GHSA-5r3x-p7xx-x6q5

Source

https://github.com/advisories/GHSA-5r3x-p7xx-x6q5

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/03/GHSA-5r3x-p7xx-x6q5/GHSA-5r3x-p7xx-x6q5.json

Aliases

• CVE-2023-28631

Published

2023-03-28T14:45:28Z

Modified

2023-11-08T04:12:12.683398Z

Details

Impact

A Comrak AST can be constructed manually by a program instead of parsing a Markdown document with parse_document. This AST can then be converted to HTML via html::format_document_with_plugins. However, the HTML formatting code assumes that the AST is well-formed. For example, many AST notes contain [u8] fields which the formatting code assumes is valid UTF-8 data. Several bugs can be triggered if this is not the case.

Patches

0.17.0 contains adjustments to the AST, storing strings instead of unvalidated byte arrays.

Workarounds

• Validate UTF-8 correctness of all data when assigning to &[u8] and Vec<u8> fields in the AST.

References

n/a

References

• https://github.com/kivikakk/comrak/security/advisories/GHSA-5r3x-p7xx-x6q5
• https://nvd.nist.gov/vuln/detail/CVE-2023-28631
• https://github.com/kivikakk/comrak/commit/9ff5f8df0ac951f5742d22a72c39b89a15f56639
• https://github.com/kivikakk/comrak
• https://github.com/kivikakk/comrak/releases/tag/0.17.0
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OUYME2VA555X6567H7ORIJQFN4BVGT6N
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PTWZWCT7KCX2KTXTLPUYZ3EHOONG4X46
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VQ3UBC7LE4VPCMZBTADIBL353CH7CPVV