diff options
Diffstat (limited to 'abs/core/pam/pam-1.1.8-cve-2013-7041.patch')
| -rw-r--r-- | abs/core/pam/pam-1.1.8-cve-2013-7041.patch | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/abs/core/pam/pam-1.1.8-cve-2013-7041.patch b/abs/core/pam/pam-1.1.8-cve-2013-7041.patch deleted file mode 100644 index 96fa916..0000000 --- a/abs/core/pam/pam-1.1.8-cve-2013-7041.patch +++ /dev/null @@ -1,52 +0,0 @@ -From 57a1e2b274d0a6376d92ada9926e5c5741e7da20 Mon Sep 17 00:00:00 2001 -From: "Dmitry V. Levin" <ldv@altlinux.org> -Date: Fri, 24 Jan 2014 22:18:32 +0000 -Subject: [PATCH] pam_userdb: fix password hash comparison - -Starting with commit Linux-PAM-0-77-28-g0b3e583 that introduced hashed -passwords support in pam_userdb, hashes are compared case-insensitively. -This bug leads to accepting hashes for completely different passwords in -addition to those that should be accepted. - -Additionally, commit Linux-PAM-1_1_6-13-ge2a8187 that added support for -modern password hashes with different lengths and settings, did not -update the hash comparison accordingly, which leads to accepting -computed hashes longer than stored hashes when the latter is a prefix -of the former. - -* modules/pam_userdb/pam_userdb.c (user_lookup): Reject the computed -hash whose length differs from the stored hash length. -Compare computed and stored hashes case-sensitively. -Fixes CVE-2013-7041. - -Bug-Debian: http://bugs.debian.org/731368 ---- - modules/pam_userdb/pam_userdb.c | 9 ++++++--- - 1 file changed, 6 insertions(+), 3 deletions(-) - -diff --git a/modules/pam_userdb/pam_userdb.c b/modules/pam_userdb/pam_userdb.c -index de8b5b1..ff040e6 100644 ---- a/modules/pam_userdb/pam_userdb.c -+++ b/modules/pam_userdb/pam_userdb.c -@@ -222,12 +222,15 @@ user_lookup (pam_handle_t *pamh, const char *database, const char *cryptmode, - } else { - cryptpw = crypt (pass, data.dptr); - -- if (cryptpw) { -- compare = strncasecmp (data.dptr, cryptpw, data.dsize); -+ if (cryptpw && strlen(cryptpw) == (size_t)data.dsize) { -+ compare = memcmp(data.dptr, cryptpw, data.dsize); - } else { - compare = -2; - if (ctrl & PAM_DEBUG_ARG) { -- pam_syslog(pamh, LOG_INFO, "crypt() returned NULL"); -+ if (cryptpw) -+ pam_syslog(pamh, LOG_INFO, "lengths of computed and stored hashes differ"); -+ else -+ pam_syslog(pamh, LOG_INFO, "crypt() returned NULL"); - } - }; - --- -1.8.3.1 - |