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CVE-2011-2931

4.3 · MEDIUM

Cross-site scripting (XSS) vulnerability in the strip_tags helper in actionpack/lib/action_controller/vendor/html-scanner/html/node.rb in Ruby on Rails before 2.3.13, 3.0.x before 3.0.10, and 3.1.x…

Published Aug 29, 2011rubyonrailsCWE-79EPSS 2.49%

Overview

CVE-2011-2931 is a medium-severity vulnerability affecting rubyonrails rails. It was published on August 29, 2011 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Cross-site scripting (XSS) vulnerability in the strip_tags helper in actionpack/lib/action_controller/vendor/html-scanner/html/node.rb in Ruby on Rails before 2.3.13, 3.0.x before 3.0.10, and 3.1.x before 3.1.0.rc5 allows remote attackers to inject arbitrary web script or HTML via a tag with an invalid name.

Remediation

Check the references section for vendor advisories and patches from rubyonrails. Update rails 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

References

Refgroups.google.com/group/rubyonrails-security/msg/fd41ab62966e0fd1?dmode=source&output=gplainReflists.fedoraproject.org/pipermail/package-announce/2011-September/065109.htmlReflists.fedoraproject.org/pipermail/package-announce/2011-September/065137.htmlReflists.fedoraproject.org/pipermail/package-announce/2011-September/065212.htmlRefsecunia.com/advisories/45921Refweblog.rubyonrails.org/2011/8/16/ann-rails-3-1-0-rc6Refwww.debian.org/security/2011/dsa-2301Refwww.openwall.com/lists/oss-security/2011/08/17/1Refwww.openwall.com/lists/oss-security/2011/08/19/11Refwww.openwall.com/lists/oss-security/2011/08/20/1

How CyberStrike helps

Frequently asked questions

What is CVE-2011-2931?

CVE-2011-2931 is a medium-severity vulnerability affecting rubyonrails rails. It was published on August 29, 2011 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2011-2931?

This vulnerability has a CVSS 2.0 base score of 4.3, 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-2011-2931?

Check the references section for vendor advisories and patches from rubyonrails. Update rails 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-2011-2931?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-2931 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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