libexpat up to 2.4.3 XML_GetBuffer 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, which was classified as critical, was found in libexpat up to 2.4.3. Affected by this vulnerability is the function XML_GetBuffer. The manipulation results in integer overflow. This vulnerability is identified as CVE-2022-23852. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in libexpat up to 2.4.3. Affected is the function XML_GetBuffer. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 01/24/2022. The advisory is available at github.com. This vulnerability is traded as CVE-2022-23852 since 01/24/2022. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 236603 (Alibaba Cloud Linux 3 : 0021: expat (ALINUX3-SA-2022:0021)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.4.4 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 (236603). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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

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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: 236603
Nessus Name: Alibaba Cloud Linux 3 : 0021: expat (ALINUX3-SA-2022:0021)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libexpat 2.4.4
Patch: github.com

Timelineinfo

01/24/2022 🔍
01/24/2022 +0 days 🔍
01/24/2022 +0 days 🔍
05/20/2025 +1212 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2022-23852 (🔍)
GCVE (CVE): GCVE-0-2022-23852
GCVE (VulDB): GCVE-100-191466

Entryinfo

Created: 01/24/2022 07:34
Updated: 05/20/2025 18:17
Changes: 01/24/2022 07:34 (39), 01/27/2022 14:42 (1), 05/06/2025 04:53 (33), 05/20/2025 18:17 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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