Integer Overflow Vulnerability in Expat Library by libexpat
CVE-2022-23990

7.5HIGH

Key Information:

Vendor
Libexpat Project
Status
Libexpat
Vendor
CVE Published:
26 January 2022

Badges

👾 Exploit Exists🟡 Public PoC

Summary

The Expat parser, also known as libexpat, has a security flaw due to an integer overflow condition in the doProlog function in versions prior to 2.4.4. This vulnerability could be exploited by attackers to manipulate the parsing process, potentially leading to undefined behaviors or crashes in applications that rely on this library for XML processing.

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.

external_expat_AOSP10_r33_CVE-2022-23990
Created by Satheesh575555

References

https://github.com/libexpat/libexpat/pull/551
x_refsource_MISC
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisoryx_refsource_FEDORA

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.