CVEvulnerability
CVE-2020-14343
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2021-02-09
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-20
Description
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.
Affected configurations
• pyyaml pyyaml (>= 5.1 < 5.4)
• oracle communications cloud native core network function cloud native environment 1.10.0
• oracle communications cloud native core network function cloud native environment 22.1.0
Related
Weakness · CWE (1)
- CWE-20 Improper Input Validation weakness
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1860466 Issue Tracking, Third Party Advisory
- https://github.com/SeldonIO/seldon-core/issues/2252 github.com
- https://github.com/yaml/pyyaml/issues/420 github.com
- https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1860466 Issue Tracking, Third Party Advisory
- https://github.com/SeldonIO/seldon-core/issues/2252 github.com
- https://github.com/yaml/pyyaml/issues/420 github.com
- https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory