Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 28.5%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1922136
- https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html
- https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html
- https://www.debian.org/security/2021/dsa-4889
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1922136
- https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html
- https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html
- https://www.debian.org/security/2021/dsa-4889
- https://www.oracle.com/security-alerts/cpuoct2021.html
Products affected by CVE-2021-20270
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cpe:2.3:a:pygments:pygments:1.5
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cpe:2.3:a:pygments:pygments:1.6
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cpe:2.3:a:pygments:pygments:2.0
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cpe:2.3:a:pygments:pygments:2.0.1
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cpe:2.3:a:redhat:openshift_container_platform:3.11
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cpe:2.3:a:redhat:openshift_container_platform:4.0
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cpe:2.3:a:redhat:openstack_platform:10.0
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cpe:2.3:a:redhat:software_collections:-
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:debian:debian_linux:9.0
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cpe:2.3:o:fedoraproject:fedora:33
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cpe:2.3:o:redhat:enterprise_linux:7.0
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cpe:2.3:o:redhat:enterprise_linux:8.0