Wiz
Vulnerability DatabaseCVE-2022-22824

CVE-2022-22824: 
Tenable Nessus vulnerability analysis and mitigation

Overview

defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow vulnerability. This vulnerability was discovered in January 2022 and affects the XML parsing functionality in Expat libraries (MITRE CVE, NVD).

Technical details

The vulnerability exists in the defineAttribute function within xmlparse.c file of the Expat library. It is one of several integer overflow vulnerabilities that were discovered and fixed in version 2.4.3. The issue has been assigned a CVSS v3.1 base score of 9.8 (Critical) (Tenable).

Impact

The integer overflow vulnerability could lead to denial of service or potentially the execution of arbitrary code if a malformed XML file is processed (Debian Security).

Mitigation and workarounds

The vulnerability has been fixed in Expat version 2.4.3. Users and organizations should upgrade to this version or later. The fix was implemented through a patch that prevents integer overflows in the defineAttribute function (Github PR). Multiple distributions have released security updates, including Debian (2.2.10-2+deb11u1 for bullseye) and Gentoo (>=2.4.9) (Debian Security, Gentoo Security).

Additional resources

Source: This report was generated using AI

Related Tenable Nessus vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2024-3290HIGH8.2
  • Tenable NessusTenable Nessus
  • cpe:2.3:a:tenable:nessus
NoYesMay 17, 2024
CVE-2025-24914HIGH7.8
  • Tenable NessusTenable Nessus
  • cpe:2.3:a:tenable:nessus
NoYesApr 18, 2025
CVE-2025-24915HIGH7.8
  • Tenable NessusTenable Nessus
  • cpe:2.3:a:tenable:nessus
NoYesMar 21, 2025
CVE-2025-36630HIGH7.1
  • Tenable NessusTenable Nessus
  • nessus
NoYesJul 02, 2025
CVE-2025-36625MEDIUM4.3
  • Tenable NessusTenable Nessus
  • cpe:2.3:a:tenable:nessus
NoYesApr 18, 2025

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Additional Wiz resources

Cloud Vulnerability DB

Cloud Vulnerability DB

A community-led vulnerabilities database

Cloud Threat Landscape

Cloud Threat Landscape

A threat intelligence database

PEACH

PEACH

A tenant isolation framework

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management
Get a demo