CVE-2020-5238

2020-07-0123:15:10

Debian Security Bug Tracker

security-tracker.debian.org

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.009

Percentile

83.1%

JSON

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.

OSVersionArchitecturePackageVersionFilename
Debian12allcmark-gfm< 0.29.0.gfm.2-1cmark-gfm_0.29.0.gfm.2-1_all.deb
Debian11allcmark-gfm<= 0.29.0.gfm.0-6cmark-gfm_0.29.0.gfm.0-6_all.deb
Debian999allcmark-gfm< 0.29.0.gfm.2-1cmark-gfm_0.29.0.gfm.2-1_all.deb
Debian13allcmark-gfm< 0.29.0.gfm.2-1cmark-gfm_0.29.0.gfm.2-1_all.deb
Debian12allhaskell-cmark-gfm< 0.2.1+ds1-1haskell-cmark-gfm_0.2.1+ds1-1_all.deb
Debian11allhaskell-cmark-gfm< 0.2.1+ds1-1haskell-cmark-gfm_0.2.1+ds1-1_all.deb
Debian999allhaskell-cmark-gfm< 0.2.1+ds1-1haskell-cmark-gfm_0.2.1+ds1-1_all.deb
Debian13allhaskell-cmark-gfm< 0.2.1+ds1-1haskell-cmark-gfm_0.2.1+ds1-1_all.deb
Debian12allpython-cmarkgfm<= 0.8.0-3python-cmarkgfm_0.8.0-3_all.deb
Debian11allpython-cmarkgfm<= 0.4.2-1python-cmarkgfm_0.4.2-1_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	12	all	cmark-gfm	< 0.29.0.gfm.2-1	cmark-gfm_0.29.0.gfm.2-1_all.deb
Debian	11	all	cmark-gfm	<= 0.29.0.gfm.0-6	cmark-gfm_0.29.0.gfm.0-6_all.deb
Debian	999	all	cmark-gfm	< 0.29.0.gfm.2-1	cmark-gfm_0.29.0.gfm.2-1_all.deb
Debian	13	all	cmark-gfm	< 0.29.0.gfm.2-1	cmark-gfm_0.29.0.gfm.2-1_all.deb
Debian	12	all	haskell-cmark-gfm	< 0.2.1+ds1-1	haskell-cmark-gfm_0.2.1+ds1-1_all.deb
Debian	11	all	haskell-cmark-gfm	< 0.2.1+ds1-1	haskell-cmark-gfm_0.2.1+ds1-1_all.deb
Debian	999	all	haskell-cmark-gfm	< 0.2.1+ds1-1	haskell-cmark-gfm_0.2.1+ds1-1_all.deb
Debian	13	all	haskell-cmark-gfm	< 0.2.1+ds1-1	haskell-cmark-gfm_0.2.1+ds1-1_all.deb
Debian	12	all	python-cmarkgfm	<= 0.8.0-3	python-cmarkgfm_0.8.0-3_all.deb
Debian	11	all	python-cmarkgfm	<= 0.4.2-1	python-cmarkgfm_0.4.2-1_all.deb