Ubuntu Security Notice USN-750-1
30th March, 2009
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 8.10
- Ubuntu 8.04 LTS
- Ubuntu 7.10
- Ubuntu 6.06 LTS
It was discovered that OpenSSL did not properly validate the length of an
encoded BMPString or UniversalString when printing ASN.1 strings. If a user
or automated system were tricked into processing a crafted certificate, an
attacker could cause a denial of service via application crash in
applications linked against OpenSSL.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 8.10:
- libssl0.9.8 0.9.8g-10.1ubuntu2.2
- Ubuntu 8.04 LTS:
- libssl0.9.8 0.9.8g-4ubuntu3.5
- Ubuntu 7.10:
- libssl0.9.8 0.9.8e-5ubuntu3.4
- Ubuntu 6.06 LTS:
- libssl0.9.8 0.9.8a-7ubuntu0.7
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system upgrade you need to reboot your computer to
effect the necessary changes.