USN-805-1: Ruby vulnerabilities

20 July 2009

ruby1.8, ruby1.9 vulnerabilities

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

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

Software Description

  • ruby1.8
  • ruby1.9

Details

It was discovered that Ruby did not properly validate certificates. An attacker could exploit this and present invalid or revoked X.509 certificates. (CVE-2009-0642)

It was discovered that Ruby did not properly handle string arguments that represent large numbers. An attacker could exploit this and cause a denial of service. (CVE-2009-1904)

Update instructions

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

Ubuntu 9.04
libruby1.8 - 1.8.7.72-3ubuntu0.1
libruby1.9 - 1.9.0.2-9ubuntu1.1
ruby1.8 - 1.8.7.72-3ubuntu0.1
ruby1.9 - 1.9.0.2-9ubuntu1.1
Ubuntu 8.10
libruby1.8 - 1.8.7.72-1ubuntu0.2
libruby1.9 - 1.9.0.2-7ubuntu1.2
ruby1.8 - 1.8.7.72-1ubuntu0.2
ruby1.9 - 1.9.0.2-7ubuntu1.2
Ubuntu 8.04 LTS
libruby1.8 - 1.8.6.111-2ubuntu1.3
ruby1.8 - 1.8.6.111-2ubuntu1.3
Ubuntu 6.06 LTS
libruby1.8 - 1.8.4-1ubuntu1.7
ruby1.8 - 1.8.4-1ubuntu1.7

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

In general, a standard system upgrade is sufficient to effect the necessary changes.

References