Description

Cyrus SASL 2.1.23, 2.1.26, and earlier does not properly handle when a NULL value is returned upon an error by the crypt function as implemented in glibc 2.17 and later, which allows remote attackers to cause a denial of service (thread crash and consumption) via (1) an invalid salt or, when FIPS-140 is enabled, a (2) DES or (3) MD5 encrypted password, which triggers a NULL pointer dereference.

Weaknesses 1

Affected Products 33

References 9

• git.cyrusimap.org http://git.cyrusimap.org/cyrus-sasl/commit/?id=dedad73e5e7a75d01a5f3d5a6702ab8ccd2ff40d
  ExploitPatch
• security.gentoo.org http://security.gentoo.org/glsa/glsa-201309-01.xml
• debian.org http://www.debian.org/security/2015/dsa-3368
• openwall.com http://www.openwall.com/lists/oss-security/2013/07/12/3
• openwall.com http://www.openwall.com/lists/oss-security/2013/07/12/6
• openwall.com http://www.openwall.com/lists/oss-security/2013/07/13/1
• openwall.com http://www.openwall.com/lists/oss-security/2013/07/15/1
• ubuntu.com http://www.ubuntu.com/usn/USN-2755-1
• linuxquestions.org https://www.linuxquestions.org/questions/slackware-14/%5Bslackware-current%5D-glibc-2-17-shadow-and-other-penumbrae-4175461061/

Remediation

• git.cyrusimap.org http://git.cyrusimap.org/cyrus-sasl/commit/?id=dedad73e5e7a75d01a5f3d5a6702ab8ccd2ff40d
  ExploitPatch