bugtraq - Multiple PAM vulnerabilities in portable OpenSSH

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <200309231240.h8NCePCd025947@cvs.openbsd.org>
Date: Tue, 23 Sep 2003 06:40:25 -0600 (MDT)
From: Damien Miller <djm@....openbsd.org>
To: openssh-unix-announce@...drot.org
Cc: announce@...nbsd.org, bugtraq@...urityfocus.com, lwn@....net,
        misc@...nbsd.org, news@...uxsecurity.com, openssh-unix-dev@...drot.org,
        pab@...heise.de, secureshell@...urityfocus.com, technik@...ua.de,
        timothy@...key.org, webmaster@...dly.org
Subject: Multiple PAM vulnerabilities in portable OpenSSH


Subject: Portable OpenSSH Security Advisory: sshpam.adv

This document can be found at:  http://www.openssh.com/txt/sshpam.adv

1. Versions affected:

        Portable OpenSSH versions 3.7p1 and 3.7.1p1 contain multiple 
        vulnerabilities in the new PAM code. At least one of these bugs 
        is remotely exploitable (under a non-standard configuration, 
        with privsep disabled). 

        The OpenBSD releases of OpenSSH do not contain this code and 
        are not vulnerable. Older versions of portable OpenSSH are not 
        vulnerable.

2. Solution:

        Upgrade to Portable OpenSSH 3.7.1p2 or disable PAM 
        support ("UsePam no" in sshd_config). 

        Due to complexity, inconsistencies in the specification and 
        differences between vendors' PAM implementations we recommend 
        that PAM be left disabled in sshd_config unless there is a need 
        for its use. Sites only using public key or simple password 
        authentication usually have little need to enable PAM support.