USN-884-1: OpenSSL vulnerability

Ubuntu Security Notice USN-884-1

13th January, 2010

openssl vulnerability

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

  • Ubuntu 9.10
  • Ubuntu 9.04
  • Ubuntu 8.10
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Software description

  • openssl

Details

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.

Update instructions

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

Ubuntu 9.10:
libssl0.9.8 0.9.8g-16ubuntu3.1
Ubuntu 9.04:
libssl0.9.8 0.9.8g-15ubuntu3.4
Ubuntu 8.10:
libssl0.9.8 0.9.8g-10.1ubuntu2.6
Ubuntu 8.04 LTS:
libssl0.9.8 0.9.8g-4ubuntu3.9
Ubuntu 6.06 LTS:
libssl0.9.8 0.9.8a-7ubuntu0.11

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

After a standard system upgrade you need to restart any applications
using OpenSSL, especially Apache, to effect the necessary changes.

References

CVE-2009-4355