CVE-2011-2686
MEDIUM severity · CVSS 5 · CWE-310
5CVSS MEDIUM
Summary
Ruby before 1.8.7-p352 does not reset the random seed upon forking, which makes it easier for context-dependent attackers to predict the values of random numbers by leveraging knowledge of the number sequence obtained in a different child process, a related issue to CVE-2003-0900. NOTE: this issue exists because of a regression during Ruby 1.8.6 development.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impact—
Integrity impactNone
Availability impactNone
Exploit probability (EPSS)3%
AV:N/AC:L/Au:N/C:P/I:N/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html ↗
Additional information
- NVD record
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.htmlPatch
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.htmlPatch
- http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=31713Patch
- http://www.openwall.com/lists/oss-security/2011/07/11/1Patch
- http://www.openwall.com/lists/oss-security/2011/07/12/14Patch
- http://www.openwall.com/lists/oss-security/2011/07/20/1Patch
- http://redmine.ruby-lang.org/issues/show/4338
- http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog