// For flags

CVE-2023-22485

cmark-gfm out-of-bounds read in validate_protocol

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

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.

cmmark-gfm es la bifurcación de GitHub de cmark, una librería y programa de análisis y representación de CommonMark en C. En versiones anteriores a la 0.29.0.gfm.7, un documento de rebajas manipulado puede desencadenar una lectura fuera de los límites en la función `validate_protocol` . Creemos que este error es inofensivo en la práctica, porque la lectura fuera de los límites accede a los metadatos "malloc" sin causar ningún daño visible. Esta vulnerabilidad ha sido parcheada en 0.29.0.gfm.7.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
Poc
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2022-12-29 CVE Reserved
  • 2023-01-24 CVE Published
  • 2025-03-10 CVE Updated
  • 2025-03-10 First Exploit
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-91: XML Injection (aka Blind XPath Injection)
  • CWE-125: Out-of-bounds Read
CAPEC
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