CVE-2023-22483

cmark-gfm Quadratic complexity bugs may lead to a denial of service

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. Versions prior to 0.29.0.gfm.7 are subject to several polynomial time complexity issues in cmark-gfm that may lead to unbounded resource exhaustion and subsequent denial of service. Various commands, when piped to cmark-gfm with large values, cause the running time to increase quadratically. These vulnerabilities have been patched in version 0.29.0.gfm.7.

cmark-gfm es la bifurcación de GitHub de cmark, una librería y programa de análisis y representación de CommonMark en C. Las versiones anteriores a 0.29.0.gfm.7 están sujetas a varios problemas de complejidad de tiempo polinomial en cmark-gfm que pueden provocar un agotamiento ilimitado de los recursos y posterior denegación del servicio. Varios comandos, cuando se canalizan a cmak-gfm con valores grandes, hacen que el tiempo de ejecución aumente cuadráticamente. Estas vulnerabilidades se han solucionado en la versión 0.29.0.gfm.7.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-12-29 CVE Reserved
2023-01-23 CVE Published
2024-08-02 CVE Updated
2024-08-02 First Exploit
2024-08-15 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-400: Uncontrolled Resource Consumption
CWE-407: Inefficient Algorithmic Complexity

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://github.com/github/cmark-gfm/security/advisories/GHSA-29g3-96g3-jg6c	2024-08-02

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Github Search vendor "Github"		Cmark-gfm Search vendor "Github" for product "Cmark-gfm"				< 0.29.0.gfm.7 Search vendor "Github" for product "Cmark-gfm" and version " < 0.29.0.gfm.7"		-		Affected