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Red Hat: CVE-2020-5238: CVE-2020-5238 cmark-gfm: Exponential time to parse certain inputs could lead to DoS (Multiple Advisories)

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Red Hat: CVE-2020-5238: CVE-2020-5238 cmark-gfm: Exponential time to parse certain inputs could lead to DoS (Multiple Advisories)

Severity
4
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:P)
Published
07/01/2020
Created
12/19/2023
Added
12/15/2023
Modified
12/15/2023

Description

The table extension in GitHub Flavored Markdown before version 0.29.0.gfm.1 takes O(n * n) time to parse certain inputs. An attacker could craft a markdown table which would take an unreasonably long time to process, causing a denial of service. This issue does not affect the upstream cmark project. The issue has been fixed in version 0.29.0.gfm.1.

Solution(s)

  • redhat-upgrade-pandoc
  • redhat-upgrade-pandoc-common

References

  • CVE-2020-5238
  • RHSA-2021:1972

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