{"id":"PYSEC-2020-176","details":"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.","aliases":["CVE-2019-20477","GHSA-3pqx-4fqf-j49f"],"modified":"2023-11-08T04:01:30.627114Z","published":"2020-02-19T04:15:00Z","references":[{"type":"WEB","url":"https://www.exploit-db.com/download/47655"},{"type":"WEB","url":"https://github.com/yaml/pyyaml/blob/master/CHANGES"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/52N5XS73Z5S4ZN7I7R56ICCPCTKCUV4H/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/33VBUY73AA6CTTYL3LRWHNFDULV7PFPN/"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-3pqx-4fqf-j49f"}],"affected":[{"package":{"name":"pyyaml","ecosystem":"PyPI","purl":"pkg:pypi/pyyaml"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.1"},{"fixed":"5.2b1"}]}],"versions":["5.1","5.1.1","5.1.2"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/pyyaml/PYSEC-2020-176.yaml"}}],"schema_version":"1.7.3"}