Stored cross-site scripting in Cisco AsyncOS for Secure Email and Web Manager and Cisco AsyncOS for Secure Web Appliance - CVE-2024-20256

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Main Vulnerability Database Vulnerabilities #VU89581

Stored cross-site scripting in Cisco AsyncOS for Secure Email and Web Manager and Cisco AsyncOS for Secure Web Appliance - CVE-2024-20256

Published: May 16, 2024


Vulnerability identifier: #VU89581
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2024-20256
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the web-based management interface. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


Affected software

Cisco AsyncOS for Secure Email and Web Manager
Cisco AsyncOS for Secure Web Appliance

How to mitigate CVE-2024-20256

Install updates from vendor's website.

Cisco AsyncOS for Secure Email and Web Manager - update to 15.5.1-024
Cisco AsyncOS for Secure Web Appliance - addressed in versions 14.5.2-011, 15.0.0-355

External References

Related Security Bulletins