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* pam_unix: Prefer a gensalt function, that supports auto entropy.Björn Esser2018-11-221-0/+13
| | | | | | * 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.
* Unification and cleanup of syslog log levels.Tomas Mraz2016-06-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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: Silence warnings and fix a minor bug.Tomas Mraz2016-03-041-2/+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: 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 Kukuk2015-06-221-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | 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
* 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.
* Check for crypt() failure returning NULL.Paul Wouters2012-04-111-2/+4
| | | | | | * modules/pam_unix/pam_unix_passwd.c (pam_sm_chauthtok): Adjust syslog message. * modules/pam_unix/passverify.c (create_password_hash): Check for crypt() returning NULL.
* Fix matching of usernames in the pam_unix remember feature.Tomas Mraz2012-01-031-1/+2
| | | | | | | * modules/pam_unix/pam_unix_passwd.c (check_old_password): Make sure we match only the whole username in opasswd entry. * modules/pam_unix/passverify.c (save_old_password): Likewise make sure we match only the whole username in opasswd entry.
* Fix whitespace issuesDmitry V. Levin2011-10-261-10/+10
| | | | | | Cleanup trailing whitespaces, indentation that uses spaces before tabs, and blank lines at EOF. Make the project free of warnings reported by git diff --check 4b825dc642cb6eb9a060e54bf8d69288fbee4904 HEAD
* Relevant BUGIDs: 2923437Thorsten Kukuk2010-08-091-1/+1
| | | | | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2010-08-09 Thorsten Kukuk <kukuk@thkukuk.de> * modules/pam_unix/passverify.c (check_shadow_expiry): Correct check for expired date. * modules/pam_unix/pam_unix_passwd.c (_pam_unix_approve_pass): Remove check for password length. Bug #2923437.
* Relevant BUGIDs: 2730965Thorsten Kukuk2010-08-041-0/+6
| | | | | | | | | | | | Purpose of commit: workaround Commit summary: --------------- 2010-08-04 Thorsten Kukuk <kukuk@thkukuk.de> * modules/pam_unix/passverify.c (PAMH_ARG_DECL): Don't request password change if time is not yet set (1.1.1970). Bug #2730965.
* Relevant BUGIDs: rhbz#545053Tomas Mraz2009-12-081-7/+18
| | | | | | | | | | | Purpose of commit: new feature Commit summary: --------------- 2009-12-08 Tomas Mraz <t8m@centrum.cz> * modules/pam_unix/passverify.c(unix_update_shadow): Create a shadow entry if not present in the file.
* Relevant BUGIDs:Thorsten Kukuk2009-06-261-7/+7
| | | | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- Fix blowfish support 009-06-25 Thorsten Kukuk <kukuk@thkukuk.de> * configure.in: Rename crypt_gensalt_rn to crypt_gensalt_r * modules/pam_unix/passverify.c: Likewise.
* Relevant BUGIDs: 2487654Thorsten Kukuk2009-03-251-1/+1
| | | | | | | | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2009-03-25 Thorsten Kukuk <kukuk@thkukuk.de> * modules/pam_mkhomedir/pam_mkhomedir.c: Make option handling reentrant (#2487654) (_pam_parse): Fix umask option. * modules/pam_unix/passverify.c: Fix typo. * modules/pam_issue/pam_issue.c: Fix compiler warning. * modules/pam_ftp/pam_ftp.c: Likewise.
* Relevant BUGIDs:Tomas Mraz2009-03-241-3/+18
| | | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2009-03-24 Tomas Mraz <t8m@centrum.cz> * modules/pam_unix/passverify.c(save_old_password): Call fflush() and fsync(). (unix_update_passwd, unix_update_shadow): Likewise. * modules/pam_pwhistory/opasswd.c(save_old_password): Likewise.
* Relevant BUGIDs:Tomas Mraz2009-02-271-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Purpose of commit: new feature Commit summary: --------------- 2009-02-27 Tomas Mraz <t8m@centrum.cz> * modules/pam_mkhomedir/pam_mkhomedir.c(create_homedir): Replace signal() with sigaction(). * modules/pam_namespace/pam_namespace.c(inst_init, cleanup_tmpdirs): Likewise. * modules/pam_unix/pam_unix_acct.c(_unix_run_verify_binary): Likewise. * modules/pam_unix/pam_unix_passwd.c(_unix_run_update_binary): Likewise. * modules/pam_unix/passverify.c(su_sighandler): Likewise. * modules/pam_unix/support.c(_unix_run_helper_binary): Likewise. * modules/pam_tally2/Makefile.am: Link the pam_tally2 app to libpam for auxiliary functions. * modules/pam_tally2/pam_tally2.8.xml: Drop non-existing no_reset option. Document new serialize option. * modules/pam_tally2/pam_tally2.c: Add support for the new serialize option. (_cleanup, tally_set_data, tally_get_data): Add tally file handle to tally PAM data. Needed for fcntl() locking. (get_tally): Use low level file access instead of stdio buffered FILE. If serialize option is used lock the tally file access. (set_tally, tally_bump, tally_reset): Use low level file access instead of stdio buffered FILE. Close the file handle only when it is not owned by PAM data. (pam_sm_authenticate, pam_sm_setcred, pam_sm_acct_mgmt): Pass the tally file handle to tally_set_data(). Get it from tally_get_data(). (main): Use low level file access instead of stdio buffered FILE.
* Relevant BUGIDs: debian#514437 rhbz#487216Tomas Mraz2009-02-261-1/+9
| | | | | | | | | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2009-02-26 Tomas Mraz <t8m@centrum.cz> * xtests/Makefile.am: Add tst-pam_unix4. * xtests/tst-pam_unix4.c: New test for password change and shadow min days limit. * xtests/tst-pam_unix4.pamd: Likewise. * xtests/tst-pam_unix4.sh: Likewise. * modules/pam_unix/pam_unix_acct.c (pam_sm_acct_mgmt): Ignore PAM_AUTHTOK_ERR on shadow verification. * modules/pam_unix/passverify.c (check_shadow_expiry): Return PAM_AUTHTOK_ERR if sp_min limit for password change is defied.
* Relevant BUGIDs:Thorsten Kukuk2008-12-011-64/+43
| | | | | | | | | | | | | | | | | | | | | | Purpose of commit: new feature Commit summary: --------------- 2008-12-01 Thorsten Kukuk <kukuk@thkukuk.de> * modules/pam_unix/pam_unix.8.xml: Document blowfish option. * configure.in: Check for crypt_gensalt_rn. * modules/pam_unix/pam_unix_passwd.c: Pass pamh to create_password_hash function. * modules/pam_unix/passverify.c (create_password_hash): Add blowfish support. * modules/pam_unix/passverify.h: Adjust create_password_hash prototype. * modules/pam_unix/support.c: Add support for blowfish option. * modules/pam_unix/support.h: Add defines for blowfish option. Patch from Diego Flameeyes Pettenò <flameeyes@gmail.com>
* Relevant BUGIDs:Thorsten Kukuk2008-11-301-1/+3
| | | | | | | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2008-11-29 Thorsten Kukuk <kukuk@thkukuk.de> * configure.in: Check for xcrypt.h, fix typo in libaudit check. * modules/pam_cracklib/pam_cracklib.c: Include xcrypt.h if available. * modules/pam_unix/bigcrypt.c: Likewise. * modules/pam_unix/passverify.c: Likewise. * modules/pam_userdb/pam_userdb.c: Likewise. Patch from Diego Flameeyes Pettenò <flameeyes@gmail.com>
* Relevant BUGIDs:Steve Langasek2008-07-281-1/+7
| | | | | | | | | | | | | | Purpose of commit: bugfix (thread safety) Commit summary: --------------- 2008-07-28 Steve Langasek <vorlon@debian.org> * modules/pam_unix/passverify.c: make save_old_password() thread-safe by using pam_modutil_getpwnam() instead of getpwnam() * modules/pam_unix/passverify.c, modules/pam_unix/passverify.h, modules/pam_unix/pam_unix_passwd.c: add pamh argument to save_old_password()
* Relevant BUGIDs:Thorsten Kukuk2008-07-081-1/+1
| | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2008-07-08 Thorsten Kukuk <kukuk@thkukuk.de> * modules/pam_unix/passverify.c (verify_pwd_hash): Adjust debug statement.
* Relevant BUGIDs:Thorsten Kukuk2008-01-281-11/+17
| | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2008-01-28 Thorsten Kukuk <kukuk@suse.de> * modules/pam_unix/passverify.c: Fix compiling without SELinux support.
* Relevant BUGIDs: 1836981Tomas Mraz2008-01-241-3/+35
| | | | | | | | | | | | | | | Purpose of commit: bugfix Commit summary: --------------- 2008-01-24 Tomas Mraz <t8m@centrum.cz> * modules/pam_unix/bigcrypt.c (bigcrypt): Use crypt_r() when available. * modules/pam_unix/passverify.c (strip_hpux_aging): New function to strip HP/UX aging info from password hash. (verify_pwd_hash): Call strip_hpux_aging(), use crypt_r() when available.
* Relevant BUGIDs:Tomas Mraz2008-01-231-2/+968
| | | | | | | | | | Purpose of commit: cleanup, new feature Commit summary: --------------- Merging the the refactorization pam_unix_ref branch into the trunk. Added support for sha256 and sha512 password hashes to pam_unix when the libcrypt supports them.
* Relevant BUGIDs:Tomas Mraz2007-12-051-0/+125
Purpose of commit: cleanup Commit summary: --------------- 2007-12-05 Tomas Mraz <t8m@centrum.cz> * modules/pam_unix/Makefile.am: Add passverify.h and passverify.c as first part of pam_unix refactorization. * modules/pam_unix/pam_unix/pam_unix_acct.c: Include passverify.h. * modules/pam_unix/pam_unix_passwd.c: Likewise. * modules/pam_unix/passverify.c: New file with common functions. * modules/pam_unix/passverify.h: Prototypes for the common functions. * modules/pam_unix/support.c: Include passverify.h, move _unix_shadowed() to passverify.c. (_unix_verify_password): Refactor out verify_pwd_hash() function. * modules/pam_unix/support.h: Move _unix_shadowed() prototype to passverify.h * modules/pam_unix/unix_chkpwd.c: Use _unix_shadowed() and verify_pwd_hash() from passverify.c.
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