Deserialization of Untrusted Data in PyYAML
PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module. NOTE: this issue exists because of an incomplete fix for CVE-2017-18342.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2019-20477US | critical9.8 | — | ||
PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module.… | ||||
02
references
External citations — patches, advisories, analysis.
- https://github.com/advisories/GHSA-3pqx-4fqf-j49fADVISORY
- https://github.com/pypa/advisory-database/tree/main/vulns/pyyaml/PYSEC-2020-176.yamlWEB
- https://github.com/yaml/pyyamlPACKAGE
- https://github.com/yaml/pyyaml/blob/master/CHANGESWEB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/33VBUY73AA6CTTYL3LRWHNFDULV7PFPNWEB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/52N5XS73Z5S4ZN7I7R56ICCPCTKCUV4HWEB
- https://nvd.nist.gov/vuln/detail/CVE-2019-20477ADVISORY
- https://www.exploit-db.com/download/47655WEB
scry
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan