USN-704-1: OpenSSL vulnerability

Ubuntu Security Notice USN-704-1

7th January, 2009

openssl vulnerability

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

Software description

  • openssl


It was discovered that OpenSSL did not properly perform signature verification
on DSA and ECDSA keys. If user or automated system connected to a malicious
server or a remote attacker were able to perform a man-in-the-middle attack,
this flaw could be exploited to view sensitive information.

Update instructions

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

Ubuntu 8.10:
libssl0.9.8 0.9.8g-10.1ubuntu2.1
openssl 0.9.8g-10.1ubuntu2.1
Ubuntu 8.04 LTS:
libssl0.9.8 0.9.8g-4ubuntu3.4
openssl 0.9.8g-4ubuntu3.4
Ubuntu 7.10:
libssl0.9.8 0.9.8e-5ubuntu3.3
openssl 0.9.8e-5ubuntu3.3
Ubuntu 6.06 LTS:
libssl0.9.8 0.9.8a-7ubuntu0.6
openssl 0.9.8a-7ubuntu0.6

To update your system, please follow these instructions:

After a standard system upgrade you need to reboot your computer to
effect the necessary changes.