CVE-2022-24724

 

Published at: - 03-03-2022 09:15

Last modified: - 18-04-2022 08:37

Total changes: - 8

Description

cmark-gfm is GitHub's extended version of the C reference implementation of CommonMark. Prior to versions 0.29.0.gfm.3 and 0.28.3.gfm.21, an integer overflow in cmark-gfm's table row parsing `table.c:row_from_string` may lead to heap memory corruption when parsing tables who's marker rows contain more than UINT16_MAX columns. The impact of this heap corruption ranges from Information Leak to Arbitrary Code Execution depending on how and where `cmark-gfm` is used. If `cmark-gfm` is used for rendering remote user controlled markdown, this vulnerability may lead to Remote Code Execution (RCE) in applications employing affected versions of the `cmark-gfm` library. This vulnerability has been patched in the following cmark-gfm versions 0.29.0.gfm.3 and 0.28.3.gfm.21. A workaround is available. The vulnerability exists in the table markdown extensions of cmark-gfm. Disabling the table extension will prevent this vulnerability from being triggered.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x
• FEDORA-2022-557ad15f2e-Mailing List, Third Party Advisory
• FEDORA-2022-bc43bafcfd-Mailing List, Third Party Advisory
• FEDORA-2022-725edc74c0-Mailing List, Third Party Advisory
• FEDORA-2022-79b9a59e3b-Third Party Advisory
• FEDORA-2022-c42d02e5e5-Third Party Advisory
• FEDORA-2022-1f981071eb-Third Party Advisory
• http://packetstormsecurity.com/files/166599/cmark-gfm-Integer-overflow.html

 

Keywords

NVD

 

CVE-2022-24724

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures