Vulnerability Monitor

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CVE-2021-20270

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.

Published

2021-03-23T17:15:13.827

Last Modified

2024-11-21T05:46:15.097

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-835
  • Type: Primary
    CWE-835
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application pygments pygments ≤ 2.7.3 Yes
Application redhat openshift_container_platform 3.11 Yes
Application redhat openshift_container_platform 4.0 Yes
Application redhat openstack_platform 10.0 Yes
Application redhat software_collections - Yes
Operating System redhat enterprise_linux 7.0 Yes
Operating System redhat enterprise_linux 8.0 Yes
Operating System fedoraproject fedora 33 Yes
Operating System debian debian_linux 9.0 Yes
Operating System debian debian_linux 10.0 Yes
References