USN-3309-1: Libtasn1 vulnerability
Ubuntu Security Notice USN-3309-1
5th June, 2017
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.04
- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Libtasn1 could be made to crash or run programs as your login if it opened a specially crafted file.
- libtasn1-6 - Library to manage ASN.1 structures
Jakub Jirasek discovered that GnuTLS incorrectly handled certain
assignments files. If a user were tricked into processing a specially
crafted assignments file, a remote attacker could possibly execute arbirary
The problem can be corrected by updating your system to the following package version:
- Ubuntu 17.04:
- libtasn1-6 4.10-1ubuntu0.1
- Ubuntu 16.10:
- libtasn1-6 4.9-4ubuntu0.1
- Ubuntu 16.04 LTS:
- libtasn1-6 4.7-3ubuntu0.16.04.2
- Ubuntu 14.04 LTS:
- libtasn1-6 3.4-3ubuntu0.5
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.