USN-1029-1: OpenSSL vulnerabilities

8 December 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 8.04 LTS
  • Ubuntu 6.06 LTS

Summary

Software Description

  • openssl

Details

It was discovered that an old bug workaround in the SSL/TLS server code allowed an attacker to modify the stored session cache ciphersuite. This could possibly allow an attacker to downgrade the ciphersuite to a weaker one on subsequent connections. (CVE-2010-4180)

It was discovered that an old bug workaround in the SSL/TLS server code allowed an attacker to modify the stored session cache ciphersuite. An attacker could possibly take advantage of this to force the use of a disabled cipher. This vulnerability only affects the versions of OpenSSL in Ubuntu 6.06 LTS, Ubuntu 8.04 LTS, and Ubuntu 9.10. (CVE-2008-7270)

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-1ubuntu4.3
Ubuntu 10.04 LTS
libssl0.9.8 - 0.9.8k-7ubuntu8.5
Ubuntu 9.10
libssl0.9.8 - 0.9.8g-16ubuntu3.5
Ubuntu 8.04 LTS
libssl0.9.8 - 0.9.8g-4ubuntu3.13
Ubuntu 6.06 LTS
libssl0.9.8 - 0.9.8a-7ubuntu0.14

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