USN-1064-1: OpenSSL vulnerability

15 February 2011

openssl vulnerability

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

  • Ubuntu 10.10
  • Ubuntu 10.04 LTS

Summary

Software Description

  • openssl

Details

Neel Mehta discovered that incorrectly formatted ClientHello handshake messages could cause OpenSSL to parse past the end of the message. This could allow a remote attacker to cause a crash and denial of service by triggering invalid memory accesses.

Update instructions

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

Ubuntu 10.10
libssl0.9.8 - 0.9.8o-1ubuntu4.4
Ubuntu 10.04 LTS
libssl0.9.8 - 0.9.8k-7ubuntu8.6

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to make all the necessary changes.

References