Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2014.0444
openssh security update
7 April 2014
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: openssh
Publisher: Debian
Operating System: Debian GNU/Linux 7
Debian GNU/Linux 6
Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-2653 CVE-2014-2532
Reference: ESB-2014.0363
Original Bulletin:
http://www.debian.org/security/2014/dsa-2894
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running openssh check for an updated version of the software for
their operating system.
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Debian Security Advisory DSA-2894-1 security@debian.org
http://www.debian.org/security/ Salvatore Bonaccorso
April 05, 2014 http://www.debian.org/security/faq
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Package : openssh
CVE ID : CVE-2014-2532 CVE-2014-2653
Debian Bug : 742513
Two vulnerabilities were discovered in OpenSSH, an implementation of the
SSH protocol suite. The Common Vulnerabilities and Exposures project
identifies the following problems:
CVE-2014-2532
Jann Horn discovered that OpenSSH incorrectly handled wildcards in
AcceptEnv lines. A remote attacker could use this issue to trick
OpenSSH into accepting any environment variable that contains the
characters before the wildcard character.
CVE-2014-2653
Matthew Vernon reported that if a SSH server offers a
HostCertificate that the ssh client doesn't accept, then the client
doesn't check the DNS for SSHFP records. As a consequence a
malicious server can disable SSHFP-checking by presenting a
certificate.
Note that a host verification prompt is still displayed before
connecting.
For the oldstable distribution (squeeze), these problems have been fixed in
version 1:5.5p1-6+squeeze5.
For the stable distribution (wheezy), these problems have been fixed in
version 1:6.0p1-4+deb7u1.
For the unstable distribution (sid), these problems have been fixed in
version 1:6.6p1-1.
We recommend that you upgrade your openssh packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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