CVE-2021-20270

HIGH7.5EPSS 0.22%

Infinite Loop in Pygments

發布日:2021/4/20修改日:2024/10/14

也稱為:GHSA-9w8r-397f-prfhALPINE-CVE-2021-20270PYSEC-2021-140

描述

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.

受影響套件(9)

Alpine/py3-pygmentsfrom 0, < 2.7.4-r0
Debian/mediawikifrom 0, < 1:1.35.2-1
Debian/mediawikifrom 0, < 1:1.27.7-1~deb9u8
Debian/mediawikifrom 0, < 1:1.31.14-1~deb10u1
Debian/pygmentsfrom 0, < 2.7.1+dfsg-2
Debian/pygmentsfrom 0, < 2.2.0+dfsg-1+deb9u1
Debian/pygmentsfrom 0, < 2.3.1+dfsg-1+deb10u1
PyPI/pygments>= 1.5, < 2.7.4
PyPI/pygments>= 1.5, < 2.7.4

CVSS 分數

來源	版本	嚴重程度	向量
osv	CVSS 4.0	—	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
osv	CVSS 3.1	HIGH7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

參考連結(12)

ADVISORYhttps://github.com/advisories/GHSA-9w8r-397f-prfh
ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-20270
ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2021-20270
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2021-20270
PATCHhttps://github.com/pygments/pygments
WEBhttps://bugzilla.redhat.com/show_bug.cgi?id=1922136
WEBhttps://github.com/pygments/pygments/commit/f91804ff4772e3ab41f46e28d370f57898700333
WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/pygments/PYSEC-2021-140.yaml
WEBhttps://lists.debian.org/debian-lts-announce/2021/05/msg00003.html
WEBhttps://lists.debian.org/debian-lts-announce/2021/05/msg00006.html
WEBhttps://www.debian.org/security/2021/dsa-4889
WEBhttps://www.oracle.com/security-alerts/cpuoct2021.html