VDB
CVE-2020-1747
CVE-2020-1747
REJECTED
CVSS 9.800000190734863 CRITICAL
A vulnerability was discovered in the PyYAML library in versions before 5.3.1, 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. An attacker could use this flaw to execute arbitrary code on the system by abusing the python/object/new constructor.
EPSS 5.44% · 92.4th 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
5.44%
92.4th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | pyyaml | 0, 5.1.2-1, 5.1.2-1build1 |
Timeline
- Oct 23, 2018 PoC Published
- Mar 24, 2020 CVE Published
- Mar 26, 2021 CVE Updated
- 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 2, 2022 EPSS Score
- Jul 4, 2022 EPSS Score
- Nov 8, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-1747 third-party-advisory
- https://github.com/yaml/pyyaml/pull/386 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-1747 third-party-advisory