CVE-2021-26813

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 03-03-2021 05:15

Last modified: - 23-05-2022 06:00

Total changes: - 4

Description

markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.

Common Vulnerability Scoring System (CVSS)

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

Low

Attack complexity

Network

Attack vector

High

Availability

None

Confidentiality

None

Integrity

None

Privileges required

Unchanged

Scope

None

User interaction

7.5

Base score

3.9

3.6

Exploitability score

Impact score

Verification logic

vendor=markdown2_project AND product=markdown2 AND versionStartIncluding=1.0.1.18 AND versionEndExcluding=2.4.0

vendor=fedoraproject AND product=fedora AND version=32

vendor=fedoraproject AND product=fedora AND version=33

vendor=fedoraproject AND product=fedora AND version=34

Reference

https://github.com/trentm/python-markdown2/pull/387
FEDORA-2021-0337384e41-Mailing List, Third Party Advisory
FEDORA-2021-e235a0da4a-Mailing List, Third Party Advisory
FEDORA-2021-77191478ad-Mailing List, Third Party Advisory

Keywords

CVE-2021-26813

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2021-26813

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures