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CVE-2013-1857

4.3 · MEDIUM

The sanitize helper in lib/action_controller/vendor/html-scanner/html/sanitizer.rb in the Action Pack component in Ruby on Rails before 2.3.18, 3.0.x and 3.1.x before 3.1.12, and 3.2.x before 3.2.1…

Published Mar 19, 2013redhatCWE-79EPSS 1.85%

Overview

CVE-2013-1857 is a medium-severity vulnerability affecting redhat enterprise_linux. It was published on March 19, 2013 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

The sanitize helper in lib/action_controller/vendor/html-scanner/html/sanitizer.rb in the Action Pack component in Ruby on Rails before 2.3.18, 3.0.x and 3.1.x before 3.1.12, and 3.2.x before 3.2.13 does not properly handle encoded : (colon) characters in URLs, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted scheme name, as demonstrated by including a : sequence.

Remediation

Check the references section for vendor advisories and patches from redhat. Update enterprise_linux 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
rubyonrailsruby_on_rails0Affected

References

Reflists.apple.com/archives/security-announce/2013/Jun/msg00000.htmlReflists.apple.com/archives/security-announce/2013/Oct/msg00006.htmlReflists.opensuse.org/opensuse-updates/2013-04/msg00072.htmlReflists.opensuse.org/opensuse-updates/2013-04/msg00073.htmlReflists.opensuse.org/opensuse-updates/2014-01/msg00013.htmlRefrhn.redhat.com/errata/RHSA-2013-0698.htmlRefrhn.redhat.com/errata/RHSA-2014-1863.htmlRefsupport.apple.com/kb/HT5784Refweblog.rubyonrails.org/2013/3/18/SEC-ANN-Rails-3-2-13-3-1-12-and-2-3-18-have-been-released/Refgroups.google.com/group/rubyonrails-security/msg/78b9817a5943f6d6?dmode=source&output=gplain

How CyberStrike helps

Frequently asked questions

What is CVE-2013-1857?

CVE-2013-1857 is a medium-severity vulnerability affecting redhat enterprise_linux. It was published on March 19, 2013 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2013-1857?

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-2013-1857?

Check the references section for vendor advisories and patches from redhat. Update enterprise_linux 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-2013-1857?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-1857 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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