#VU60481 Incorrect Regular Expression in Palo Alto PAN-OS - CVE-2022-0011
Published: February 9, 2022
Vulnerability identifier: #VU60481
Vulnerability risk: Medium
CVSSv4.0: 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/E:U/U:Green
CVE-ID: CVE-2022-0011
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Palo Alto PAN-OS
Palo Alto PAN-OS
Software vendor:
Palo Alto Networks, Inc.
Palo Alto Networks, Inc.
Description
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.
Remediation
Install updates from vendor's website.