CVE-2022-39209
Assigner: GitHub_M
Published: 2022-09-15T00:00:00
State: PUBLISHED
title: Uncontrolled Resource Consumption in cmark-gfm
descriptions: value: cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. In versions prior to 0.29.0.gfm.6 a polynomial time complexity issue in cmark-gfm's autolink extension may lead to unbounded resource exhaustion and subsequent denial of service. Users may verify the patch by running `python3 -c 'print("![l"* 100000 + "\n")' | ./cmark-gfm -e autolink`, which will resource exhaust on unpatched cmark-gfm but render correctly on patched cmark-gfm. This vulnerability has been patched in 0.29.0.gfm.6. Users are advised to upgrade. Users unable to upgrade should disable the use of the autolink extension.
affected: vendor: github
product: cmark-gfm
versions: version: < 0.29.0.gfm.6
status: affected
metrics: cvssV3_1: version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
problemTypes: descriptions: type: CWE
description: CWE-400: Uncontrolled Resource Consumption
cweId: CWE-400
source: advisory: GHSA-cgh3-p57x-9q7q
discovery: UNKNOWN