CVE-2022-39209

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

15/09/2022

Last modified:

07/11/2023

Description

cmark-gfm is GitHub&#39;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&#39;s autolink extension may lead to unbounded resource exhaustion and subsequent denial of service. Users may verify the patch by running `python3 -c &#39;print("![l"* 100000 + "\n")&#39; | ./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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

6.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:github:cmark-gfm::::::::		0.29.0.gfm.6 (excluding)
cpe:2.3:o:fedoraproject:fedora:35:::::::*
cpe:2.3:o:fedoraproject:fedora:36:::::::*
cpe:2.3:o:fedoraproject:fedora:37:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2022-39209

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools