1. Ubuntu Security Notices
  2. USN-1640-1

USN-1640-1: libssh vulnerabilities

Publication date

26 November 2012

Overview

linssh could be made to crash or run programs if it received specially crafted network traffic.

Releases

Packages

  • libssh - A tiny C SSH library

Details

Xi Wang and Florian Weimer discovered that libssh incorrectly handled
memory. A remote attacker could use this to cause libssh to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2012-4559, CVE-2012-4560, CVE-2012-4561, CVE-2012-4562)

Xi Wang and Florian Weimer discovered that libssh incorrectly handled
memory. A remote attacker could use this to cause libssh to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2012-4559, CVE-2012-4560, CVE-2012-4561, CVE-2012-4562)

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 –  0.5.2-1ubuntu0.12.10.1
12.04 precise libssh-4 –  0.5.2-1ubuntu0.12.04.1
11.10 oneiric libssh-4 –  0.5.2-1ubuntu0.11.10.1
10.04 lucid libssh-4 –  0.4.2-1ubuntu1.1

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References

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