1. Ubuntu Security Notices
  2. USN-1707-1

USN-1707-1: libssh vulnerability

Publication date

28 January 2013

Overview

libssh could be made to crash if it received specially crafted network traffic.

Releases

Packages

  • libssh - A tiny C SSH library

Details

Yong Chuan Koh discovered that libssh incorrectly handled certain
negotiation requests. A remote attacker could use this to cause libssh to
crash, resulting in a denial of service.

Yong Chuan Koh discovered that libssh incorrectly handled certain
negotiation requests. A remote attacker could use this to cause libssh to
crash, resulting in a denial of service.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
12.10 quantal libssh-4 –  0.5.2-1ubuntu0.12.10.2
12.04 precise libssh-4 –  0.5.2-1ubuntu0.12.04.2
11.10 oneiric libssh-4 –  0.5.2-1ubuntu0.11.10.2
10.04 lucid libssh-4 –  0.4.2-1ubuntu1.2

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References

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