GHSA-8hqf-xjwp-p67v

Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/03/GHSA-8hqf-xjwp-p67v/GHSA-8hqf-xjwp-p67v.json

Aliases

• CVE-2023-28626

Published

2023-03-28T14:40:29Z

Modified

2023-03-28T23:08:31Z

Details

Impact

A range of quadratic parsing issues from cmark/cmark-gfm are also present in Comrak. These can be used to craft denial-of-service attacks on services that use Comrak to parse Markdown.

Patches

0.17.0 contains fixes to known quadratic parsing issues.

Workarounds

n/a

References

• https://github.com/commonmark/cmark/issues/255
• https://github.com/commonmark/cmark/issues/389
• https://github.com/commonmark/cmark/issues/373
• https://github.com/commonmark/cmark/issues/299
• https://github.com/commonmark/cmark/issues/388
• https://github.com/commonmark/cmark/issues/284
• https://github.com/commonmark/cmark/issues/218
• https://github.com/commonmark/cmark/pull/232
• https://github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L63-L65
• https://github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L87-L89

References

• https://github.com/kivikakk/comrak/security/advisories/GHSA-8hqf-xjwp-p67v
• https://nvd.nist.gov/vuln/detail/CVE-2023-28626
• https://github.com/commonmark/cmark/issues/218
• https://github.com/commonmark/cmark/issues/255
• https://github.com/commonmark/cmark/issues/284
• https://github.com/commonmark/cmark/issues/299
• https://github.com/commonmark/cmark/issues/373
• https://github.com/commonmark/cmark/issues/388
• https://github.com/commonmark/cmark/issues/389
• https://github.com/commonmark/cmark/pull/232
• https://github.com/kivikakk/comrak/commit/ce795b7f471b01589f842dc09af38b025701178d
• https://github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L63-L65
• https://github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L87-L89
• 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/