CVE-2011-3009

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-08-05 · updated 2026-06-16
Weakness: CWE-310

Description

Ruby before 1.8.6-p114 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.

Affected products

Ruby: through 1.8.6; 1.8.6-p110, 1.8.6-p36

References

http://redmine.ruby-lang.org/issues/show/4338
http://rhn.redhat.com/errata/RHSA-2012-0070.html
http://www.openwall.com/lists/oss-security/2011/07/20/1
http://www.redhat.com/support/errata/RHSA-2011-1581.html
http://www.securityfocus.com/bid/49126
https://exchange.xforce.ibmcloud.com/vulnerabilities/69157
http://redmine.ruby-lang.org/issues/show/4338
http://rhn.redhat.com/errata/RHSA-2012-0070.html
http://www.openwall.com/lists/oss-security/2011/07/20/1
http://www.redhat.com/support/errata/RHSA-2011-1581.html
http://www.securityfocus.com/bid/49126
https://exchange.xforce.ibmcloud.com/vulnerabilities/69157

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