USN-2957-2: Libtasn1 vulnerability

02 May 2016

Libtasn1 could be made to hang if it processed specially crafted data.



  • libtasn1-6 - Library to manage ASN.1 structures


USN-2957-1 fixed a vulnerability in Libtasn1. This update provides the
corresponding update for Ubuntu 16.04 LTS.

Original advisory details:

Pascal Cuoq and Miod Vallat discovered that Libtasn1 incorrectly handled
certain malformed DER certificates. A remote attacker could possibly use
this issue to cause applications using Libtasn1 to hang, resulting in a
denial of service.

Update instructions

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

Ubuntu 16.04

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


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