Incorrect Regular Expression in Palo Alto PAN-OS - CVE-2022-0011
Published: February 9, 2022
Vulnerability identifier: #VU60481
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-0011
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass URL filtration rules.
The vulnerability exists due to an error when processing forward slash (/), asterisk (*) and caret (^) at the end of the hostname inside filtration rules added to the custom URL category list or to an external dynamic list (EDL) in a URL Filtering profile. As a result, unexpected domains can be blocked or allowed, resulting in a potential security issue.
Affected software
Palo Alto PAN-OS
How to mitigate CVE-2022-0011
Install updates from vendor's website.
Palo Alto PAN-OS - addressed in versions 8.1.21, 9.1.12, 10.0.8, 10.1.3