1. Home
  2. Vulnerabilities
  3. CVE-2021-20270

CVE-2021-20270

CVSS v3.1 7.5 (High)
75% Progress
CVSS v2.0 5 (Medium)
50% Progress
EPSS 0.28 % (69th)
0.28% Progress
Affected Products 7
Advisories 21
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the "exception" keyword.

Weaknesses
CWE-835
Loop with Unreachable Exit Condition ('Infinite Loop')
CVE Status
PUBLISHED
CNA
Red Hat, Inc.
Published Date
2021-03-23 17:15:13
(3 years ago)
Updated Date
2021-12-10 17:04:10
(2 years ago)

Affected Products

Debian

Fedoraproject

Pygments

Redhat

Configuration #1

    CPE23 From Up To
  Pygments from 1.5 version and 2.7.3 and prior versions cpe:2.3:a:pygments:pygments >= 1.5 <= 2.7.3

Configuration #2

    CPE23 From Up To
  Redhat Openshift Container Platform 3.11 cpe:2.3:a:redhat:openshift_container_platform:3.11
  Redhat Openshift Container Platform 4.0 cpe:2.3:a:redhat:openshift_container_platform:4.0
  Redhat Openstack Platform 10.0 cpe:2.3:a:redhat:openstack_platform:10.0
  Redhat Software Collections cpe:2.3:a:redhat:software_collections:-
  Redhat Enterprise Linux 7.0 cpe:2.3:o:redhat:enterprise_linux:7.0
  Redhat Enterprise Linux 8.0 cpe:2.3:o:redhat:enterprise_linux:8.0

Configuration #3

    CPE23 From Up To
  Fedoraproject Fedora 33 cpe:2.3:o:fedoraproject:fedora:33

Configuration #4

    CPE23 From Up To
  Debian Linux 9.0 cpe:2.3:o:debian:debian_linux:9.0
  Debian Linux 10.0 cpe:2.3:o:debian:debian_linux:10.0