CVE-2019-20477

Source

https://nvd.nist.gov/vuln/detail/CVE-2019-20477

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20477.json

Aliases

• GHSA-3pqx-4fqf-j49f
• PYSEC-2020-176

Related

• ALSA-2020:4641
• RLSA-2020:4641

Published

2020-02-19T04:15:10Z

Modified

2023-11-08T04:01:30.627114Z

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.

References

• https://www.exploit-db.com/download/47655
• https://github.com/yaml/pyyaml/blob/master/CHANGES
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/33VBUY73AA6CTTYL3LRWHNFDULV7PFPN/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/52N5XS73Z5S4ZN7I7R56ICCPCTKCUV4H/