medium5.3
CVE-2023-22485
cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C.
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Github | Cmark-Gfm | before 0.29.0.gfm.7 |