HTTP response splitting in Cisco Secure Email and Web Manager and Cisco AsyncOS for Cisco Email Security Appliance - CVE-2022-20772

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Main Vulnerability Database Vulnerabilities #VU68970

HTTP response splitting in Cisco Secure Email and Web Manager and Cisco AsyncOS for Cisco Email Security Appliance - CVE-2022-20772

Published: November 4, 2022


Vulnerability identifier: #VU68970
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-20772
CWE-ID: CWE-113
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Secure Email and Web Manager
Cisco AsyncOS for Cisco Email Security Appliance

Detailed vulnerability description

The vulnerability allows a remote attacker to perform HTTP splitting attacks.

The vulnerability exists due to software does not corrector process CRLF character sequences. A remote attacker can send specially crafted request containing CRLF sequence and make the application to send a split HTTP response.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.


How to mitigate CVE-2022-20772

Install updates from vendor's website.

Sources