CVE-2021-27291

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-27291
In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular expressions have exponential or cubic worst-case complexity and are vulnerable to ReDoS. By crafting malicious input, an attacker can cause a denial of service.

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ce Exploit Third Party Advisory
https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14 Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00024.html Mailing List Third Party Advisory
https://www.debian.org/security/2021/dsa-4878
https://www.debian.org/security/2021/dsa-4889
https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/
Configurations

Configuration 1 (hide)

cpe:2.3:a:pygments:pygments:*:*:*:*:*:*:*:*
History

06 May 2021, 14:15

Type Values Removed Values Added
References
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/ -
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/ -

05 May 2021, 08:15

Type Values Removed Values Added
References
  • (MLIST) https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html -

11 Apr 2021, 12:15

Type Values Removed Values Added
References
  • (DEBIAN) https://www.debian.org/security/2021/dsa-4889 -

30 Mar 2021, 00:15

Type Values Removed Values Added
References
  • (DEBIAN) https://www.debian.org/security/2021/dsa-4878 -

24 Mar 2021, 02:03

Type Values Removed Values Added
References (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00024.html - (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00024.html - Mailing List, Third Party Advisory
References (MISC) https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14 - (MISC) https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14 - Patch, Third Party Advisory
References (MISC) https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ce - (MISC) https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ce - Exploit, Third Party Advisory
CWE NVD-CWE-Other
CPE cpe:2.3:a:pygments:pygments:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 5.0
v3 : 7.5

19 Mar 2021, 21:15

Type Values Removed Values Added
References
  • (MLIST) https://lists.debian.org/debian-lts-announce/2021/03/msg00024.html -

17 Mar 2021, 13:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-03-17 13:15

Updated : 2021-05-06 23:15

NVD link : CVE-2021-27291

Mitre link : CVE-2021-27291

JSON object : View

Products Affected

pygments

  • pygments
CWE
NVD-CWE-Other