cmark-gfm out-of-bounds read in validate_protocol
CVE-2023-22485

5.3MEDIUM

Key Information:

Vendor

Github
Status
Cmark-gfm
Vendor
CVE Published:
24 January 2023

What is CVE-2023-22485?

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.

Affected Version(s)

cmark-gfm < 0.29.0.gfm.7

References

https://github.com/github/cmark-gfm/security/advisories/G...
x_refsource_CONFIRM

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.