Denial of Service Vulnerabilities in REXML XML Toolkit for Ruby
CVE-2024-39908
Key Information:
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What is CVE-2024-39908?
The REXML gem, an XML toolkit for the Ruby programming language, suffers from vulnerabilities that could result in Denial of Service attacks when processing XML strings containing specific characters such as <, 0, and %>. Users of REXML should be aware that versions prior to 3.3.1 lack important security patches. To safeguard against potential exploitation, users are strongly encouraged to upgrade to REXML gem version 3.3.2 or later. For those unable to upgrade immediately, it is recommended to refrain from parsing untrusted XML data to avoid the associated risks.
Affected Version(s)
rexml < 3.3.2
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.