VDB-193320 · CVE-2022-25313 · Nessus 236567

libexpat up to 2.4.4 DTD Element build_model resource consumption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.9	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in libexpat up to 2.4.4. The affected element is the function build_model of the component DTD Element Handler. The manipulation results in resource consumption. This vulnerability is known as CVE-2022-25313. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in libexpat up to 2.4.4. Affected is the function build_model of the component DTD Element Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability.

The weakness was published 02/18/2022. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2022-25313 since 02/18/2022. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236567 (Alibaba Cloud Linux 3 : 0183: mingw-expat (ALINUX3-SA-2022:0183)), 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 (236567). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

libexpat

Version

Website

Product: https://github.com/libexpat/libexpat/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 236567
Nessus Name: Alibaba Cloud Linux 3 : 0183: mingw-expat (ALINUX3-SA-2022:0183)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libexpat 2.4.5
Patch: github.com

Timelineinfo

02/18/2022 🔍
02/18/2022 +0 days 🔍
02/18/2022 +0 days 🔍
05/30/2025 +1197 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2022-25313 (🔍)
GCVE (CVE): GCVE-0-2022-25313
GCVE (VulDB): GCVE-100-193320

Entryinfo

Created: 02/18/2022 09:08
Updated: 05/30/2025 23:29
Changes: 02/18/2022 09:08 (40), 02/19/2022 14:44 (1), 05/21/2025 21:09 (16), 05/30/2025 23:29 (19)
Complete: 🔍
Cache ID: 216::103

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