Home / mailings [USN-1582-1] RubyGems vulnerabilities
Posted on 26 September 2012
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==========================================================================
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
