Vulnerability CVE-2013-4287
Published: 2013-10-17   Modified: 2013-10-18

Description:
Algorithmic complexity vulnerability in Gem::Version::VERSION_PATTERN in lib/rubygems/version.rb in RubyGems before 1.8.23.1, 1.8.24 through 1.8.25, 2.0.x before 2.0.8, and 2.1.x before 2.1.0, as used in Ruby 1.9.0 through 2.0.0p247, allows remote attackers to cause a denial of service (CPU consumption) via a crafted gem version that triggers a large amount of backtracking in a regular expression.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
RubyGems 2.0.7 Algorithmic complexity vulnerability
Eric Hodel
11.09.2013

Type:

CWE-310

 (Cryptographic Issues)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Rubygems -> Rubygems 
Ruby-lang -> RUBY 
Redhat -> Enterprise linux 

 References:
http://blog.rubygems.org/2013/09/09/CVE-2013-4287.html
http://rhn.redhat.com/errata/RHSA-2013-1427.html
http://rhn.redhat.com/errata/RHSA-2013-1441.html
http://rhn.redhat.com/errata/RHSA-2013-1523.html
http://rhn.redhat.com/errata/RHSA-2013-1852.html
http://rhn.redhat.com/errata/RHSA-2014-0207.html
http://www.openwall.com/lists/oss-security/2013/09/10/1
https://puppet.com/security/cve/cve-2013-4287
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