Home page logo
/

bugtraq logo Bugtraq mailing list archives

[OpenPKG-SA-2006.022] OpenPKG Security Advisory (openssh)
From: OpenPKG <openpkg () openpkg org>
Date: Sun, 1 Oct 2006 10:27:15 +0200

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

________________________________________________________________________

OpenPKG Security Advisory                            The OpenPKG Project
http://www.openpkg.org/security/                  http://www.openpkg.org
openpkg-security () openpkg org                         openpkg () openpkg org
OpenPKG-SA-2006.022                                          01-Oct-2006
________________________________________________________________________

Package:          openssh
Vulnerability:    denial of service
OpenPKG Specific: no

OpenPKG Series:   Affected Packages:          Corrected Packages:
CURRENT           <= openssh-4.3p2-20060924   >= openssh-4.4p1-20060928
2-STABLE          <= openssh-4.3p2-2.20060622 >= openssh-4.4p1-2.20060929
2-STABLE-20060622 <= openssh-4.3p2-2.20060622 >= openssh-4.4p1-2.20060929
2.5-RELEASE       <= openssh-4.2p1-2.5.3      >= openssh-4.2p1-2.5.4

Description:
  According to a vendor security advisory [0], multiple vulnerabilities
  exist in the Secure Shell (SSH) implementation OpenSSH [1]:

  First, a pre-authentication denial of service was found by Tavis
  Ormandy that would cause sshd(8) to spin until the login grace time
  expired. The Common Vulnerabilities and Exposures (CVE) project
  assigned the ids CVE-2006-4924 [2] and CVE-2006-4925 [3] to the
  problem.

  Second, an unsafe signal handler, reported by Mark Dowd, was fixed.
  The signal handler was vulnerable to a race condition that could be
  exploited to perform a pre-authentication denial of service. This
  vulnerability could theoretically lead to pre-authentication remote
  code execution if some authentication methods like GSSAPI are enabled,
  but the likelihood of successful exploitation appears remote. The
  Common Vulnerabilities and Exposures (CVE) project assigned the id
  CVE-2006-5051 [4] to the problem.
________________________________________________________________________

References:
  [0] http://www.openssh.com/txt/release-4.4 
  [1] http://www.openssh.com/
  [2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4924
  [3] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4925
  [4] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5051
________________________________________________________________________

For security reasons, this advisory was digitally signed with the
OpenPGP public key "OpenPKG <openpkg () openpkg org>" (ID 63C4CB9F) of the
OpenPKG project which you can retrieve from http://pgp.openpkg.org and
hkp://pgp.openpkg.org. Follow the instructions on http://pgp.openpkg.org
for details on how to verify the integrity of this advisory.
________________________________________________________________________

-----BEGIN PGP SIGNATURE-----
Comment: OpenPKG <openpkg () openpkg org>

iD8DBQFFH3vSgHWT4GPEy58RAlDBAJ40g98LLlcoVTAdnczmE9BjorOUjQCfSD82
lZQ3bMOn8xTxAPyL2PrWK7w=
=GNXY
-----END PGP SIGNATURE-----


  By Date           By Thread  

Current thread:
  • [OpenPKG-SA-2006.022] OpenPKG Security Advisory (openssh) OpenPKG (Oct 02)
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]