Rewterz Threat Advisory – Multiple Cisco Small Business SPA500 Series IP Phones Vulnerabilities

Severity

Medium

Analysis Summary

CVE-2023-20181 CVSS:6.1

Cisco Small Business SPA500 Series IP Phones are vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the web-based management interface. 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-2023-20218 CVSS:5.8

Cisco Small Business SPA500 Series IP Phones are vulnerable to HTML injection. A remote attacker could inject malicious HTML code in the web-based management interface, which when viewed, would be executed in the victim’s Web browser within the security context of the hosting site to show malicious content and/or redirect users to a malicious URL.

Impact

• Cross-Site Scripting
• Unauthorized Access

Indicators Of Compromise

CVE

• CVE-2023-20181
• CVE-2023-20218

Affected Vendors

Cisco

Affected Products

• Cisco Small Business SPA500 Series IP Phones

Remediation

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

Cisco Security Advisory