Ubuntu Security Notice 2478-1 - It was discovered that libssh incorrectly handled certain kexinit packets. A remote attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service.
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Ubuntu Security Notice USN-2478-1
January 19, 2015
libssh vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary:
libssh could be made to crash if it received specially crafted network
traffic.
Software Description:
- libssh: A tiny C SSH library
Details:
It was discovered that libssh incorrectly handled certain kexinit packets.
A remote attacker could possibly use this issue to cause libssh to crash,
resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.10:
libssh-4 0.6.3-2ubuntu1.1
Ubuntu 14.04 LTS:
libssh-4 0.6.1-0ubuntu3.1
Ubuntu 12.04 LTS:
libssh-4 0.5.2-1ubuntu0.12.04.4
In general, a standard system update will make all the necessary changes.
References:
https://www.ubuntu.com/usn/usn-2478-1
CVE-2014-8132
Package Information:
https://launchpad.net/ubuntu/+source/libssh/0.6.3-2ubuntu1.1
https://launchpad.net/ubuntu/+source/libssh/0.6.1-0ubuntu3.1
https://launchpad.net/ubuntu/+source/libssh/0.5.2-1ubuntu0.12.04.4