CVE-2024-20392: asyncos — Fix

Description

A vulnerability in the web-based management API of Cisco AsyncOS Software for Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to conduct an HTTP response splitting attack. This vulnerability is due to insufficient input validation of some parameters that are passed to the web-based management API of the affected system. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. A successful exploit could allow the attacker to perform cross-site scripting (XSS) attacks, resulting in the execution of arbitrary script code in the browser of the targeted user, or could allow the attacker to access sensitive, browser-based information.

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CVSS v3.1 Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-113 CWE-113

Affected Products

Vendor	Product	Versions
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	asyncos	All
cisco	secure_email_gateway_virtual_appliance_c100v	All
cisco	secure_email_gateway_virtual_appliance_c300v	All
cisco	secure_email_gateway_virtual_appliance_c600v	All
cisco	secure_email_gateway_c195	All
cisco	secure_email_gateway_c395	All
cisco	secure_email_gateway_c695	All

References

Advisories & Patches

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-http-split-GLrnnOwS https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-http-split-GLrnnOwS

Frequently Asked Questions

What is CVE-2024-20392? +

A vulnerability in the web-based management API of Cisco AsyncOS Software for Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to conduct an HTTP response splitting attack. This vulnerability is due to insufficient input validation of some parameters that are passed to the web-based management API of the affected system. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. A successful exploit could allow the attacker to perform cross-site scripting (XSS) attacks, resulting in the execution of arbitrary script code in the browser of the targeted user, or could allow the attacker to access sensitive, browser-based information. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2024-20392? +

CVE-2024-20392 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-20392? +

CVE-2024-20392 affects products from cisco, specifically: asyncos, secure_email_gateway_c195, secure_email_gateway_c395, secure_email_gateway_c695, secure_email_gateway_virtual_appliance_c100v, secure_email_gateway_virtual_appliance_c300v, secure_email_gateway_virtual_appliance_c600v. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-20392? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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