Improper access control in PyYAML - CVE-2019-20477
Published: February 24, 2020
Vulnerability identifier: #VU25542
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-20477
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: The YAML Project
Affected software:
PyYAML
PyYAML
Detailed vulnerability description
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in the "load" and "load_all" functions. A remote attacker can bypass implemented security restrictions and gain unauthorized access to the application.
How to mitigate CVE-2019-20477
Install updates from vendor's website.