USN-1436-1: Libtasn1 vulnerability
Ubuntu Security Notice USN-1436-1
2nd May, 2012
libtasn1-3 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS
Summary
Libtasn1 could be made to crash or run programs as your login if it received specially crafted input.
Software description
- libtasn1-3 - Library to manage ASN.1 structures
Details
Matthew Hall discovered that Libtasn incorrectly handled certain large
values. An attacker could exploit this with a specially crafted ASN.1
structure and cause a denial of service, or possibly execute arbitrary
code.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 12.04 LTS:
- libtasn1-3 2.10-1ubuntu1.1
- Ubuntu 11.10:
- libtasn1-3 2.9-4ubuntu0.1
- Ubuntu 11.04:
- libtasn1-3 2.7-1ubuntu1.1
- Ubuntu 10.04 LTS:
- libtasn1-3 2.4-1ubuntu0.1
- Ubuntu 8.04 LTS:
- libtasn1-3 1.1-1ubuntu0.1
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.