Ubuntu Security Notice USN-884-1 January 14, 2010
It was discovered that OpenSSL did not correctly free unused memory in certain situations. A remote attacker could trigger this flaw in services that used SSL, causing the service to use all available system memory, leading to a denial of service.
The problem can be corrected by upgrading your system to the
following package versions:
Ubuntu 6.06 LTS:
Ubuntu 8.04 LTS:
After a standard system upgrade you need to restart any applications using OpenSSL, especially Apache, to effect the necessary changes.