CVE-2023-42821
- Reference to the description:
- Description:
- The package `github.com/gomarkdown/markdown` is a Go library for parsing Markdown text and rendering as HTML. Prior to pseudoversion `0.0.0-20230922105210-14b16010c2ee`, which corresponds with commit `14b16010c2ee7ff33a940a541d993bd043a88940`, parsing malformed markdown input with parser that uses parser.Mmark extension could result in out-of-bounds read vulnerability. To exploit the vulnerability, parser needs to have `parser.Mmark` extension set. The panic occurs inside the `citation.go` file on the line 69 when the parser tries to access the element past its length. This can result in a denial of service. Commit `14b16010c2ee7ff33a940a541d993bd043a88940`/pseudoversion `0.0.0-20230922105210-14b16010c2ee` contains a patch for this issue.
- Last updated date:
- 09/26/2023
- Type:
- exploit
- Confidence:
- HIGH
- Date of publishing:
- 09/26/2023
- Reference url to background
https://github.com/gomarkdown/markdown/security/advisories/GHSA-m9xq-6h2j-65r2