rexml Gem up to 3.3.0 on Ruby resource consumption

Summaryinfo

A vulnerability classified as problematic has been found in rexml Gem up to 3.3.0 on Ruby. This affects an unknown part. This manipulation causes resource consumption. The identification of this vulnerability is CVE-2024-39908. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in rexml Gem up to 3.3.0 on Ruby and classified as problematic. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. The summary by CVE is:

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.1 has some DoS vulnerabilities when it parses an XML that has many specific characters such as ``. If you need to parse untrusted XMLs, you many be impacted to these vulnerabilities. The REXML gem 3.3.2 or later include the patches to fix these vulnerabilities. Users are advised to upgrade. Users unable to upgrade should avoid parsing untrusted XML strings.

The advisory is shared at github.com. This vulnerability is known as CVE-2024-39908 since 07/02/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 207950 (Rocky Linux 8 : ruby:3.3 (RLSA-2024:6784)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.3.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (207950) and CERT Bund (WID-SEC-2024-1720). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

• Debian Linux
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• Gentoo Linux
• SUSE openSUSE
• RESF Rocky Linux
• Open Source Ruby
• IBM License Metric Tool
• IBM DB2

Productinfo

Type

• Ruby Gem

Name

• rexml Gem

Version

• 3.0
• 3.1
• 3.2
• 3.3.0

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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