USN-830-1: OpenSSL vulnerability

14 September 2009

openssl vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 9.04
  • Ubuntu 8.10
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Software Description

  • openssl

Details

Dan Kaminsky discovered OpenSSL would still accept certificates with MD2 hash signatures. As a result, an attacker could potentially create a malicious trusted certificate to impersonate another site. This update handles this issue by completely disabling MD2 for certificate validation.

Update instructions

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

Ubuntu 9.04
libssl0.9.8 - 0.9.8g-15ubuntu3.3
Ubuntu 8.10
libssl0.9.8 - 0.9.8g-10.1ubuntu2.5
Ubuntu 8.04 LTS
libssl0.9.8 - 0.9.8g-4ubuntu3.8
Ubuntu 6.06 LTS
libssl0.9.8 - 0.9.8a-7ubuntu0.10

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.

References