1 OpenPAM Tabebuia 2019-02-24
3 - BUGFIX: Fix off-by-one bug in pam_getenv(3) which was introduced in
6 - ENHANCE: Add unit tests for pam_{get,put,set}env(3).
7 ============================================================================
8 OpenPAM Resedacea 2017-04-30
10 - BUGFIX: Reinstore the NULL check in pam_end(3) which was removed in
11 OpenPAM Radula, as it breaks common error-handling constructs.
13 - BUGFIX: Return PAM_SYMBOL_ERR instead of PAM_SYSTEM_ERR from the
14 dispatcher when the required service function could not be found.
16 - ENHANCE: Introduce the PAM_BAD_HANDLE error code for when pamh is
17 NULL in API functions that have a NULL check.
19 - ENHANCE: Introduce the PAM_BAD_ITEM, PAM_BAD_FEATURE and
20 PAM_BAD_CONSTANT error codes for situations where we previously
21 incorrectly used PAM_SYMBOL_ERR to denote that an invalid constant
22 had been passed to an API function.
24 - ENHANCE: Improve the RETURN VALUES section in API man pages,
25 especially for functions that cannot fail, which were incorrectly
26 documented as returning -1 on failure.
27 ============================================================================
28 OpenPAM Radula 2017-02-19
30 - BUGFIX: Fix an inverted test which prevented pam_get_authtok(3) and
31 pam_get_user(3) from using application-provided custom prompts.
33 - BUGFIX: Plug a memory leak in pam_set_item(3).
35 - BUGFIX: Plug a potential memory leak in openpam_readlinev(3).
37 - BUGFIX: In openpam_readword(3), support line continuations within
40 - ENHANCE: Add a feature flag to control fallback to "other" policy.
42 - ENHANCE: Add a pam_return(8) module which returns an arbitrary
43 code specified in the module options.
45 - ENHANCE: More and better unit tests.
46 ============================================================================
47 OpenPAM Ourouparia 2014-09-12
49 - ENHANCE: When executing a chain, require at least one service
50 function to succeed. This mitigates fail-open scenarios caused by
51 misconfigurations or missing modules.
53 - ENHANCE: Make sure to overwrite buffers which may have contained an
54 authentication token when they're no longer needed.
56 - BUGFIX: Under certain circumstances, specifying a non-existent
57 module (or misspelling the name of a module) in a policy could
58 result in a fail-open scenario. (CVE-2014-3879)
60 - FEATURE: Add a search path for modules. This was implemented in
61 Nummularia but inadvertently left out of the release notes.
63 - BUGFIX: The is_upper() predicate only accepted the letter A as an
64 upper-case character instead of the entire A-Z range. As a result,
65 service and module names containing upper-case letters other than A
67 ============================================================================
68 OpenPAM Nummularia 2013-09-07
70 - ENHANCE: Rewrite the dynamic loader to improve readability and
71 reliability. Modules can now be listed without the ".so" suffix in
72 the policy file; OpenPAM will automatically add it, just like it
73 will automatically add the version number if required.
75 - ENHANCE: Allow openpam_straddch(3) to be called without a character
76 so it can be used to preallocate a string.
78 - ENHANCE: Improve portability by adding simple asprintf(3) and
79 vasprintf(3) implementations for platforms that don't have them.
81 - ENHANCE: Move the libpam sources into a separate subdirectory.
83 - ENHANCE: Substantial documentation improvements.
85 - BUGFIX: When openpam_readword(3) encountered an opening quote, it
86 would set the first byte in the buffer to '\0', discarding all
87 existing text and, unless the buffer was empty to begin with, all
88 subsequent text as well. This went unnoticed because none of the
89 unit tests for quoted strings had any text preceding the opening
92 - BUGFIX: make --with-modules-dir work the way it was meant to work
94 ============================================================================
95 OpenPAM Micrampelis 2012-05-26
97 - FEATURE: Add an openpam_readword(3) function which reads the next
98 word from an input stream, applying shell quoting and escaping
99 rules. Add numerous unit tests for openpam_readword(3).
101 - FEATURE: Add an openpam_readlinev(3) function which uses the
102 openpam_readword(3) function to read words from an input stream one
103 at a time until it reaches an unquoted, unescaped newline, and
104 returns an array of those words. Add several unit tests for
105 openpam_readlinev(3).
107 - FEATURE: Add a PAM_HOST item which pam_start(3) initializes to the
108 machine's hostname. This was implemented in Lycopsida but
109 inadvertantly left out of the release notes.
111 - FEATURE: In pam_get_authtok(3), if neither the application nor the
112 module have specified a prompt and PAM_HOST and PAM_RHOST are both
113 defined but not equal, use a different default prompt that includes
114 PAM_USER and PAM_HOST.
116 - ENHANCE: Rewrite the policy parser to used openpam_readlinev(),
117 which greatly simplifies the code.
119 - ENHANCE: The previous implementation of the policy parser relied on
120 the openpam_readline(3) function, which (by design) munges
121 whitespace and understands neither quotes nor backslash escapes.
122 As a result of the aforementioned rewrite, whitespace, quotes and
123 backslash escapes in policy files are now handled in a consistent
124 and predictable manner.
126 - ENHANCE: On platforms that have it, use fdlopen(3) to load modules.
127 This closes the race between the ownership / permission check and
130 - ENHANCE: Reduce the amount of pointless error messages generated
131 while searching for a module.
133 - ENHANCE: Numerous documentation improvements, both in content and
136 - BUGFIX: A patch incorporated in Lycopsida inadvertantly changed
137 OpenPAM's behavior when several policies exist for the same
138 service, from ignoring all but the first to concatenating them all.
139 Revert to the original behavior.
141 - BUGFIX: Plug a memory leak in the policy parser.
142 ============================================================================
143 OpenPAM Lycopsida 2011-12-18
145 - ENHANCE: removed static build autodetection, which didn't work
146 anyway. Use an explicit, user-specified preprocessor variable
149 - ENHANCE: cleaned up the documentation a bit.
151 - ENHANCE: added openpam_subst(3), allowing certain PAM items to be
152 embedded in strings such as prompts. Apply it to the prompts used
153 by pam_get_user(3) and pam_get_authtok(3).
155 - ENHANCE: added support for the user_prompt, authtok_prompt and
156 oldauthtok_prompt module options, which override the prompts passed
157 by the module to pam_set_user(3) and pam_get_authtok(3).
159 - ENHANCE: rewrote the policy parser to support quoted option values.
161 - ENHANCE: added pamtest(1), a tool for testing modules and policies.
163 - ENHANCE: added code to check the ownership and permissions of a
164 module before loading it.
166 - ENHANCE: added / improved input validation in many cases, including
167 the policy file and some function arguments. (CVE-2011-4122)
168 ============================================================================
169 OpenPAM Hydrangea 2007-12-21
171 - ENHANCE: when compiling with GCC, mark up API functions with GCC
172 attributes where appropriate.
174 - BUGFIX: fixed numerous warnings uncovered by GCC 4.
176 - ENHANCE: building the documentation is now optional.
178 - ENHANCE: corrected a number of mistakes and style issues in the
181 - ENHANCE: API function arguments are now const where appropriate, to
182 match corresponding changes in the Solaris PAM and Linux-PAM APIs.
184 - ENHANCE: corrected a number of C namespace violations.
186 - ENHANCE: the module cache has been removed, allowing long-lived
187 applications to pick up module changes. This also allows multiple
188 threads to use PAM simultaneously (as long as they use separate PAM
189 contexts), since the module cache was the only part of OpenPAM that
191 ============================================================================
192 OpenPAM Figwort 2005-06-16
194 - BUGFIX: Correct several small signedness and initialization bugs
195 discovered during review by the NetBSD team.
197 - BUGFIX: Modify gendoc.pl to sort cross-references in dictionary
198 order within each section.
200 - ENHANCE: if a policy specifies a relative module path, prepend the
201 module directory so we never call dlopen(3) with a relative path.
203 - ENHANCE: add a pam.conf(5) manual page.
204 ============================================================================
205 OpenPAM Feterita 2005-02-01
207 - BUGFIX: Correct numerous markup errors, invalid cross-references,
208 and other issues in the manual pages, with kind assistance from
209 Ruslan Ermilov <ru@freebsd.org>.
211 - BUGFIX: Avoid multiple evaluation of macro arguments in ENTERX()
212 and RETURNX() macros.
214 - BUGFIX: Remove an unnecessary and non-portable pointer cast in
217 - BUGFIX: Fix identical typos in PAM_ACCT_EXPIRED case in
218 pam_strerror(3) and gendoc.pl.
220 - ENHANCE: Minor overhaul of the autoconf / build system.
222 - ENHANCE: Add openpam_free_envlist(3).
223 ============================================================================
224 OpenPAM Eelgrass 2004-02-10
226 - BUGFIX: Correct array handling bugs in conversation code.
228 - BUGFIX: In openpam_ttyconv(3), don't strip trailing linear
229 whitespace from the user's response.
231 - BUGFIX: Many constness issues addressed.
232 ============================================================================
233 OpenPAM Dogwood 2003-07-15
235 - ENHANCE: Use the GNU autotools.
237 - ENHANCE: Constify the msg field in struct pam_message.
239 - BUGFIX: Remove left-over debugging output
241 - BUGFIX: Avoid side effects in arguments to the FREE() macro
243 - ENHANCE: Make openpam_ttyconv(3) use read(2) rather than fgets(3).
245 - BUGFIX: Staticize some variables which shouldn't be global.
247 - BUGFIX: Correcly anticipate a NULL user in pam_get_user(3).
249 - ENHANCE: Various minor documentation improvements.
251 Thanks to Dmitry V. Levin <ldv@altlinux.org> for considerable
252 assistance with this release.
253 ============================================================================
254 OpenPAM Digitalis 2003-06-01
256 - ENHANCE: Completely rewrite the configuration parser and add
257 support for the "include" control flag.
259 - ENHANCE: Improve portability to NetBSD, OpenBSD and Linux.
261 - ENHANCE: Lots of additional paranoia.
263 - BUGFIX: The sample su(1) application dropped privileges before
264 forking instead of after.
266 - ENHANCE: Document openpam_log(3).
268 - ENHANCE: Other minor documentation fixes.
270 Thanks to Dmitry V. Levin <ldv@altlinux.org> for considerable
271 assistance with this release.
272 ============================================================================
273 OpenPAM Dianthus 2003-05-02
275 - BUGFIX: Initialize some potentially uninitialized variables.
277 - BUGFIX: Silence some warnings emitted by gcc -std=iso9899:1999.
279 - BUGFIX: In pam_getenv(), return a pointer to the stored variable
280 instead of a freshly allocated copy.
282 - ENHANCE: Detect recursion in openpam_borrow_cred()
284 - ENHANCE: Make borrowing one's own credentials a no-op.
286 - ENHANCE: Further improve debugging support.
288 - ENHANCE: Clean up some variable names.
289 ============================================================================
290 OpenPAM Daffodil 2003-01-06
292 - ENHANCE: Document dependency on <sys/types.h> (for size_t)
294 - ENHANCE: Slightly improve error detection in openpam_ttyconv().
296 - BUGFIX: Fix several typos in debugging macros.
297 ============================================================================
298 OpenPAM Cyclamen 2002-12-12
300 - ENHANCE: Improve recursion detection in openpam_dispatch().
302 - ENHANCE: Add debugging messages at entry and exit points of most
305 - ENHANCE: Fix some minor style issues.
307 - BUGFIX: Add default cases to the switches in openpam_log.c.
309 - ENHANCE: Add /usr/local/etc/pam.conf to policy search path.
311 - BUGFIX: In openpam_ttyconv(3), print the prompt to stdout rather
313 ============================================================================
314 OpenPAM Citronella 2002-06-30
316 - ENHANCE: Add the "binding" control flag (from Solaris 9).
318 - ENHANCE: Define struct pam_repository and PAM_REPOSITORY (from
321 - ENHANCE: Flesh out the pam(3) man page.
323 - ENHANCE: Add an openpam(3) page with cross-references to all the
324 documented OpenPAM API extensions.
326 - ENHANCE: Add a pam_conv(3) man page describing the conversation
329 - ENHANCE: Improved sample application.
331 - ENHANCE: Added sample pam_unix module.
333 - BUGFIX: Various documentation nits.
334 ============================================================================
335 OpenPAM Cinquefoil 2002-05-24
337 - BUGFIX: Various warnings uncovered by gcc 3.1.
339 - ENHANCE: Add a null conversation function, openpam_nullconv(3).
341 - BUGFIX: Initialize the "other" chain to all zeroes.
343 - ENHANCE: Document openpam_ttyconv(3).
344 ============================================================================
345 OpenPAM Cinnamon 2002-05-02
347 - ENHANCE: Add a null conversation function, openpam_nullconv().
349 - BUGFIX: Various markup bugs in the documentation.
351 - BUGFIX: Document <security/openpam.h>.
353 - BUGFIX: Duplicate expansion of openpam_log() macro arguments.
355 - ENHANCE: Restructure the policy-loading code and align our use of
356 the "other" policy with Solaris and Linux-PAM.
358 - ENHANCE: Log dlopen() and dlsym() failures.
360 - ENHANCE: In openpam_ttyconv(), emit a newline after error and info
361 messages unless the message contains one already.
363 - BUGFIX: In pam_vprompt(), initialize the response pointer to NULL
364 so we can detect whether the conversation function touched it.
365 ============================================================================
366 OpenPAM Cineraria 2002-04-14
368 - BUGFIX: Fix confusion between token and prompt in
371 - ENHANCE: Improved documentation.
373 - ENHANCE: Adopt the same preprocessor tricks that were used in
374 FreeBSD's version of Linux-PAM to simplify static linking without
375 requiring dummy primitives.
377 - ENHANCE: Move the policy-loading code out of pam_start.c.
379 - BUGFIX: Fix typo in one of the versions of the openpam_log macro.
381 - ENHANCE: Add versioning macros.
382 ============================================================================
383 OpenPAM Cinchona 2002-04-08
385 - ENHANCE: Improved documentation for several API functions.
387 - BUGFIX: Fix bug in pam_set_data() that would result in corruption
388 of the module data list.
390 - BUGFIX: Allocate the correct amount of memory for the environment
391 list in pam_putenv().
393 - ENHANCE: Change pam_get_authtok()'s prototype so the caller can
394 specify what token it wants. Also introduce PAM_OLDAUTHTOK_PROMPT.
396 - BUGFIX: Plug memory leak in pam_get_user() / pam_get_authtok(), and
397 reduce differences between these very similar functions.
399 - ENHANCE: Check flags carefully in pam_authenticate() and
402 - BUGFIX: Fix bugs in portability code; libpam now builds on NetBSD.
404 - ENHANCE: In pam_get_authtok(), if PAM_OLDAUTHTOK is set, we're
405 asked for PAM_AUTHTOK, and we have to prompt the user, prompt her
406 twice and compare the responses.
408 - ENHANCE: Add openpam_{borrow,restore}_cred(), for temporarily
409 switching to user credentials.
411 - ENHANCE: Add openpam_free_data(), a generic cleanup function for
412 pam_set_data() consumers.
413 ============================================================================
414 OpenPAM Centaury 2002-03-14
416 - BUGFIX: Add missing #include <string.h> to openpam_log.c.
418 - BUGFIX: s/PAM_REINITIALISE_CRED/PAM_REINITIALIZE_CRED/. XSSO uses
419 the former, but Solaris and Linux-PAM use the latter.
421 - BUGFIX: The dynamic loader and the module cache contained a number
422 of bugs which would cause a segmentation fault if pam_start(3) was
423 called again after pam_end(3), as happens in login(1), xdm(1) etc.
424 after a failed login.
426 - BUGFIX: Refer to a module by the name used in the policy file, even
427 if the module that was actually loaded was versioned.
429 - ENHANCE: Suppress debugging logs, unless compiled with -DDEBUG.
430 ============================================================================
431 OpenPAM Celandine 2002-03-05
433 - BUGFIX: PAM_TRY_AGAIN is a valid return value for pam_chauthtok().
435 - BUGFIX: Run passwd chain twice, first with the PAM_PRELIM_CHECK
436 flag set, then with the PAM_UPDATE_AUTHTOK flag set.
438 - BUGFIX: Failure of a "sufficient" module should not terminate the
439 passwd chain if the PAM_PRELIM_CHECK flag is set.
441 - BUGFIX: Clear PAM_AUTHTOK after running the service modules.
443 - ENHANCE: Prevent applications from specifying the PAM_PRELIM_CHECK
444 or PAM_UPDATE_AUTHTOK flags themselves.
446 - BUGFIX: openpam_set_option() did not support changing the value of
449 - ENHANCE: Add support for module versioning. OpenPAM will prefer a
450 module with the same version number as the library itself to one
451 with no version number at all.
452 ============================================================================
453 OpenPAM Cantaloupe 2002-02-22
455 - BUGFIX: The proper use of PAM_SYMBOL_ERR is to indicate an invalid
456 argument to pam_[gs]et_item(3), not to indicate dlsym(3) failures.
458 - ENHANCE: Add in-line documentation in most source files, and a Perl
459 script that generates mdoc code from that.
461 - BUGFIX: The environment list was not properly NULL-terminated.
463 - ENHANCE: Allow the PAM_AUTHTOK_PROMPT item to override the prompt
464 specified by the module.
466 - BUGFIX: PAM_NUM_ITEMS was set too low. It has been moved to
467 pam_constants.h to avoid it going stale again.
469 - ENHANCE: Move all code related to static modules into a separate
472 - ENHANCE: openpam_ttyconv() now masks most signals while prompting the
473 user, and supports setting a timeout (which defaults to off).
475 - BUGFIX: Some manual pages referenced XSSO even though they
476 documented OpenPAM-specific functions.
478 - ENHANCE: Added openpam_get_option() and openpam_set_option().
480 - ENHANCE: openpam_get_authtok() now respects the echo_pass,
481 try_first_pass, and use_first_pass options.
482 ============================================================================
483 OpenPAM Caliopsis 2002-02-13
485 Fixed a number of bugs in the previous release, including:
486 - a number of bugs in and related to pam_[gs]et_item(3)
487 - off-by-one bug in pam_start.c would trim last character off certain
489 - incorrect ordering of an array in openpam_load.c would cause service
490 module functions to get mixed up
491 - missing 'continue' in openpam_dispatch.c caused successes to be
493 ============================================================================
494 OpenPAM Calamite 2002-02-09
496 First (beta) release.