CVE-2023-22485

Description

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.

Related CPE's

References

https://github.com/github/cmark-gfm/security/advisories/GHSA-c944-cv5f-hpvr

CvssV3 impact

CvssV2 impact