libexpat up to 2.4.4 namespace-separator Character xmlparse.c injection

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in libexpat up to 2.4.4. It has been declared as problematic. Affected is an unknown function of the file xmlparse.c of the component namespace-separator Character Handler. Executing a manipulation can lead to injection. This vulnerability is tracked as CVE-2022-25236. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in libexpat up to 2.4.4. It has been declared as problematic. This vulnerability affects some unknown processing of the file xmlparse.c of the component namespace-separator Character Handler. The manipulation with an unknown input leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. The impact remains unknown.

The weakness was disclosed 02/16/2022. The advisory is shared for download at github.com. This vulnerability was named CVE-2022-25236 since 02/16/2022. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1055.

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 2.4.5 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). 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: 5.5
VulDB Meta Temp Score: 5.3

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

CVSSv2info

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

Exploitinginfo

Class: Injection
CWE: CWE-74 / CWE-707 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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 2.4.5
Patch: github.com

Timelineinfo

02/16/2022 🔍
02/16/2022 +0 days 🔍
02/16/2022 +0 days 🔍
05/20/2025 +1189 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2022-25236 (🔍)
GCVE (CVE): GCVE-0-2022-25236
GCVE (VulDB): GCVE-100-193192

Entryinfo

Created: 02/16/2022 08:18
Updated: 05/20/2025 18:17
Changes: 02/16/2022 08:18 (39), 02/18/2022 16:09 (1), 05/20/2025 18:17 (16)
Complete: 🔍
Cache ID: 216::103

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