1. Ubuntu Security Notices
  2. USN-2821-1

USN-2821-1: GnuTLS vulnerability

Publication date

30 November 2015

Overview

GnuTLS could be made to expose sensitive information over the network.

Releases

Packages

Details

It was discovered that GnuTLS incorrectly validated the first byte of
padding in CBC modes. A remote attacker could possibly use this issue to
perform a padding oracle attack.

It was discovered that GnuTLS incorrectly validated the first byte of
padding in CBC modes. A remote attacker could possibly use this issue to
perform a padding oracle attack.

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
14.04 trusty libgnutls26 –  2.12.23-12ubuntu2.3
12.04 precise libgnutls26 –  2.12.14-5ubuntu3.10

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References

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