Use-After-Free Vulnerability in Expat XML Parser from Libexpat
CVE-2022-40674

8.1HIGH

Key Information:

Vendor
Libexpat Project
Status
Libexpat
Vendor
CVE Published:
14 September 2022

Summary

The Expat XML Parser library, specifically its version prior to 2.4.9, contains a use-after-free vulnerability within the doContent function in xmlparse.c. This flaw can potentially be exploited to cause crashes or execute arbitrary code in affected applications using the library. Users are advised to update to the latest version to mitigate any potential risks associated with this vulnerability.

References

https://github.com/libexpat/libexpat/pull/629
https://github.com/libexpat/libexpat/pull/640
https://www.debian.org/security/2022/dsa-5236
vendor-advisory

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.