libexpat up to 2.4.2 xmlparse.c addBinding integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in libexpat up to 2.4.2. This issue affects the function addBinding of the file xmlparse.c. Executing a manipulation can lead to integer overflow. This vulnerability is tracked as CVE-2022-22822. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in libexpat up to 2.4.2. It has been declared as critical. This vulnerability affects the function addBinding of the file xmlparse.c. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 01/10/2022. The advisory is shared for download at github.com. This vulnerability was named CVE-2022-22822 since 01/08/2022. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 213995 (Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 : xmltok library vulnerabilities (USN-7199-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.4.3 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (213995). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 213995
Nessus Name: Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 : xmltok library vulnerabilities (USN-7199-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libexpat 2.4.3
Patch: github.com

Timelineinfo

01/08/2022 🔍
01/10/2022 +2 days 🔍
01/10/2022 +0 days 🔍
05/06/2025 +1212 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2022-22822 (🔍)
GCVE (CVE): GCVE-0-2022-22822
GCVE (VulDB): GCVE-100-189952

Entryinfo

Created: 01/10/2022 21:15
Updated: 05/06/2025 02:57
Changes: 01/10/2022 21:15 (40), 01/13/2022 09:06 (1), 01/13/2025 16:42 (16), 05/06/2025 02:57 (19)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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