CVE-2020-5238

Denial of service in table parsing in cmark-gfm

Published: Jul 1, 2020Updated: Nov 21, 2024 Sources: CVE List NVDCWE-20

6.5MEDIUM

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-20

Affected Products

github

commercial·US

cmark-gfm

DevTools & CI

github flavored markdown project

oss-projectaka gfm

github flavored markdown

DevTools & CI / artifact-registry

fedoraproject

oss-project·USaka fedora project

fedoraOn-premOS

Operating Systems / linux-distro

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Initial Access

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References

https://github.com/github/cmark-gfm/security/advisories/GHSA-7gc6-9qr5-hc85

github.com

https://github.com/github/cmark-gfm/commit/85d895289c5ab67f988ca659493a64abb5fec7b4

github.com

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TCDHBTUFIOYRIS5HAS6PZNBNMB7IOAX3/

lists.fedoraproject.org

and 2 more references View all →

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