Cisco Virtualized Voice Browser Cross-Site Scripting Vulnerability

Vulnerability

A cross-site scripting (XSS) vulnerability exists in the web-based management interface of Cisco Virtualized Voice Browser (CVVB) [1]. The issue stems from insufficient validation of user-supplied input by the management interface [1]. Affected versions include CVVB releases earlier than Release 12.6(1) [1].

Exploitation

An unauthenticated, remote attacker can exploit this vulnerability by persuading a user of an affected interface to click a crafted link [1]. The attacker does not require authentication or network access beyond reaching the web-based interface [1]. The user must interact with the link, which may be delivered via email, messaging, or other means [1].

Impact

Successful exploitation allows the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information [1]. This can lead to disclosure of session tokens, cookies, or other data stored in the browser, potentially enabling further compromise [1].

Mitigation

Cisco has released software updates to address this vulnerability; the recommended fixed version is Cisco Virtualized Voice Browser Release 12.6(1) and later [1]. No workarounds are available [1]. Customers should upgrade to the fixed release per the Cisco advisory [1].