VDB
CVE-2020-14343
CVE-2020-14343
PUBLISHED
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 13.70% · 94.4th percentile
Risk Scores
EPSS Score
13.70%
94.4th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | pyyaml | 0, 5.1.2-1build1, 5.3-1ubuntu2 |
Exploit Intelligence
- A web application vulnerable to CVE-2020-14343 insecure deserialization leading to command execution in PyYAML package. (github-poc-repo)
- A web application vulnerable to CVE-2020-14343 insecure deserialization leading to command execution in PyYAML package. (github-poc-repo)
- A web application vulnerable to CVE-2020-14343 insecure deserialization leading to command execution in PyYAML package. (github-poc-repo)
- A web application vulnerable to CVE-2020-14343 insecure deserialization leading to command execution in PyYAML package. (github-poc-repo)
- A web application vulnerable to CVE-2020-14343 insecure deserialization leading to command execution in PyYAML package. (github-poc-repo)
- A web application vulnerable to CVE-2020-14343 insecure deserialization leading to command execution in PyYAML package. (github-poc-repo)
- A web application vulnerable to CVE-2020-14343 insecure deserialization leading to command execution in PyYAML package. (github-poc-repo)
- A web application vulnerable to CVE-2020-14343 insecure deserialization leading to command execution in PyYAML package. (github-poc-repo)
- A web application vulnerable to CVE-2020-14343 insecure deserialization leading to command execution in PyYAML package. (github-poc-repo)
- A web application vulnerable to CVE-2020-14343 insecure deserialization leading to command execution in PyYAML package. (github-poc-repo)
…and 130 more exploits
Timeline
- CVE Published
- Oct 23, 2018 PoC Published
- Apr 14, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Jul 26, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Mar 7, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-14343 third-party-advisory
- https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load(input)-Deprecation third-party-advisory
- https://ubuntu.com/security/notices/USN-4940-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-14343 third-party-advisory