Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2016.0459
libssh security update
24 February 2016
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: libssh
Publisher: Debian
Operating System: Debian GNU/Linux 8
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-0739 CVE-2015-3146 CVE-2014-8132
Original Bulletin:
http://www.debian.org/security/2016/dsa-3488
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running libssh check for an updated version of the software for
their operating system.
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Debian Security Advisory DSA-3488-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
February 23, 2016 https://www.debian.org/security/faq
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Package : libssh
CVE ID : CVE-2016-0739
Debian Bug : 815663
Aris Adamantiadis discovered that libssh, a tiny C SSH library,
incorrectly generated a short ephemeral secret for the
diffie-hellman-group1 and diffie-hellman-group14 key exchange methods.
The resulting secret is 128 bits long, instead of the recommended sizes
of 1024 and 2048 bits respectively. This flaw could allow an
eavesdropper with enough resources to decrypt or intercept SSH sessions.
For the oldstable distribution (wheezy), this problem has been fixed in
version 0.5.4-1+deb7u3. This update also includes fixes for
CVE-2014-8132 and CVE-2015-3146, which were previously scheduled for the
next wheezy point release.
For the stable distribution (jessie), this problem has been fixed in
version 0.6.3-4+deb8u2.
We recommend that you upgrade your libssh packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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