CVE-2020-14343

CRITICAL9.8EPSS 13.7%

Improper Input Validation in PyYAML

發布日:2021/3/25修改日:2026/2/4

也稱為:GHSA-8q59-q68h-6hv4ALPINE-CVE-2020-14343DEBIAN-CVE-2020-14343PYSEC-2021-142

描述

A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747.

受影響套件(4)

Alpine/py3-yamlfrom 0, < 5.3.1-r1
Debian/pyyamlfrom 0, < 5.3.1-4
PyPI/pyyamlfrom 0, < 5.4
PyPI/pyyamlfrom 0, < 5.4

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:H/VI:H/VA:H/SC:N/SI:N/SA:N
osv	CVSS 3.1	CRITICAL9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

描述

受影響套件(4)

CVSS 分數

參考連結(14)