CVE-2022-23516

Description

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah >= 2.2.0, < 2.19.1 uses recursion for sanitizing CDATA sections, making it susceptible to stack exhaustion and raising a SystemStackError exception. This may lead to a denial of service through CPU resource consumption. This issue is patched in version 2.19.1. Users who are unable to upgrade may be able to mitigate this vulnerability by limiting the length of the strings that are sanitized.

How to fix CVE-2022-23516

To remediate CVE-2022-23516, upgrade the affected package to a fixed version below.

• —upgrade to 2.7.0+dfsg-1+deb11u1 or later
• —upgrade to 2.19.1 or later

Is CVE-2022-23516 being exploited?

Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 2.7.0+dfsg-1+deb11u1
• >= 2.2.0, < 2.19.1

CVSS scores

References (8)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2022-23516
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2022-23516
• PATCHgithub.com/flavorjones/loofah
• WEBgithub.com/flavorjones/loofah/commit/86f7f6364491b0099d215db858ecdc0c89ded040