USN-1582-1: RubyGems vulnerabilities

26 September 2012

rubygems vulnerabilities

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

  • Ubuntu 12.04 LTS

Summary

RubyGems could be made to download and install malicious gem files.

Software Description

  • rubygems - package management framework for Ruby libraries/applications

Details

John Firebaugh discovered that the RubyGems remote gem fetcher did not properly verify SSL certificates. A remote attacker could exploit this to perform a man in the middle attack to alter gem files being downloaded for installation. (CVE-2012-2126)

John Firebaugh discovered that the RubyGems remote gem fetcher allowed redirection from HTTPS to HTTP. A remote attacker could exploit this to perform a man in the middle attack to alter gem files being downloaded for installation. (CVE-2012-2125)

Update instructions

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

Ubuntu 12.04 LTS
rubygems - 1.8.15-1ubuntu0.1

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

In general, a standard system update will make all the necessary changes.

References