VDB
CVE-2019-20477
CVE-2019-20477
REJECTED
CVSS 9.800000190734863 CRITICAL
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.
EPSS 5.11% · 92.1th percentile
Risk Scores
CVSS 3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
5.11%
92.1th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | pyyaml | 5.1.2-1, 5.1.2-1build1, 5.3-1ubuntu1 |
Timeline
- Oct 23, 2018 PoC Published
- Feb 19, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 28, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 1, 2022 EPSS Score
- May 3, 2022 EPSS Score
- Jul 5, 2022 EPSS Score
- Nov 8, 2022 EPSS Score
- Jan 10, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2019-20477 third-party-advisory
- https://github.com/yaml/pyyaml/blob/master/CHANGES third-party-advisory
- https://www.exploit-db.com/download/47655 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-20477 third-party-advisory