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pygments における脆弱性
Title pygments における脆弱性
Summary

pygments には、不特定の脆弱性が存在します。

Possible impacts サービス運用妨害 (DoS) 状態にされる可能性があります。
Solution

ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date Jan. 11, 2021, midnight
Registration Date Dec. 2, 2021, 6:04 p.m.
Last Update Dec. 2, 2021, 6:04 p.m.
CVSS3.0 : 重要
Score 7.5
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS2.0 : 警告
Score 5
Vector AV:N/AC:L/Au:N/C:N/I:N/A:P
Affected System
Pygments
Pygments 1.1+
Pygments 2.7.4 未満
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
Change Log
No Changed Details Date of change
1 [2021年12月02日]
  掲載		 Dec. 2, 2021, 6:04 p.m.
NVD Vulnerability Information
CVE-2021-27291
Summary

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.

Publication Date March 17, 2021, 10:15 p.m.
Registration Date March 18, 2021, 10:03 a.m.
Last Update Nov. 21, 2024, 2:57 p.m.
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:pygments:pygments:*:*:*:*:*:*:*:* 1.1 2.7.4
Configuration2 or higher or less more than less than
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List