oss-security - Re: CVE request - Debian/Ubuntu PAM auth module selection

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Date: Wed, 16 Sep 2009 21:33:22 -0400 (EDT)
From: "Steven M. Christey" <coley@...us.mitre.org>
To: oss-security <oss-security@...ts.openwall.com>
cc: "Steven M. Christey" <coley@...us.mitre.org>
Subject: Re: CVE request - Debian/Ubuntu PAM auth module
 selection

======================================================
Name: CVE-2009-3232
Status: Candidate
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3232
Reference: MLIST:[oss-security] 20090908 CVE request - Debian/Ubuntu PAM auth module selection
Reference: URL:http://www.openwall.com/lists/oss-security/2009/09/08/7
Reference: CONFIRM:http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=519927
Reference: CONFIRM:https://launchpad.net/bugs/410171
Reference: UBUNTU:USN-828-1
Reference: URL:http://www.ubuntulinux.org/support/documentation/usn/usn-828-1
Reference: BID:36306
Reference: URL:http://www.securityfocus.com/bid/36306
Reference: SECUNIA:36620
Reference: URL:http://secunia.com/advisories/36620

pam-auth-update for PAM, as used in Ubuntu 8.10 and 9.4, and Debian
GNU/Linux, does not properly handle an "empty selection" for system
authentication modules in certain rare configurations, which causes
any attempt to be successful and allows remote attackers to bypass
authentication.

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.