1. Ubuntu Security Notices
  2. USN-2145-1

USN-2145-1: libssh vulnerability

Publication date

12 March 2014

Overview

A security issue was fixed in libssh.

Releases

Packages

  • libssh - A tiny C SSH library

Details

Aris Adamantiadis discovered that libssh allowed the OpenSSL PRNG state to
be reused when implementing forking servers. This could allow an attacker
to possibly obtain information about the state of the PRNG and perform
cryptographic attacks.

Aris Adamantiadis discovered that libssh allowed the OpenSSL PRNG state to
be reused when implementing forking servers. This could allow an attacker
to possibly obtain information about the state of the PRNG and perform
cryptographic attacks.

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 libssh-4 –  0.5.4-1ubuntu0.1
12.10 quantal libssh-4 –  0.5.2-1ubuntu0.12.10.3
12.04 precise libssh-4 –  0.5.2-1ubuntu0.12.04.3

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›