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GitHub Advisory DatabaseGHSA-8HQF-XJWP-P67V

HistoryMar 28, 2023 - 2:40 p.m.

Comrak vulnerable to quadratic runtime issues when parsing Markdown (GHSL-2023-047)

2023-03-2814:40:29

CWE-400

GitHub Advisory Database

github.com

comrak

quadratic parsing issues

denial-of-service

patches

markdown

vulnerable

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.002

Percentile

60.1%

JSON

Impact

A range of quadratic parsing issues from cmark/cmark-gfm are also present in Comrak. These can be used to craft denial-of-service attacks on services that use Comrak to parse Markdown.

Patches

0.17.0 contains fixes to known quadratic parsing issues.

Workarounds

n/a

References

Affected configurations

Vulners

Node

comrak_projectcomrakRange<0.17.0rust

VendorProductVersionCPE
comrak_projectcomrak*cpe:2.3:a:comrak_project:comrak:*:*:*:*:*:rust:*:*

Vendor	Product	Version	CPE
comrak_project	comrak	*	cpe:2.3:a:comrak_project:comrak::::::rust::*

References

github.com/advisories/GHSA-8hqf-xjwp-p67v

github.com/commonmark/cmark/issues/218

github.com/commonmark/cmark/issues/255

github.com/commonmark/cmark/issues/284

github.com/commonmark/cmark/issues/299

github.com/commonmark/cmark/issues/373

github.com/commonmark/cmark/issues/388

github.com/commonmark/cmark/issues/389

github.com/commonmark/cmark/pull/232

github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L63-L65

github.com/github/cmark-gfm/blob/c32ef78bae851cb83b7ad52d0fbff880acdcd44a/test/pathological_tests.py#L87-L89

github.com/kivikakk/comrak/commit/ce795b7f471b01589f842dc09af38b025701178d

github.com/kivikakk/comrak/releases/tag/0.17.0

github.com/kivikakk/comrak/security/advisories/GHSA-8hqf-xjwp-p67v

lists.fedoraproject.org/archives/list/[email protected]/message/OUYME2VA555X6567H7ORIJQFN4BVGT6N/

lists.fedoraproject.org/archives/list/[email protected]/message/PTWZWCT7KCX2KTXTLPUYZ3EHOONG4X46/

lists.fedoraproject.org/archives/list/[email protected]/message/VQ3UBC7LE4VPCMZBTADIBL353CH7CPVV/

nvd.nist.gov/vuln/detail/CVE-2023-28626

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.002

Percentile

60.1%

JSON

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