Rewterz Threat Advisory – Multiple Cisco Secure Email and Web Manager, Email Gateway, and Web Appliance Vulnerabilities

Severity

Medium

Analysis Summary

CVE-2023-20120 CVSS:5.4

Cisco Secure Email and Web Manager, Cisco Secure Email Gateway, and Cisco Secure Web Appliance is vulnerable to cross-site scripting, caused by insufficient validation of user-supplied input by the web-based management interface of Cisco AsyncOS Software. By persuading a user of an affected interface to click a crafted link, a remote authenticated attacker could exploit this vulnerability to inject malicious script into a Web page which would be executed in a victim’s Web browser within the security context of the hosting Web site, once the page is viewed. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.

CVE-2023-20119 CVSS:6.1

Cisco Secure Email and Web Manager is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the web-based management interface of Cisco AsyncOS Software. A remote attacker could exploit this vulnerability using a specially crafted URL to execute script in a victim’s Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.

CVE-2023-20028 CVSS:4.8

Cisco Secure Email and Web Manager and Cisco Secure Web Appliance is vulnerable to cross-site scripting, caused by insufficient validation of user-supplied input by the web-based management interface of Cisco AsyncOS Software. By persuading a user of an affected interface to click a crafted link, a remote authenticated attacker could exploit this vulnerability to inject malicious script into a Web page which would be executed in a victim’s Web browser within the security context of the hosting Web site, once the page is viewed. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.

Impact

• Cross-Site Scripting

Indicators Of Compromise

CVE

• CVE-2023-20120
• CVE-2023-20119
• CVE-2023-20028

Affected Vendors

Cisco

Affected Products

• Cisco Secure Email and Web Manager
• Cisco Secure Web Appliance
• Cisco Secure Email Gateway

Remediation

Refer to Cisco Security Advisory for patch, upgrade or suggested workaround information.

Cisco Security Advisory