USN-2155-1: OpenSSH vulnerability

Publication date

25 March 2014

Overview

OpenSSH incorrectly handled environment restrictions with wildcards.


Packages

  • openssh - secure shell (SSH) for secure access to remote machines

Details

Jann Horn discovered that OpenSSH incorrectly handled wildcards in
AcceptEnv lines. A remote attacker could use this issue to possibly bypass
certain intended environment variable restrictions.

Jann Horn discovered that OpenSSH incorrectly handled wildcards in
AcceptEnv lines. A remote attacker could use this issue to possibly bypass
certain intended environment variable restrictions.

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
13.10 saucy openssh-server –  1:6.2p2-6ubuntu0.2
12.10 quantal openssh-server –  1:6.0p1-3ubuntu1.1
12.04 precise openssh-server –  1:5.9p1-5ubuntu1.2
10.04 lucid openssh-server –  1:5.3p1-3ubuntu7.1

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Have additional questions?

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