Home/CVE/The cross-site scripting (XSS) prevention feature in Ruby on Rails 2.x before 2.3.12, 3.0.x before 3.0.8, and 3.1.x befo
CVE

CVE-2011-2197

The cross-site scripting (XSS) prevention feature in Ruby on Rails 2.x before 2.3.12, 3.0.x before 3.0.8, and 3.1.x befo

The cross-site scripting (XSS) prevention feature in Ruby on Rails 2.x before 2.3.12, 3.0.x before 3.0.8, and 3.1.x before 3.1.0.rc2 does not properly handle mutation of safe buffers, which makes it easier for remote attackers to conduct XSS attacks via crafted strings to an application that uses a problematic string method, as demonstrated by the sub method.

MEDIUM · CVSS 4.3 EPSS 0.00442
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

2
rubyonrails railsall versions
rubyonrails ruby on railsall versions
▤

Affected Packages

2
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
RubyGems actionpack MODERATE fixed in 2.3.12
RubyGems activesupport MODERATE fixed in 2.3.12
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumRuby on Rails Framework Exceptions
▣

Scoring & Timeline

4.3
MEDIUM · CVSS v2 (legacy) · secalert@redhat.com
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:M/Au:N/C:N/I:P/A:N
Published to NVD30 Jun 2011 · 03:55 PM
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://groups.google.com/group/rubyonrails-security/msg/663b600d4471e0d4?dmode=source&output=gplainPatch
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062514.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062090.html
http://openwall.com/lists/oss-security/2011/06/09/2Patch
http://openwall.com/lists/oss-security/2011/06/13/9Patch
http://secunia.com/advisories/44789Vendor Advisory
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