Inconsistent interpretation of HTTP requests in Cisco Adaptive Security Appliance (ASA) - CVE-2022-20713
Published: August 11, 2022
Vulnerability identifier: #VU66392
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-20713
CWE-ID: CWE-444
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Adaptive Security Appliance (ASA)
Cisco Adaptive Security Appliance (ASA)
Detailed vulnerability description
The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.
The vulnerability exists due to improper validation of HTTP requests in the Clientless SSL VPN (WebVPN) component. A remote attacker can trick a victim to visit a malicious website that can pass malicious requests to an ASA device that has the Clientless SSL VPN feature enabled and conduct browser-based attacks.
How to mitigate CVE-2022-20713
Install updates from vendor's website.