CVE-2024-49761

REXML ReDoS vulnerability

Description

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;). This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. The REXML gem 3.3.9 or later include the patch to fix the vulnerability.

Category

6.6
CVSS
Severity: Medium
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.36%
Vendor Advisory ruby-lang.org
Affected: ruby rexml
Published at:
Updated at:

References

Link Tags
https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m third party advisory
https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f patch
https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761 vendor advisory
https://security.netapp.com/advisory/ntap-20241227-0004/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2024-49761?
CVE-2024-49761 has been scored as a medium severity vulnerability.
How to fix CVE-2024-49761?
To fix CVE-2024-49761, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-49761 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-49761 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-49761?
CVE-2024-49761 affects ruby rexml.
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