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* Fix most of clang -Wcast-align compilation warningsDmitry V. Levin2020-03-192-3/+8
| | | | | | | | | | | | | | | | | | | Unlike gcc, clang is not smart enough to infer the alignment of structure fields, so add some alignment hints to the code. * libpam/include/pam_cc_compat.h (PAM_ATTRIBUTE_ALIGNED): New macro. * modules/pam_namespace/md5.h: Include "pam_cc_compat.h". (struct MD5Context): Add PAM_ATTRIBUTE_ALIGNED to "in" field. * modules/pam_namespace/md5.c [!(__i386__ || __x86_64__)] (uint8_aligned): New type. [!(__i386__ || __x86_64__)] (byteReverse): Use it instead of unsigned char. * modules/pam_timestamp/sha1.h: Include "pam_cc_compat.h". (struct sha1_context): Add PAM_ATTRIBUTE_ALIGNED to pending field. * modules/pam_unix/md5.h: Include "pam_cc_compat.h". (struct MD5Context): Add PAM_ATTRIBUTE_ALIGNED to "in" field. * modules/pam_unix/md5.c [!HIGHFIRST] (uint8_aligned): New type. [!HIGHFIRST] (byteReverse): Use it instead of unsigned char.
* modules/pam_unix: fix gcc compilation warningsDmitry V. Levin2020-03-191-14/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When setreuid() fails, there is no way to proceed any further: either the process credentials are unchanged but inappropriate, or they are in an inconsistent state and nothing good could be made out of it. This fixes the following compilation warnings: modules/pam_unix/passverify.c:209:5: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:211:5: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:213:6: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:214:6: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:222:5: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:224:5: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:225:5: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:226:5: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:209:5: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:211:5: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:213:6: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:214:6: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:222:5: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:224:5: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:225:5: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] modules/pam_unix/passverify.c:226:5: warning: ignoring return value of 'setreuid', declared with attribute warn_unused_result [-Wunused-result] * modules/pam_unix/passverify.c (get_account_info) [HELPER_COMPILE]: Always check setreuid return code and return PAM_CRED_INSUFFICIENT if setreuid failed.
* pam_unix: fix --disable-nis compilation warningsDmitry V. Levin2020-03-052-2/+3
| | | | | | | | | | | | | | | | When the build is configured using --disable-nis option, gcc complains: pam_unix_passwd.c: In function '_do_setpass': pam_unix_passwd.c:398:8: warning: unused variable 'master' [-Wunused-variable] support.c: In function '_unix_getpwnam': support.c:305:21: warning: parameter 'nis' set but not used [-Wunused-but-set-parameter] * modules/pam_unix/pam_unix_passwd.c (_do_setpass): Move the definition of "master" variable to [HAVE_NIS]. * modules/pam_unix/support.c (_unix_getpwnam) [!(HAVE_YP_GET_DEFAULT_DOMAIN && HAVE_YP_BIND && HAVE_YP_MATCH && HAVE_YP_UNBIND)]: Do not assign the unused parameter but mark it as used.
* pam_unix: add nullresetok option to allow reset blank passwordsPavel Březina2020-02-184-26/+67
| | | | | | | | | | Adding nullresetok to auth phase of pam_unix module will allow users with blank password to authenticate in order to immediatelly change their password even if nullok is not set. This allows to have blank password authentication disabled but still allows administrator to create new user accounts with expired blank password that must be change on the first login.
* Remove redundant header file inclusionMIZUTA Takeshi2020-02-181-1/+0
| | | | | There are some source code including the same header file redundantly. We remove these redundant header file inclusion.
* configure.ac: add --enable-doc optionFabrice Fontaine2020-01-271-0/+2
| | | | | | | | Allow the user to disable documentation through --disable-doc (enabled by default), this is especially useful when cross-compiling for embedded targets Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
* Fix remaining -Wcast-qual compilation warningsDmitry V. Levin2020-01-204-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce a new internal header file with definitions of DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL macros, use them to temporary silence -Wcast-qual compilation warnings in various modules. * libpam/include/pam_cc_compat.h: New file. * libpam/Makefile.am (noinst_HEADERS): Add include/pam_cc_compat.h. * modules/pam_mkhomedir/pam_mkhomedir.c: Include "pam_cc_compat.h". (create_homedir): Wrap execve invocation in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_namespace/pam_namespace.c: Include "pam_cc_compat.h". (pam_sm_close_session): Wrap the cast that discards ‘const’ qualifier in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_tty_audit/pam_tty_audit.c: Include "pam_cc_compat.h". (nl_send): Wrap the cast that discards ‘const’ qualifier in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_unix/pam_unix_acct.c: Include "pam_cc_compat.h". (_unix_run_verify_binary): Wrap execve invocation in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_unix/pam_unix_passwd.c: Include "pam_cc_compat.h". (_unix_run_update_binary): Wrap execve invocation in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_unix/passverify.c: Include "pam_cc_compat.h". (unix_update_shadow): Wrap the cast that discards ‘const’ qualifier in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_unix/support.c: Include "pam_cc_compat.h". (_unix_run_helper_binary): Wrap execve invocation in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL. * modules/pam_xauth/pam_xauth.c: Include "pam_cc_compat.h". (run_coprocess): Wrap execv invocation in DIAG_PUSH_IGNORE_CAST_QUAL and DIAG_POP_IGNORE_CAST_QUAL.
* pam_unix: Return NULL instead of calling crypt_md5_wrapper().Björn Esser2020-01-172-24/+18
| | | | | | | | | | | | | | | | | If the call to the crypt(3) function failed for some reason during hashing a new login passphrase, the wrapper function for computing a hash with the md5crypt method was called internally by the pam_unix module in previous versions of linux-pam. With CVE-2012-3287 in mind, the md5crypt method is not considered to be a safe nor recommended hashing method for a new login passphrase since at least 2012. Thus pam_unix should error out in case of a failure in crypt(3) instead of silently computing a hashed passphrase using a potentially unsafe method. * modules/pam_unix/pam_unix.8.xml: Update documentation. * modules/pam_unix/passverify.c (create_password_hash): Return NULL on error instead of silently invoke crypt_md5_wrapper().
* Changed variable salt to hashHulto2020-01-151-7/+7
| | | helper_verify_password's variable salt is not just the salt but the whole hash. Renamed for clarity and conformity with the rest of the code.
* Do not use CFLAGS for warning flags set from configureTomas Mraz2019-12-181-1/+1
| | | | | | | | To be able to set CFLAGS from make command-line but not to lose the warning flags. * configure.ac: Put warning flags to WARN_CFLAGS instead of CFLAGS. * */Makefile.am: Apply WARN_CFLAGS to AM_CFLAGS.
* Fix or suppress various warnings when compiling with -Wall -WextraTomas Mraz2019-12-162-10/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * conf/pam_conv1/Makefile.am: Add -Wno-unused-function -Wno-sign-compare to CFLAGS. * doc/specs/Makefile.am: Likewise. * libpamc/include/security/pam_client.h: Explicitly compare old_p with NULL. * modules/pam_access/pam_access.c: Avoid double const. * modules/pam_filter/pam_filter.c: Avoid arbitrary constants. Avoid strncpy() without copying the NUL byte. * modules/pam_group/pam_group.c: Mark switch fallthrough with comment. * modules/pam_time/pam_time.c: Likewise. * modules/pam_limits/pam_limits.c: Remove unused units variable. * modules/pam_listfile/pam_listfile.c: Avoid unnecessary strncpy, use pointers. * modules/pam_rootok/pam_rootok.c (log_callback): Mark unused parameter. * modules/pam_selinux/pam_selinux.c: Use string_to_security_class() instead of hardcoded value. * modules/pam_sepermit/pam_sepermit.c: Properly cast when comparing. * modules/pam_succeed_if/pam_succeed_if.c: Mark unused parameters. * modules/pam_unix/pam_unix_passwd.c: Remove unused variables and properly cast for comparison. * modules/pam_unix/support.c: Remove unused function.
* Lower "bad username" log priority (#154)Sophie Herold2019-11-282-2/+2
| | | | | * modules/pam_unix/pam_unix_auth.c: Use LOG_NOTICE instead of LOG_ERR. * modules/pam_unix/pam_unix_passwd.c: Likewise. * modules/pam_umask/pam_umask.c: Likewise.
* pam_unix: Add logging useful for debugging problemsTomas Mraz2019-10-141-3/+4
| | | | | | | | | | | | | | | | Two messages added about obtaining the username are guarded by the debug option as these should not be normally logged - they can be useful for debugging but they do not indicate any special condition. The message about authenticating user with blank password is still just LOG_DEBUG priority but it is logged unconditionally because it is somewhat extraordinary condition to have an user with blank password. * modules/pam_unix/pam_unix_auth.c (pam_sm_authenticate): Replace D() macro calls which are not enabled on production builds with regular pam_syslog() calls.
* pam_unix: Fix the spelling of Jan Rękorajski's name.Tomas Mraz2019-10-107-15/+15
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* pam_unix_sess.c add uid for opening sessioned2019-09-111-12/+19
| | | | | | This adds the UID of the target user to the session open log. Also fixing tabulation in pam_unix_sess.c.
* pam_unix: Correct MAXPASS define name in the previous two commits.Tomas Mraz2019-06-272-3/+3
| | | | | * modules/pam_unix/pam_unix_passwd.c: Change MAX_PASS to MAXPASS. * modules/pam_unix/support.c: Likewise.
* Restrict password length when changing passwordFlorian Best2019-06-271-1/+5
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* Trim password at PAM_MAX_RESP_SIZE charsFlorian Best2019-06-271-0/+7
| | | | | | | Issue #118: Protect against Denial of Service attacks. To prevent hashsum generation via crypt of very long passwords the password is now stripped to 512 characters. This is equivalent behavior to unix_chkpwd.
* Move the duplicated search_key function to pam_modutil.Tomas Mraz2018-12-111-76/+2
| | | | | | | | | | | * libpam/pam_modutil_searchkey.c: New source file with pam_modutil_search_key(). * libpam/Makefile.am: Add the pam_modutil_searchkey.c. * libpam/include/security/pam_modutil.h: Add the pam_modutil_search_key() prototype. * libpam/libpam.map: Add the pam_modutil_search_key() into a new version. * modules/pam_faildelay/pam_faildelay.c: Drop search_key() and use pam_modutil_search_key(). * modules/pam_umask/pam_umask.c: Likewise. * modules/pam_unix/support.c: Likewise.
* pam_unix: Use pam_syslog instead of helper_log_err.Tomas Mraz2018-11-273-15/+17
| | | | | | | | * modules/pam_unix/passverify.c (verify_pwd_hash): Add pamh argument via PAMH_ARG_DECL. Call pam_syslog() instead of helper_log_err(). * modules/pam_unix/passverify.h: Adjust the declaration of verify_pwd_hash(). * modules/pam_unix/support.c (_unix_verify_password): Add the pamh argument to verify_pwd_hash() call.
* pam_unix: Report unusable hashes found by checksalt to syslog.Björn Esser2018-11-271-0/+36
| | | | | | | | | | | | | | | | | | | libxcrypt can be build-time configured to support (or not support) various hashing methods. Future versions will also have support for runtime configuration by the system's vendor and/or administrator. For that reason adminstrator should be notified by pam if users cannot log into their account anymore because of such a change in the system's configuration of libxcrypt. Also check for malformed hashes, like descrypt hashes starting with "$2...", which might have been generated by unsafe base64 encoding functions as used in glibc <= 2.16. Such hashes are likely to be rejected by many recent implementations of libcrypt. * modules/pam_unix/passverify.c (verify_pwd_hash): Report unusable hashes found by checksalt to syslog.
* Revert "pam_unix: Add crypt_default method, if supported."Tomas Mraz2018-11-273-41/+10
| | | | This reverts commit ad435b386b22b456724dc5c5b8d9f2d1beffc558.
* pam_unix: Add crypt_default method, if supported.Björn Esser2018-11-273-10/+41
| | | | | | | | | | | | libxcrypt since v4.4.0 supports a default method for its gensalt function on most system configurations. As the default method is to be considered the strongest available hash method, it should be preferred over all other hash methods supported by pam. * modules/pam_unix/pam_unix.8.xml: Documentation for crypt_default. * modules/pam_unix/passverify.c: Add crypt_default method. * modules/pam_unix/support.h: Likewise.
* Revert part of the commit 4da9febcTomas Mraz2018-11-261-9/+0
| | | | | | | | | pam_unix: Do not return a hard failure on invalid or disabled salt as in some cases the failure actually is not interesting and can broke things such as password-less sudo. * modules/pam_unix/passverify.c (check_shadow_expiry): Revert checking of disabled or invalid salt.
* pam_unix: Add support for (gost-)yescrypt hashing methods.Björn Esser2018-11-239-75/+128
| | | | | | | | | | | | | | | libxcrypt (v4.2 and later) has added support for the yescrypt hashing method; gost-yescrypt has been added in v4.3. * modules/pam_unix/pam_unix.8.xml: Documentation for (gost-)yescrypt. * modules/pam_unix/pam_unix_acct.c: Use 64 bit type for control flags. * modules/pam_unix/pam_unix_auth.c: Likewise. * modules/pam_unix/pam_unix_passwd.c: Likewise. * modules/pam_unix/pam_unix_sess.c: Likewise. * modules/pam_unix/passverify.c: Add support for (gost-)yescrypt. * modules/pam_unix/passverify.h: Use 64 bit type for control flags. * modules/pam_unix/support.c: Set sane rounds for (gost-)yescrypt. * modules/pam_unix/support.h: Add support for (gost-)yescrypt.
* pam_unix: Fix closing curly brace. (#77)Björn Esser2018-11-221-1/+1
| | | | | | | | This has been overlooked during review of commit dce80b3f11b3. * modules/pam_unix/support.c (_set_ctrl): Fix closing curly brace. Closes: https://github.com/linux-pam/linux-pam/issues/77
* pam_unix: Add support for crypt_checksalt, if libcrypt supports it.Björn Esser2018-11-221-0/+15
| | | | | | | | | | | | | | | libxcrypt v4.3 has added the crypt_checksalt function to whether the prefix at the begining of a given hash string refers to a supported hashing method. Future revisions of this function will add support to check whether the hashing method, the prefix refers to, was disabled or considered deprecated by the system's factory presets or system administrator. Furthermore it will be able to detect whether the parameters, which are used by the corresponding hashing method, being encoded in the hash string are not considered to be strong enough anymore. *modules/pam_unix/passverify.c: Add support for crypt_checksalt.
* pam_unix: Prefer a gensalt function, that supports auto entropy.Björn Esser2018-11-223-3/+19
| | | | | | * modules/pam_unix/pam_unix_passwd.c: Initialize rounds parameter to 0. * modules/pam_unix/passverify.c: Prefer gensalt with auto entropy. * modules/pam_unix/support.c: Fix sanitizing of rounds parameter.
* pam_unix: Use bcrypt b-variant for computing new hashes.Björn Esser2018-11-161-1/+1
| | | | | | | | | | | | | | | Bcrypt hashes used the "$2a$" prefix since 1997. However, in 2011 an implementation bug was discovered in bcrypt affecting the handling of characters in passphrases with the 8th bit set. Besides fixing the bug, OpenBSD 5.5 introduced the "$2b$" prefix for a behavior that exactly matches crypt_blowfish's "$2y$", and the crypt_blowfish implementation supports it as well since v1.1. That said new computed bcrypt hashes should use the "$2b$" prefix. * modules/pam_unix/passverify.c: Use bcrypt b-variant.
* Fix grammar of messages printed via pam_promptDmitry V. Levin2018-06-192-11/+12
| | | | | | | | | | | | | | | | | | | | | | | | | Turn into proper sentences those messages that are printed without further modifications using pam_prompt in contexts where proper sentences are expected. * libpam/pam_get_authtok.c (pam_get_authtok_internal): Fix grammar of the message passed to pam_error. * modules/pam_limits/pam_limits.c (pam_sm_open_session): Likewise. * modules/pam_cracklib/pam_cracklib.c (_pam_unix_approve_pass): Fix grammar of error messages passed to pam_error. * modules/pam_mail/pam_mail.c (report_mail): Fix grammar of a message passed to pam_info. * modules/pam_timestamp/pam_timestamp.c (verbose_success): Likewise. * modules/pam_selinux/pam_selinux.c (config_context, send_text): Fix grammar of messages passed to pam_prompt. * modules/pam_tally/pam_tally.c (tally_check): Fix grammar of messages passed to pam_info. * modules/pam_tally2/pam_tally2.c (tally_check): Likewise. * modules/pam_unix/pam_unix_acct.c (pam_sm_acct_mgmt): Fix grammar of messages passed to _make_remark. * modules/pam_unix/pam_unix_passwd.c (_pam_unix_approve_pass, pam_sm_chauthtok): Likewise. * po/Linux-PAM.pot: Regenerate.
* pam_unix: remove obsolete _UNIX_AUTHTOK, _UNIX_OLD_AUTHTOK, and ↵Dmitry V. Levin2018-05-312-7/+0
| | | | | | | | | | | | | | _UNIX_NEW_AUTHTOK macros The last use of these macros was removed by commit Linux-PAM-1.3.0~5 so their definitions should go as well. * modules/pam_unix/pam_unix_auth.c (_UNIX_AUTHTOK): Remove. * modules/pam_unix/pam_unix_passwd.c (_UNIX_OLD_AUTHTOK, _UNIX_NEW_AUTHTOK): Likewise. Complements: 7e09188c5dc4 ("pam_unix: Use pam_get_authtok() instead of direct pam_prompt() calls.")
* pam_unix: remove obsolete _unix_read_password prototypeDmitry V. Levin2018-05-311-7/+0
| | | | | | | | | | The function was removed by commit Linux-PAM-1.3.0~5 so the function prototype should go as well. * modules/pam_unix/support.h (_unix_read_password): Remove. Complements: 7e09188c5dc4 ("pam_unix: Use pam_get_authtok() instead of direct pam_prompt() calls.")
* pam_unix: Check return value of malloc used for setcred data (#24)Peter Urbanec2017-07-121-8/+12
| | | | | | | | Check the return value of malloc and if it failed print debug info, send a syslog message and return an error code. The test in AUTH_RETURN for ret_data not being NULL becomes redundant. Signed-off-by: Peter Urbanec <git.user@urbanec.net>
* Unification and cleanup of syslog log levels.Tomas Mraz2016-06-306-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * libpam/pam_handlers.c: Make memory allocation failures LOG_CRIT. * libpam/pam_modutil_priv.c: Make memory allocation failures LOG_CRIT. * modules/pam_echo/pam_echo.c: Make memory allocation failures LOG_CRIT. * modules/pam_env/pam_env.c: Make memory allocation failures LOG_CRIT. * modules/pam_exec/pam_exec.c: Make memory allocation failures LOG_CRIT. * modules/pam_filter/pam_filter.c: Make all non-memory call errors LOG_ERR. * modules/pam_group/pam_group.c: Make memory allocation failures LOG_CRIT. * modules/pam_issue/pam_issue.c: Make memory allocation failures LOG_CRIT. * modules/pam_lastlog/pam_lastlog.c: The lastlog file creation is syslogged with LOG_NOTICE, memory allocation errors with LOG_CRIT, other errors with LOG_ERR. * modules/pam_limits/pam_limits.c: User login limit messages are syslogged with LOG_NOTICE, stale utmp entry with LOG_INFO, non-memory errors with LOG_ERR. * modules/pam_listfile/pam_listfile.c: Rejection of user is syslogged with LOG_NOTICE. * modules/pam_namespace/pam_namespace.c: Make memory allocation failures LOG_CRIT. * modules/pam_nologin/pam_nologin.c: Make memory allocation failures LOG_CRIT, other errors LOG_ERR. * modules/pam_securetty/pam_securetty.c: Rejection of access is syslogged with LOG_NOTICE, non-memory errors with LOG_ERR. * modules/pam_selinux/pam_selinux.c: Make memory allocation failures LOG_CRIT. * modules/pam_succeed_if/pam_succeed_if.c: Make all non-memory call errors LOG_ERR. * modules/pam_time/pam_time.c: Make memory allocation failures LOG_CRIT. * modules/pam_timestamp/pam_timestamp.c: Make memory allocation failures LOG_CRIT. * modules/pam_unix/pam_unix_acct.c: Make all non-memory call errors LOG_ERR. * modules/pam_unix/pam_unix_passwd.c: Make memory allocation failures LOG_CRIT, other errors LOG_ERR. * modules/pam_unix/pam_unix_sess.c: Make all non-memory call errors LOG_ERR. * modules/pam_unix/passverify.c: Unknown user is syslogged with LOG_NOTICE. * modules/pam_unix/support.c: Unknown user is syslogged with LOG_NOTICE and max retries ignorance by application likewise. * modules/pam_unix/unix_chkpwd.c: Make all non-memory call errors LOG_ERR. * modules/pam_userdb/pam_userdb.c: Password authentication error is syslogged with LOG_NOTICE. * modules/pam_xauth/pam_xauth.c: Make memory allocation failures LOG_CRIT.
* pam_unix: Document that MD5 password hash is used to store old passwords.Tomas Mraz2016-04-191-0/+2
| | | | | modules/pam_unix/pam_unix.8.xml: Document that the MD5 password hash is used to store the old passwords when remember option is set.
* pam_unix: Use pam_get_authtok() instead of direct pam_prompt() calls.Tomas Mraz2016-04-065-208/+23
| | | | | | | | | | | | | | | | We have to drop support for not_set_pass option which is not much useful anyway. Instead we get proper support for authtok_type option. * modules/pam_unix/pam_unix.8.xml: Removed not_set_pass option, added authtok_ty pe option. * modules/pam_unix/pam_unix_auth.c (pam_sm_authenticate): Replace _unix_read_pas sword() call with equivalent pam_get_authtok() call. * modules/pam_unix/pam_unix_passwd.c (pam_sm_chauthtok): Likewise and also drop support for not_set_pass. * modules/pam_unix/support.c (_unix_read_password): Remove. * modules/pam_unix/support.h: Remove UNIX_NOT_SET_PASS add UNIX_AUTHTOK_TYPE.
* pam_unix: Make password expiration messages more user-friendly.Tomas Mraz2016-04-041-2/+2
| | | | | * modules/pam_unix/pam_unix_acct.c (pam_sm_acct_mgmt): Make password expiration messages more user-friendly.
* Use TI-RPC functions if we compile and link against libtirpc.Thorsten Kukuk2016-04-011-1/+72
| | | | | | | | The old SunRPC functions don't work with IPv6. * configure.ac: Set and restore CPPFLAGS * modules/pam_unix/pam_unix_passwd.c: Replace getrpcport with rpcb_getaddr if available.
* Remove "--enable-static-modules" option and support fromThorsten Kukuk2016-03-297-54/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Linux-PAM. It was never official supported and was broken since years. * configure.ac: Remove --enable-static-modules option. * doc/man/pam_sm_acct_mgmt.3.xml: Remove PAM_EXTERN. * doc/man/pam_sm_authenticate.3.xml: Likewise. * doc/man/pam_sm_chauthtok.3.xml: Likewise. * doc/man/pam_sm_close_session.3.xml: Likewise. * doc/man/pam_sm_open_session.3.xml: Likewise. * doc/man/pam_sm_setcred.3.xml: Likewise. * libpam/Makefile.am: Remove STATIC_MODULES cases. * libpam/include/security/pam_modules.h: Remove PAM_STATIC parts. * libpam/pam_dynamic.c: Likewise. * libpam/pam_handlers.c: Likewise. * libpam/pam_private.h: Likewise. * libpam/pam_static.c: Remove file. * libpam/pam_static_modules.h: Remove header file. * modules/pam_access/pam_access.c: Remove PAM_EXTERN and PAM_STATIC parts. * modules/pam_cracklib/pam_cracklib.c: Likewise. * modules/pam_debug/pam_debug.c: Likewise. * modules/pam_deny/pam_deny.c: Likewise. * modules/pam_echo/pam_echo.c: Likewise. * modules/pam_env/pam_env.c: Likewise. * modules/pam_exec/pam_exec.c: Likewise. * modules/pam_faildelay/pam_faildelay.c: Likewise. * modules/pam_filter/pam_filter.c: Likewise. * modules/pam_ftp/pam_ftp.c: Likewise. * modules/pam_group/pam_group.c: Likewise. * modules/pam_issue/pam_issue.c: Likewise. * modules/pam_keyinit/pam_keyinit.c: Likewise. * modules/pam_lastlog/pam_lastlog.c: Likewise. * modules/pam_limits/pam_limits.c: Likewise. * modules/pam_listfile/pam_listfile.c: Likewise. * modules/pam_localuser/pam_localuser.c: Likewise. * modules/pam_loginuid/pam_loginuid.c: Likewise. * modules/pam_mail/pam_mail.c: Likewise. * modules/pam_mkhomedir/pam_mkhomedir.c: Likewise. * modules/pam_motd/pam_motd.c: Likewise. * modules/pam_namespace/pam_namespace.c: Likewise. * modules/pam_nologin/pam_nologin.c: Likewise. * modules/pam_permit/pam_permit.c: Likewise. * modules/pam_pwhistory/pam_pwhistory.c: Likewise. * modules/pam_rhosts/pam_rhosts.c: Likewise. * modules/pam_rootok/pam_rootok.c: Likewise. * modules/pam_securetty/pam_securetty.c: Likewise. * modules/pam_selinux/pam_selinux.c: Likewise. * modules/pam_sepermit/pam_sepermit.c: Likewise. * modules/pam_shells/pam_shells.c: Likewise. * modules/pam_stress/pam_stress.c: Likewise. * modules/pam_succeed_if/pam_succeed_if.c: Likewise. * modules/pam_tally/pam_tally.c: Likewise. * modules/pam_tally2/pam_tally2.c: Likewise. * modules/pam_time/pam_time.c: Likewise. * modules/pam_timestamp/pam_timestamp.c: Likewise. * modules/pam_tty_audit/pam_tty_audit.c: Likewise. * modules/pam_umask/pam_umask.c: Likewise. * modules/pam_userdb/pam_userdb.c: Likewise. * modules/pam_warn/pam_warn.c: Likewise. * modules/pam_wheel/pam_wheel.c: Likewise. * modules/pam_xauth/pam_xauth.c: Likewise. * modules/pam_unix/Makefile.am: Remove STATIC_MODULES part. * modules/pam_unix/pam_unix_acct.c: Remove PAM_STATIC part. * modules/pam_unix/pam_unix_auth.c: Likewise. * modules/pam_unix/pam_unix_passwd.c: Likewise. * modules/pam_unix/pam_unix_sess.c: Likewise. * modules/pam_unix/pam_unix_static.c: Removed. * modules/pam_unix/pam_unix_static.h: Removed. * po/POTFILES.in: Remove removed files. * tests/tst-dlopen.c: Remove PAM_STATIC part.
* Fix check for libtirpc and enhance check for libnsl to includeThorsten Kukuk2016-03-241-2/+2
| | | | | | | new libnsl. * configure.ac: fix setting of CFLAGS/LIBS, enhance libnsl check * modules/pam_unix/Makefile.am: replace NIS_* with TIRPC_* and NSL_*
* pam_unix: Silence warnings and fix a minor bug.Tomas Mraz2016-03-042-8/+2
| | | | | | | | | Fixes a minor bug in behavior when is_selinux_enabled() returned negative value. * modules/pam_unix/passverify.c: Add parentheses to SELINUX_ENABLED macro. (unix_update_shadow): Safe cast forwho to non-const char *. * modules/pam_unix/support.c: Remove unused SELINUX_ENABLED macro.
* pam_unix: Add no_pass_expiry option to ignore password expiration.Tomas Mraz2016-02-174-11/+47
| | | | | | | | | | | | * modules/pam_unix/pam_unix.8.xml: Document the no_pass_expiry option. * modules/pam_unix/pam_unix_acct.c (pam_sm_acct_mgmt): If no_pass_expiry is on and return value data is not set to PAM_SUCCESS then ignore PAM_NEW_AUTHTOK_REQD and PAM_AUTHTOK_EXPIRED returns. * modules/pam_unix/pam_unix_auth.c (pam_sm_authenticate): Always set the return value data. (pam_sm_setcred): Test for likeauth option and use the return value data only if set. * modules/pam_unix/support.h: Add the no_pass_expiry option.
* pam_unix: Change the salt length for new hashes to 16 charactersTomas Mraz2016-01-251-5/+2
| | | | | * modules/pam_unix/passverify.c (create_password_hash): Change the salt length for new hashes to 16 characters.
* Release version 1.2.1Thorsten Kukuk2015-06-225-11/+33
| | | | | | | | | | | | | | | | | | | | | | | | Security fix: CVE-2015-3238 If the process executing pam_sm_authenticate or pam_sm_chauthtok method of pam_unix is not privileged enough to check the password, e.g. if selinux is enabled, the _unix_run_helper_binary function is called. When a long enough password is supplied (16 pages or more, i.e. 65536+ bytes on a system with 4K pages), this helper function hangs indefinitely, blocked in the write(2) call while writing to a blocking pipe that has a limited capacity. With this fix, the verifiable password length will be limited to PAM_MAX_RESP_SIZE bytes (i.e. 512 bytes) for pam_exec and pam_unix. * NEWS: Update * configure.ac: Bump version * modules/pam_exec/pam_exec.8.xml: document limitation of password length * modules/pam_exec/pam_exec.c: limit password length to PAM_MAX_RESP_SIZE * modules/pam_unix/pam_unix.8.xml: document limitation of password length * modules/pam_unix/pam_unix_passwd.c: limit password length * modules/pam_unix/passverify.c: Likewise * modules/pam_unix/passverify.h: Likewise * modules/pam_unix/support.c: Likewise
* Fix some grammatical errors in documentation.Thorsten Kukuk2015-04-271-1/+1
| | | | | | | | | | | | | | | | | Patch by Louis Sautier * doc/adg/Linux-PAM_ADG.xml: Fix gramatical errors. * doc/man/pam.3.xml: Likewise. * doc/man/pam_acct_mgmt.3.xml: Likewise. * doc/man/pam_chauthtok.3.xml: Likewise. * doc/man/pam_sm_chauthtok.3.xml: Likewise. * modules/pam_limits/limits.conf.5.xml: Likewise. * modules/pam_mail/pam_mail.8.xml: Likewise. * modules/pam_rhosts/pam_rhosts.c: Likewise. * modules/pam_shells/pam_shells.8.xml: Likewise. * modules/pam_tally/pam_tally.8.xml: Likewise. * modules/pam_tally2/pam_tally2.8.xml: Likewise. * modules/pam_unix/pam_unix.8.xml: Likewise.
* Add "quiet" option to pam_unix to suppress informential infoThorsten Kukuk2015-04-233-6/+25
| | | | | | | | | messages from session. * modules/pam_unix/pam_unix.8.xml: Document new option. * modules/pam_unix/support.h: Add quiet option. * modules/pam_unix/pam_unix_sess.c: Don't print LOG_INFO messages if 'quiet' option is set.
* Use crypt_r if available in pam_userdb and in pam_unix.Tomas Mraz2015-04-071-2/+20
| | | | | | | * modules/pam_unix/passverify.c (create_password_hash): Call crypt_r() instead of crypt() if available. * modules/pam_userdb/pam_userdb.c (user_lookup): Call crypt_r() instead of crypt() if available.
* Make pam_pwhistory and pam_unix tolerant of corrupted opasswd file.Tomas Mraz2014-07-211-1/+13
| | | | | | | * modules/pam_pwhistory/opasswd.c (parse_entry): Test for missing fields in opasswd entry and return error. * modules/pam_unix/passverify.c (save_old_password): Test for missing fields in opasswd entry and skip it.
* pam_unix: Check for NULL return from Goodcrypt_md5().Tomas Mraz2014-06-191-1/+1
| | | | | modules/pam_unix/pam_unix_passwd.c (check_old_password): Check for NULL return from Goodcrypt_md5().
* pam_unix: check for NULL return from malloc()Tomas Mraz2014-06-191-0/+2
| | | | * modules/pam_unix/md5_crypt.c (crypt_md5): Check for NULL return from malloc().
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