507 lines
19 KiB
Text
507 lines
19 KiB
Text
OpenPAM Ximenia 2023-06-27
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- BUGFIX: Fix race condition in openpam_ttyconv(3) when used with
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expect scripts.
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- BUGFIX: In openpam_set_option(3), when removing an option, properly
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decrement the option count.
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- BUGFIX: In openpam_subst(3), avoid incrementing past the end of the
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template.
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============================================================================
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OpenPAM Tabebuia 2019-02-24
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- BUGFIX: Fix off-by-one bug in pam_getenv(3) which was introduced in
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OpenPAM Radula.
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- ENHANCE: Add unit tests for pam_{get,put,set}env(3).
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============================================================================
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OpenPAM Resedacea 2017-04-30
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- BUGFIX: Reinstore the NULL check in pam_end(3) which was removed in
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OpenPAM Radula, as it breaks common error-handling constructs.
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- BUGFIX: Return PAM_SYMBOL_ERR instead of PAM_SYSTEM_ERR from the
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dispatcher when the required service function could not be found.
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- ENHANCE: Introduce the PAM_BAD_HANDLE error code for when pamh is
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NULL in API functions that have a NULL check.
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- ENHANCE: Introduce the PAM_BAD_ITEM, PAM_BAD_FEATURE and
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PAM_BAD_CONSTANT error codes for situations where we previously
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incorrectly used PAM_SYMBOL_ERR to denote that an invalid constant
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had been passed to an API function.
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- ENHANCE: Improve the RETURN VALUES section in API man pages,
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especially for functions that cannot fail, which were incorrectly
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documented as returning -1 on failure.
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============================================================================
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OpenPAM Radula 2017-02-19
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- BUGFIX: Fix an inverted test which prevented pam_get_authtok(3) and
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pam_get_user(3) from using application-provided custom prompts.
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- BUGFIX: Plug a memory leak in pam_set_item(3).
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- BUGFIX: Plug a potential memory leak in openpam_readlinev(3).
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- BUGFIX: In openpam_readword(3), support line continuations within
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whitespace.
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- ENHANCE: Add a feature flag to control fallback to "other" policy.
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- ENHANCE: Add a pam_return(8) module which returns an arbitrary
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code specified in the module options.
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- ENHANCE: More and better unit tests.
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============================================================================
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OpenPAM Ourouparia 2014-09-12
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- ENHANCE: When executing a chain, require at least one service
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function to succeed. This mitigates fail-open scenarios caused by
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misconfigurations or missing modules.
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- ENHANCE: Make sure to overwrite buffers which may have contained an
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authentication token when they're no longer needed.
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- BUGFIX: Under certain circumstances, specifying a non-existent
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module (or misspelling the name of a module) in a policy could
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result in a fail-open scenario. (CVE-2014-3879)
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- FEATURE: Add a search path for modules. This was implemented in
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Nummularia but inadvertently left out of the release notes.
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- BUGFIX: The is_upper() predicate only accepted the letter A as an
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upper-case character instead of the entire A-Z range. As a result,
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service and module names containing upper-case letters other than A
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would be rejected.
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============================================================================
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OpenPAM Nummularia 2013-09-07
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- ENHANCE: Rewrite the dynamic loader to improve readability and
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reliability. Modules can now be listed without the ".so" suffix in
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the policy file; OpenPAM will automatically add it, just like it
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will automatically add the version number if required.
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- ENHANCE: Allow openpam_straddch(3) to be called without a character
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so it can be used to preallocate a string.
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- ENHANCE: Improve portability by adding simple asprintf(3) and
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vasprintf(3) implementations for platforms that don't have them.
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- ENHANCE: Move the libpam sources into a separate subdirectory.
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- ENHANCE: Substantial documentation improvements.
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- BUGFIX: When openpam_readword(3) encountered an opening quote, it
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would set the first byte in the buffer to '\0', discarding all
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existing text and, unless the buffer was empty to begin with, all
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subsequent text as well. This went unnoticed because none of the
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unit tests for quoted strings had any text preceding the opening
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quote.
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- BUGFIX: make --with-modules-dir work the way it was meant to work
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(but never did).
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============================================================================
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OpenPAM Micrampelis 2012-05-26
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- FEATURE: Add an openpam_readword(3) function which reads the next
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word from an input stream, applying shell quoting and escaping
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rules. Add numerous unit tests for openpam_readword(3).
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- FEATURE: Add an openpam_readlinev(3) function which uses the
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openpam_readword(3) function to read words from an input stream one
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at a time until it reaches an unquoted, unescaped newline, and
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returns an array of those words. Add several unit tests for
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openpam_readlinev(3).
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- FEATURE: Add a PAM_HOST item which pam_start(3) initializes to the
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machine's hostname. This was implemented in Lycopsida but
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inadvertantly left out of the release notes.
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- FEATURE: In pam_get_authtok(3), if neither the application nor the
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module have specified a prompt and PAM_HOST and PAM_RHOST are both
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defined but not equal, use a different default prompt that includes
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PAM_USER and PAM_HOST.
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- ENHANCE: Rewrite the policy parser to used openpam_readlinev(),
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which greatly simplifies the code.
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- ENHANCE: The previous implementation of the policy parser relied on
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the openpam_readline(3) function, which (by design) munges
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whitespace and understands neither quotes nor backslash escapes.
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As a result of the aforementioned rewrite, whitespace, quotes and
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backslash escapes in policy files are now handled in a consistent
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and predictable manner.
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- ENHANCE: On platforms that have it, use fdlopen(3) to load modules.
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This closes the race between the ownership / permission check and
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the dlopen(3) call.
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- ENHANCE: Reduce the amount of pointless error messages generated
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while searching for a module.
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- ENHANCE: Numerous documentation improvements, both in content and
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formatting.
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- BUGFIX: A patch incorporated in Lycopsida inadvertantly changed
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OpenPAM's behavior when several policies exist for the same
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service, from ignoring all but the first to concatenating them all.
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Revert to the original behavior.
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- BUGFIX: Plug a memory leak in the policy parser.
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============================================================================
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OpenPAM Lycopsida 2011-12-18
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- ENHANCE: removed static build autodetection, which didn't work
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anyway. Use an explicit, user-specified preprocessor variable
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instead.
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- ENHANCE: cleaned up the documentation a bit.
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- ENHANCE: added openpam_subst(3), allowing certain PAM items to be
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embedded in strings such as prompts. Apply it to the prompts used
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by pam_get_user(3) and pam_get_authtok(3).
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- ENHANCE: added support for the user_prompt, authtok_prompt and
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oldauthtok_prompt module options, which override the prompts passed
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by the module to pam_set_user(3) and pam_get_authtok(3).
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- ENHANCE: rewrote the policy parser to support quoted option values.
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- ENHANCE: added pamtest(1), a tool for testing modules and policies.
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- ENHANCE: added code to check the ownership and permissions of a
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module before loading it.
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- ENHANCE: added / improved input validation in many cases, including
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the policy file and some function arguments. (CVE-2011-4122)
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============================================================================
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OpenPAM Hydrangea 2007-12-21
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- ENHANCE: when compiling with GCC, mark up API functions with GCC
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attributes where appropriate.
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- BUGFIX: fixed numerous warnings uncovered by GCC 4.
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- ENHANCE: building the documentation is now optional.
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- ENHANCE: corrected a number of mistakes and style issues in the
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build system.
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- ENHANCE: API function arguments are now const where appropriate, to
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match corresponding changes in the Solaris PAM and Linux-PAM APIs.
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- ENHANCE: corrected a number of C namespace violations.
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- ENHANCE: the module cache has been removed, allowing long-lived
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applications to pick up module changes. This also allows multiple
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threads to use PAM simultaneously (as long as they use separate PAM
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contexts), since the module cache was the only part of OpenPAM that
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was not thread-safe.
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============================================================================
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OpenPAM Figwort 2005-06-16
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- BUGFIX: Correct several small signedness and initialization bugs
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discovered during review by the NetBSD team.
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- BUGFIX: Modify gendoc.pl to sort cross-references in dictionary
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order within each section.
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- ENHANCE: if a policy specifies a relative module path, prepend the
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module directory so we never call dlopen(3) with a relative path.
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- ENHANCE: add a pam.conf(5) manual page.
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============================================================================
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OpenPAM Feterita 2005-02-01
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- BUGFIX: Correct numerous markup errors, invalid cross-references,
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and other issues in the manual pages, with kind assistance from
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Ruslan Ermilov <ru@freebsd.org>.
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- BUGFIX: Avoid multiple evaluation of macro arguments in ENTERX()
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and RETURNX() macros.
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- BUGFIX: Remove an unnecessary and non-portable pointer cast in
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pam_get_data(3).
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- BUGFIX: Fix identical typos in PAM_ACCT_EXPIRED case in
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pam_strerror(3) and gendoc.pl.
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- ENHANCE: Minor overhaul of the autoconf / build system.
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- ENHANCE: Add openpam_free_envlist(3).
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============================================================================
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OpenPAM Eelgrass 2004-02-10
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- BUGFIX: Correct array handling bugs in conversation code.
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- BUGFIX: In openpam_ttyconv(3), don't strip trailing linear
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whitespace from the user's response.
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- BUGFIX: Many constness issues addressed.
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============================================================================
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OpenPAM Dogwood 2003-07-15
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- ENHANCE: Use the GNU autotools.
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- ENHANCE: Constify the msg field in struct pam_message.
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- BUGFIX: Remove left-over debugging output
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- BUGFIX: Avoid side effects in arguments to the FREE() macro
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- ENHANCE: Make openpam_ttyconv(3) use read(2) rather than fgets(3).
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- BUGFIX: Staticize some variables which shouldn't be global.
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- BUGFIX: Correcly anticipate a NULL user in pam_get_user(3).
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- ENHANCE: Various minor documentation improvements.
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Thanks to Dmitry V. Levin <ldv@altlinux.org> for considerable
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assistance with this release.
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============================================================================
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OpenPAM Digitalis 2003-06-01
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- ENHANCE: Completely rewrite the configuration parser and add
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support for the "include" control flag.
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- ENHANCE: Improve portability to NetBSD, OpenBSD and Linux.
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- ENHANCE: Lots of additional paranoia.
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- BUGFIX: The sample su(1) application dropped privileges before
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forking instead of after.
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- ENHANCE: Document openpam_log(3).
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- ENHANCE: Other minor documentation fixes.
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Thanks to Dmitry V. Levin <ldv@altlinux.org> for considerable
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assistance with this release.
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============================================================================
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OpenPAM Dianthus 2003-05-02
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- BUGFIX: Initialize some potentially uninitialized variables.
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- BUGFIX: Silence some warnings emitted by gcc -std=iso9899:1999.
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- BUGFIX: In pam_getenv(), return a pointer to the stored variable
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instead of a freshly allocated copy.
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- ENHANCE: Detect recursion in openpam_borrow_cred()
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- ENHANCE: Make borrowing one's own credentials a no-op.
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- ENHANCE: Further improve debugging support.
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- ENHANCE: Clean up some variable names.
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============================================================================
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OpenPAM Daffodil 2003-01-06
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- ENHANCE: Document dependency on <sys/types.h> (for size_t)
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- ENHANCE: Slightly improve error detection in openpam_ttyconv().
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- BUGFIX: Fix several typos in debugging macros.
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============================================================================
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OpenPAM Cyclamen 2002-12-12
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- ENHANCE: Improve recursion detection in openpam_dispatch().
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- ENHANCE: Add debugging messages at entry and exit points of most
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functions.
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- ENHANCE: Fix some minor style issues.
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- BUGFIX: Add default cases to the switches in openpam_log.c.
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- ENHANCE: Add /usr/local/etc/pam.conf to policy search path.
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- BUGFIX: In openpam_ttyconv(3), print the prompt to stdout rather
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than stderr.
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============================================================================
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OpenPAM Citronella 2002-06-30
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- ENHANCE: Add the "binding" control flag (from Solaris 9).
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- ENHANCE: Define struct pam_repository and PAM_REPOSITORY (from
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Solaris 9).
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- ENHANCE: Flesh out the pam(3) man page.
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- ENHANCE: Add an openpam(3) page with cross-references to all the
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documented OpenPAM API extensions.
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- ENHANCE: Add a pam_conv(3) man page describing the conversation
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system.
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- ENHANCE: Improved sample application.
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- ENHANCE: Added sample pam_unix module.
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- BUGFIX: Various documentation nits.
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============================================================================
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OpenPAM Cinquefoil 2002-05-24
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- BUGFIX: Various warnings uncovered by gcc 3.1.
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- ENHANCE: Add a null conversation function, openpam_nullconv(3).
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- BUGFIX: Initialize the "other" chain to all zeroes.
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- ENHANCE: Document openpam_ttyconv(3).
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============================================================================
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OpenPAM Cinnamon 2002-05-02
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- ENHANCE: Add a null conversation function, openpam_nullconv().
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- BUGFIX: Various markup bugs in the documentation.
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- BUGFIX: Document <security/openpam.h>.
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- BUGFIX: Duplicate expansion of openpam_log() macro arguments.
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- ENHANCE: Restructure the policy-loading code and align our use of
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the "other" policy with Solaris and Linux-PAM.
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- ENHANCE: Log dlopen() and dlsym() failures.
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- ENHANCE: In openpam_ttyconv(), emit a newline after error and info
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messages unless the message contains one already.
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- BUGFIX: In pam_vprompt(), initialize the response pointer to NULL
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so we can detect whether the conversation function touched it.
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============================================================================
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OpenPAM Cineraria 2002-04-14
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- BUGFIX: Fix confusion between token and prompt in
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pam_get_authtok(3).
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- ENHANCE: Improved documentation.
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- ENHANCE: Adopt the same preprocessor tricks that were used in
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FreeBSD's version of Linux-PAM to simplify static linking without
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requiring dummy primitives.
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- ENHANCE: Move the policy-loading code out of pam_start.c.
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- BUGFIX: Fix typo in one of the versions of the openpam_log macro.
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- ENHANCE: Add versioning macros.
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============================================================================
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OpenPAM Cinchona 2002-04-08
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- ENHANCE: Improved documentation for several API functions.
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- BUGFIX: Fix bug in pam_set_data() that would result in corruption
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of the module data list.
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- BUGFIX: Allocate the correct amount of memory for the environment
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list in pam_putenv().
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- ENHANCE: Change pam_get_authtok()'s prototype so the caller can
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specify what token it wants. Also introduce PAM_OLDAUTHTOK_PROMPT.
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- BUGFIX: Plug memory leak in pam_get_user() / pam_get_authtok(), and
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reduce differences between these very similar functions.
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- ENHANCE: Check flags carefully in pam_authenticate() and
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pam_chauthtok().
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- BUGFIX: Fix bugs in portability code; libpam now builds on NetBSD.
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- ENHANCE: In pam_get_authtok(), if PAM_OLDAUTHTOK is set, we're
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asked for PAM_AUTHTOK, and we have to prompt the user, prompt her
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twice and compare the responses.
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- ENHANCE: Add openpam_{borrow,restore}_cred(), for temporarily
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switching to user credentials.
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- ENHANCE: Add openpam_free_data(), a generic cleanup function for
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pam_set_data() consumers.
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============================================================================
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OpenPAM Centaury 2002-03-14
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- BUGFIX: Add missing #include <string.h> to openpam_log.c.
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- BUGFIX: s/PAM_REINITIALISE_CRED/PAM_REINITIALIZE_CRED/. XSSO uses
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the former, but Solaris and Linux-PAM use the latter.
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- BUGFIX: The dynamic loader and the module cache contained a number
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of bugs which would cause a segmentation fault if pam_start(3) was
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called again after pam_end(3), as happens in login(1), xdm(1) etc.
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after a failed login.
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- BUGFIX: Refer to a module by the name used in the policy file, even
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if the module that was actually loaded was versioned.
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- ENHANCE: Suppress debugging logs, unless compiled with -DDEBUG.
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============================================================================
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OpenPAM Celandine 2002-03-05
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- BUGFIX: PAM_TRY_AGAIN is a valid return value for pam_chauthtok().
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- BUGFIX: Run passwd chain twice, first with the PAM_PRELIM_CHECK
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flag set, then with the PAM_UPDATE_AUTHTOK flag set.
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- BUGFIX: Failure of a "sufficient" module should not terminate the
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passwd chain if the PAM_PRELIM_CHECK flag is set.
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- BUGFIX: Clear PAM_AUTHTOK after running the service modules.
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- ENHANCE: Prevent applications from specifying the PAM_PRELIM_CHECK
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or PAM_UPDATE_AUTHTOK flags themselves.
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- BUGFIX: openpam_set_option() did not support changing the value of
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an existing option.
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- ENHANCE: Add support for module versioning. OpenPAM will prefer a
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module with the same version number as the library itself to one
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with no version number at all.
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============================================================================
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OpenPAM Cantaloupe 2002-02-22
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- BUGFIX: The proper use of PAM_SYMBOL_ERR is to indicate an invalid
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argument to pam_[gs]et_item(3), not to indicate dlsym(3) failures.
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- ENHANCE: Add in-line documentation in most source files, and a Perl
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script that generates mdoc code from that.
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- BUGFIX: The environment list was not properly NULL-terminated.
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- ENHANCE: Allow the PAM_AUTHTOK_PROMPT item to override the prompt
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specified by the module.
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- BUGFIX: PAM_NUM_ITEMS was set too low. It has been moved to
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pam_constants.h to avoid it going stale again.
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- ENHANCE: Move all code related to static modules into a separate
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file.
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- ENHANCE: openpam_ttyconv() now masks most signals while prompting the
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user, and supports setting a timeout (which defaults to off).
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- BUGFIX: Some manual pages referenced XSSO even though they
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documented OpenPAM-specific functions.
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- ENHANCE: Added openpam_get_option() and openpam_set_option().
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- ENHANCE: openpam_get_authtok() now respects the echo_pass,
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try_first_pass, and use_first_pass options.
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============================================================================
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OpenPAM Caliopsis 2002-02-13
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Fixed a number of bugs in the previous release, including:
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- a number of bugs in and related to pam_[gs]et_item(3)
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- off-by-one bug in pam_start.c would trim last character off certain
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configuration lines
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- incorrect ordering of an array in openpam_load.c would cause service
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module functions to get mixed up
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- missing 'continue' in openpam_dispatch.c caused successes to be
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counted as failures
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============================================================================
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OpenPAM Calamite 2002-02-09
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First (beta) release.
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