CVE-2024-35176

Description

REXML is an XML toolkit for Ruby. The REXML gem before 3.2.6 has a denial of service vulnerability when it parses an XML that has many `<`s in an attribute value. Those who need to parse untrusted XMLs may be impacted to this vulnerability. The REXML gem 3.2.7 or later include the patch to fix this vulnerability. As a workaround, don't parse untrusted XMLs.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ruby2.3	25.10 questing	Not in release
	25.04 plucky	Not in release
	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	16.04 LTS xenial	Fixed 2.3.1-2~ubuntu16.04.16+esm11
ruby2.5	25.10 questing	Not in release
	25.04 plucky	Not in release
	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Fixed 2.5.1-1ubuntu1.16+esm5
ruby2.7	25.10 questing	Not in release
	25.04 plucky	Not in release
	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 2.7.0-5ubuntu1.16
ruby3.0	25.10 questing	Not in release
	25.04 plucky	Not in release
	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Fixed 3.0.2-7ubuntu2.10
	20.04 LTS focal	Not in release
ruby3.2	25.10 questing	Not in release
	25.04 plucky	Not in release
	24.10 oracular	Not in release
	24.04 LTS noble	Fixed 3.2.3-1ubuntu0.24.04.5
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
ruby3.3	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
jruby	25.10 questing	Needs evaluation
	25.04 plucky	Needs evaluation
	24.10 oracular	Ignored end of life, was needs-triage
	24.04 LTS noble	Needs evaluation
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation
	14.04 LTS trusty	Needs evaluation

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Notes

mdeslaur

While this was claimed to be fixed in USN-7091-1 and USN-7091-2, the patch was incomplete. For focal, it was actually fixed in USN-7256-1. For other releases, it was fixed in USN-7418-1.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
ruby2.3	Upstream: 256c888 Upstream: e56ac27 Upstream: 694239f Upstream: 810d228 Upstream: 7712855 Upstream: 370666e Upstream: 0496940 Upstream: 4325835 Upstream: f1df7d1
ruby3.2	Upstream: 694239f Upstream: 810d228 Upstream: 7712855 Upstream: 370666e Upstream: 0496940 Upstream: 4325835 Upstream: f1df7d1

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

Related Ubuntu Security Notices (USN)

USN-7091-1
Ruby vulnerabilities
5 November 2024

USN-7091-2
Ruby vulnerabilities
21 November 2024

USN-7418-1
Ruby vulnerabilities
7 April 2025

USN-7734-1
Ruby vulnerabilities
3 September 2025

USN-7840-1
Ruby vulnerabilities
27 October 2025