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CVE-2011-2705

5.0 · MEDIUM

The SecureRandom.random_bytes function in lib/securerandom.rb in Ruby before 1.8.7-p352 and 1.9.x before 1.9.2-p290 relies on PID values for initialization, which makes it easier for context-depend…

Published Aug 5, 2011ruby-langCWE-20EPSS 2.25%

Overview

CVE-2011-2705 is a medium-severity vulnerability affecting ruby-lang ruby. It was published on August 5, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The SecureRandom.random_bytes function in lib/securerandom.rb in Ruby before 1.8.7-p352 and 1.9.x before 1.9.2-p290 relies on PID values for initialization, which makes it easier for context-dependent attackers to predict the result string by leveraging knowledge of random strings obtained in an earlier process with the same PID.

Remediation

Check the references section for vendor advisories and patches from ruby-lang. Update ruby to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
ruby-langruby0Affected

References

Reflists.fedoraproject.org/pipermail/package-announce/2011-July/063062.htmlReflists.fedoraproject.org/pipermail/package-announce/2011-July/063071.htmlRefredmine.ruby-lang.org/issues/4579Refsvn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=32050Refsvn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLogRefsvn.ruby-lang.org/repos/ruby/tags/v1_9_2_290/ChangeLogRefwww.openwall.com/lists/oss-security/2011/07/11/1Refwww.openwall.com/lists/oss-security/2011/07/12/14Refwww.openwall.com/lists/oss-security/2011/07/20/1Refwww.openwall.com/lists/oss-security/2011/07/20/16

How CyberStrike helps

Frequently asked questions

What is CVE-2011-2705?

CVE-2011-2705 is a medium-severity vulnerability affecting ruby-lang ruby. It was published on August 5, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2011-2705?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-2705?

Check the references section for vendor advisories and patches from ruby-lang. Update ruby to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-2705?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-2705 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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