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

2023-03-2820:14:27

CWE-400

GitHub_M

www.cve.org

cve-2023

quadratic runtime

comrak

markdown parser

denial-of-service

ghsl-2023-047

vulnerability

upgrade

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

8.6 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

52.8%

JSON

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

CNA Affected

[
  {
    "vendor": "kivikakk",
    "product": "comrak",
    "versions": [
      {
        "version": "< 0.17.0",
        "status": "affected"
      }
    ]
  }
]