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Gmane
From: Tyler Hicks <tyhicks <at> canonical.com>
Subject: [USN-1582-1] RubyGems vulnerabilities
Newsgroups: gmane.linux.ubuntu.security.announce
Date: Wednesday 26th September 2012 02:23:13 UTC (over 4 years ago)
==========================================================================
Ubuntu Security Notice USN-1582-1
September 26, 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

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

References:
  http://www.ubuntu.com/usn/usn-1582-1
  CVE-2012-2125, CVE-2012-2126

Package Information:
  https://launchpad.net/ubuntu/+source/rubygems/1.8.15-1ubuntu0.1
 
CD: 3ms