CVE-2024-41946: rexml DoS — Fix

Description

REXML is an XML toolkit for Ruby. The REXML gem 3.3.2 has a DoS vulnerability when it parses an XML that has many entity expansions with SAX2 or pull parser API. The REXML gem 3.3.3 or later include the patch to fix the vulnerability.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

Affected Products

Vendor	Product	Versions
ruby-lang	rexml	< 3.3.3

References

Advisories & Patches

https://github.com/ruby/rexml/commit/033d1909a8f259d5a7c53681bcaf14f13bcf0368 https://github.com/ruby/rexml/security/advisories/GHSA-5866-49gr-22v4 https://www.ruby-lang.org/en/news/2024/08/01/dos-rexml-cve-2024-41946

Other References

https://www.ruby-lang.org/en/news/2008/08/23/dos-vulnerability-in-rexml https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html https://security.netapp.com/advisory/ntap-20250117-0007/

Frequently Asked Questions

What is CVE-2024-41946? +

REXML is an XML toolkit for Ruby. The REXML gem 3.3.2 has a DoS vulnerability when it parses an XML that has many entity expansions with SAX2 or pull parser API. The REXML gem 3.3.3 or later include the patch to fix the vulnerability. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2024-41946? +

CVE-2024-41946 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-41946? +

CVE-2024-41946 affects products from ruby-lang, specifically: rexml. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-41946? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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