by Kastro
Paper/Archive/CVE-2020-14343

CVE-2020-14343

redhat — A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it…

EPSS 6%CVSS 9.8
critical.is priorityof 100
48
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 93.3.933 × 2018.7No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
PyYAMLPyYAML 5.4–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refgithub.com/yaml/pyyaml/issues/420refbugzilla.redhat.com/show_bug.cgi?id=1860466reforacle.com/security-alerts/cpuapr2022.htmlreforacle.com/security-alerts/cpujul2022.htmlrefgithub.com/SeldonIO/seldon-core/issues/2252