CVE-2024-43398

Description

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes. If you need to parse untrusted XMLs with tree parser API like REXML::Document.new, you may be impacted to this vulnerability. If you use other parser APIs such as stream parser API and SAX2 parser API, this vulnerability is not affected. The REXML gem 3.3.6 or later include the patch to fix the vulnerability.

How to fix CVE-2024-43398

To remediate CVE-2024-43398, upgrade the affected package to a fixed version below.

• —upgrade to 3.3.9-r0 or later
• —upgrade to 2.7.4-1+deb11u3 or later
• —no fix listed
• —upgrade to 3.3.5-1 or later
• —upgrade to 3.3.6 or later

Is CVE-2024-43398 being exploited?

Low — EPSS is 1.2%, meaning exploitation activity has not been observed at scale.

Affected packages (5)

• from 0, < 3.3.9-r0
• from 0, < 2.7.4-1+deb11u3
• from 0
• from 0, < 3.3.5-1
• from 0, < 3.3.6

CVSS scores

References (11)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2024-43398
• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2024-43398
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2024-43398
• PATCHgithub.com/ruby/rexml
• WEB