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.
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://lists.debian.org/debian-lts-announce/2021/05/msg00003.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/
https://www.debian.org/security/2021/dsa-4878 Third Party Advisory
https://www.debian.org/security/2021/dsa-4889 Third Party Advisory
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://lists.debian.org/debian-lts-announce/2021/05/msg00003.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/
https://www.debian.org/security/2021/dsa-4878 Third Party Advisory
https://www.debian.org/security/2021/dsa-4889 Third Party Advisory
Configurations

Configuration 1 (hide)

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

Configuration 2 (hide)

OR cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

History

21 Nov 2024, 05:57

Type Values Removed Values Added
References () https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ce - Exploit, Third Party Advisory () https://gist.github.com/b-c-ds/b1a2cc0c68a35c57188575eb496de5ce - Exploit, Third Party Advisory
References () https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14 - Patch, Third Party Advisory () https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14 - Patch, Third Party Advisory
References () https://lists.debian.org/debian-lts-announce/2021/03/msg00024.html - Mailing List, Third Party Advisory () https://lists.debian.org/debian-lts-announce/2021/03/msg00024.html - Mailing List, Third Party Advisory
References () https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html - Mailing List, Third Party Advisory () https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html - Mailing List, Third Party Advisory
References () https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html - Mailing List, Third Party Advisory () https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html - Mailing List, Third Party Advisory
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/ -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/ -
References () https://www.debian.org/security/2021/dsa-4878 - Third Party Advisory () https://www.debian.org/security/2021/dsa-4878 - Third Party Advisory
References () https://www.debian.org/security/2021/dsa-4889 - Third Party Advisory () https://www.debian.org/security/2021/dsa-4889 - Third Party Advisory

07 Nov 2023, 03:31

Type Values Removed Values Added
References
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/', 'name': 'FEDORA-2021-3f975f68c8', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/', 'name': 'FEDORA-2021-166dfc62b2', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSLD67LFGXOX2K5YNESSWAS4AGZIJTUQ/ -
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GSJRFHALQ7E3UV4FFMFU2YQ6LUDHAI55/ -

08 Aug 2023, 14:22

Type Values Removed Values Added
CWE NVD-CWE-Other CWE-1333

Information

Published : 2021-03-17 13:15

Updated : 2024-11-21 05:57


NVD link : CVE-2021-27291

Mitre link : CVE-2021-27291

CVE.ORG link : CVE-2021-27291


JSON object : View

Products Affected

debian

  • debian_linux

fedoraproject

  • fedora

pygments

  • pygments
CWE
CWE-1333

Inefficient Regular Expression Complexity