PT-2011-4190 · Ruby+1 · Ruby On Rails+1

Sascha Depold · Published 2011-08-29 · Updated 2019-08-08 · CVE-2011-2931

Positive Technologies (AI Summary)

CVSS v2.0

4.3

Medium

Base vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions Ruby on Rails versions prior to 2.3.13 Ruby on Rails versions 3.0.x prior to 3.0.10 Ruby on Rails versions 3.1.x prior to 3.1.0.rc5

Description A cross-site scripting (XSS) issue exists in the strip tags helper, allowing remote attackers to inject arbitrary web script or HTML via a tag with an invalid name. This can be achieved by exploiting the strip tags helper in actionpack/lib/action controller/vendor/html-scanner/html/node.rb.

Recommendations For Ruby on Rails versions prior to 2.3.13, update to version 2.3.13 or later. For Ruby on Rails versions 3.0.x prior to 3.0.10, update to version 3.0.10 or later. For Ruby on Rails versions 3.1.x prior to 3.1.0.rc5, update to version 3.1.0.rc5 or later. As a temporary workaround, consider restricting the use of the strip tags helper until a patch is available.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2011-2931

DSA-2301-1

GHSA-V5JG-558J-Q67C

Affected Products

Ruby On Rails

Suse

References · 23

• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2011-2931.yml · Exploit
• https://github.com/rails/rails/commit/586a944ddd4d03e66dea1093306147594748037a · Patch
• http://groups.google.com/group/rubyonrails-security/msg/fd41ab62966e0fd1?dmode=source&output=gplain · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2011-2931 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2011-2931 · Security Note
• http://openwall.com/lists/oss-security/2011/08/22/13 · Patch
• http://openwall.com/lists/oss-security/2011/08/20/1 · Patch
• http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065109.html · Vendor Advisory
• http://openwall.com/lists/oss-security/2011/08/17/1 · Patch
• http://openwall.com/lists/oss-security/2011/08/22/5 · Patch
• https://osv.dev/vulnerability/CVE-2011-2931 · Vendor Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065212.html · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=731436 · Patch
• http://debian.org/security/2011/dsa-2301 · Vendor Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065137.html · Vendor Advisory