GHSA-4qw4-jpp4-8gvp – commonmarker

Package

Manager: gem
Name: commonmarker
Vulnerable Version: >=0 <0.23.6

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

EPSS: N/A pctlN/A

Details

Unbounded resource exhaustion in cmark-gfm autolink extension may lead to denial of service ### Impact CommonMarker uses `cmark-gfm` for rendering [Github Flavored Markdown](https://github.github.com/gfm/). A polynomial time complexity issue in cmark-gfm's autolink extension may lead to unbounded resource exhaustion and subsequent denial of service. ### Patches This vulnerability has been patched in the following CommonMarker release: - v0.23.6 ### Workarounds Disable use of the autolink extension. ### References https://github.com/gjtorikian/commonmarker/pull/190 https://github.com/github/cmark-gfm/security/advisories/GHSA-cgh3-p57x-9q7q https://en.wikipedia.org/wiki/Time_complexity ### For more information If you have any questions or comments about this advisory: * Open an issue in [github/cmark-gfm](https://github.com/github/cmark-gfm) ### Acknowledgements We would like to thank [Legit Security](https://www.legitsecurity.com) for reporting this vulnerability.

Metadata

Created: 2022-09-21T18:18:05Z
Modified: 2022-09-21T18:18:05Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-4qw4-jpp4-8gvp/GHSA-4qw4-jpp4-8gvp.json
CWE IDs: ["CWE-400"]
Alternative ID: N/A
Finding: F067
Auto approve: 1