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GMS-2023-1110: Commonmarker vulnerable to to several quadratic complexity bugs that may lead to denial of service

April 11, 2023

Several quadratic complexity bugs in commonmarker’s underlying cmark-gfm library may lead to unbounded resource exhaustion and subsequent denial of service.

References

  • github.com/advisories/GHSA-48wp-p9qv-4j64
  • github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.10
  • github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.11
  • github.com/gjtorikian/commonmarker/pull/236
  • github.com/gjtorikian/commonmarker/releases/tag/v0.23.9
  • github.com/gjtorikian/commonmarker/security/advisories/GHSA-48wp-p9qv-4j64

Code Behaviors & Features

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Affected versions

All versions before 0.23.9

Fixed versions

  • 0.23.9

Solution

Upgrade to version 0.23.9 or above.

Source file

gem/commonmarker/GMS-2023-1110.yml

Spotted a mistake? Edit the file on GitLab.

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