CVE-2023-28626

Quadratic runtime when parsing Markdown in comrak

CVSS 5.3 MEDIUMEPSS 1.1%CWE-400

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 1.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

28 Mar 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

comrak is a CommonMark + GFM compatible Markdown parser and renderer written in rust. A range of quadratic parsing issues are present in Comrak. These can be used to craft denial-of-service attacks on services that use Comrak to parse Markdown. This issue has been addressed in version 0.17.0. Users are advised to upgrade. There are no known workarounds for this vulnerability. This issue is also tracked as `GHSL-2023-047`

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

kivikakk · comrak

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://github.com/kivikakk/comrak/commit/ce795b7f471b01589f842dc09af38b025701178d https://github.com/kivikakk/comrak/security/advisories/GHSA-8hqf-xjwp-p67v 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/