USN-1003-1: OpenSSL vulnerabilities

7 October 2010

openssl vulnerabilities

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

  • Ubuntu 10.10
  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 9.04
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Summary

Software Description

  • openssl

Details

It was discovered that OpenSSL incorrectly handled return codes from the bn_wexpand function calls. A remote attacker could trigger this flaw in services that used SSL to cause a denial of service or possibly execute arbitrary code with application privileges. This issue only affected Ubuntu 6.06 LTS, 8.04 LTS, 9.04 and 9.10. (CVE-2009-3245)

It was discovered that OpenSSL incorrectly handled certain private keys with an invalid prime. A remote attacker could trigger this flaw in services that used SSL to cause a denial of service or possibly execute arbitrary code with application privileges. The default compiler options for affected releases should reduce the vulnerability to a denial of service. (CVE-2010-2939)

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-1ubuntu4.1
Ubuntu 10.04 LTS
libssl0.9.8 - 0.9.8k-7ubuntu8.3
Ubuntu 9.10
libssl0.9.8 - 0.9.8g-16ubuntu3.3
Ubuntu 9.04
libssl0.9.8 - 0.9.8g-15ubuntu3.6
Ubuntu 8.04 LTS
libssl0.9.8 - 0.9.8g-4ubuntu3.11
Ubuntu 6.06 LTS
libssl0.9.8 - 0.9.8a-7ubuntu0.13

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