CVE-2023-22485

Published on: Not Yet Published

Last Modified on: 02/02/2023 02:11:00 PM UTC

CVE-2023-22485 - advisory for GHSA-c944-cv5f-hpvr

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

Certain versions of Cmark-gfm from Github contain the following vulnerability:

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. In versions prior 0.29.0.gfm.7, a crafted markdown document can trigger an out-of-bounds read in the `validate_protocol` function. We believe this bug is harmless in practice, because the out-of-bounds read accesses `malloc` metadata without causing any visible damage.This vulnerability has been patched in 0.29.0.gfm.7.

CVE-2023-22485 has been assigned by security-adviso[email protected] to track the vulnerability - currently rated as MEDIUM severity.
Affected Vendor/Software: github - cmark-gfm version = < 0.29.0.gfm.7

CVSS3 Score: 5.3 - MEDIUM

Attack Vector ^ⓘ	Attack Complexity	Privileges Required	User Interaction
NETWORK	LOW	NONE	NONE
Scope	Confidentiality Impact	Integrity Impact	Availability Impact
UNCHANGED	LOW	NONE	NONE

CVE References

Description	Tags ^ⓘ	Link
out-of-bounds read in validate_protocol · Advisory · github/cmark-gfm · GitHub	github.com text/html	MISC github.com/github/cmark-gfm/security/advisories/GHSA-c944-cv5f-hpvr

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There are currently no QIDs associated with this CVE

Exploit/POC from Github

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. In versions prior 0…

Known Affected Configurations (CPE V2.3)

Type	Vendor	Product	Version	Update	Edition	Language
Application	Github	Cmark-gfm	All	All	All	All

cpe:2.3:a:github:cmark-gfm:*:*:*:*:*:*:*:*:

No vendor comments have been submitted for this CVE

Social Mentions

Source	Title	Posted (UTC)
@CVEreport	CVE-2023-22485 : cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C.… twitter.com/i/web/status/1…	2023-01-24 01:03:50
/r/netcve	CVE-2023-22485	2023-01-24 01:40:24