VDB
CVE-2020-14343
CVE-2020-14343
PUBLISHED
CVSS 9.800000190734863 CRITICAL
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.
EPSS 5.98% · 93.2th 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
5.98%
93.2th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Azure | defender | |
| Ubuntu:20.04:LTS | pyyaml | 0, 5.1.2-1build1, 5.3-1ubuntu2 |
| Azure | storage |
Timeline
- Oct 23, 2018 PoC Published
- Feb 9, 2021 CVE Published
- Apr 14, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Jul 4, 2022 EPSS Score
- Jul 26, 2022 EPSS Score
- Nov 8, 2022 EPSS Score
- Mar 7, 2023 EPSS Score
References
- https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load(input)-Deprecation third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-14343 third-party-advisory
- https://ubuntu.com/security/CVE-2020-14343 advisory
- https://ubuntu.com/security/notices/USN-4940-1 advisory