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GoogleOSV:GHSA-8Q59-Q68H-6HV4HistoryMar 25, 2021 - 9:26 p.m.
Improper Input Validation in PyYAML
2021-03-2521:26:26
Google
osv.dev
80
0.006 Low
EPSS
Percentile
77.9%
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.
References
bugzilla.redhat.com/show_bug.cgi?id=1860466
github.com/SeldonIO/seldon-core/issues/2252
github.com/yaml/pyyaml
github.com/yaml/pyyaml/commit/a001f2782501ad2d24986959f0239a354675f9dc
github.com/yaml/pyyaml/issues/420
github.com/yaml/pyyaml/issues/420#issuecomment-663673966
nvd.nist.gov/vuln/detail/CVE-2020-14343
pypi.org/project/PyYAML
www.oracle.com/security-alerts/cpuapr2022.html
www.oracle.com/security-alerts/cpujul2022.html
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