CVE-2022-34749

HIGH8.6EPSS 0.52%

Mistune vulnerable to catastrophic backtracking

發布日:2022/7/26修改日:2026/4/28

也稱為:DEBIAN-CVE-2022-34749

描述

In mistune through 2.0.2, support of inline markup is implemented by using regular expressions that can involve a high amount of backtracking on certain edge cases. This behavior is commonly named catastrophic backtracking.

受影響套件(3)

Debian/mistunefrom 0
PyPI/mistune>= 2.0.0a1, < 2.0.3
PyPI/mistunefrom 0, < a6d43215132fe4f3d93f8d7e90ba83b16a0838b2 | >= 2.0.0a1, < 2.0.3

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:L/VI:L/VA:H/SC:N/SI:N/SA:N
osv	CVSS 3.1	HIGH8.6	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

參考連結(10)

ADVISORYhttps://github.com/advisories/GHSA-fw3v-x4f2-v673
ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2022-34749
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2022-34749
PATCHhttps://github.com/lepture/mistune
WEBhttps://github.com/lepture/mistune/commit/a6d43215132fe4f3d93f8d7e90ba83b16a0838b2
WEBhttps://github.com/lepture/mistune/commit/ca1e7b506850f4e488823fc7338b49a8f9852718
WEBhttps://github.com/lepture/mistune/issues/314#issuecomment-1223972386
WEBhttps://github.com/lepture/mistune/releases
WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/mistune/PYSEC-2022-237.yaml
WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/TQHXITQ2DSBYOILKHXBSBB7PFBPZHF63