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Vulnerability · Published Mar 28, 2023 · Assigned by GitHub_M

CVE-2023-28626Quadratic runtime when parsing Markdown in comrak

Medium 5.3

In plain English

A medium-severity uncontrolled resource consumption in comrak from kivikakk. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)1.1%top 33.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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`

Affected products (as reported)

VendorProductVersions
kivikakk comrak < 0.17.0

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References