CVE-2012-4259

Vulnerability

A persistent cross-site scripting (XSS) vulnerability exists in the contacts module of C4B XPhone UC Web version 4.1.890SR1 (and possibly earlier versions). The company name field is not properly sanitized, allowing an attacker to inject arbitrary script code. The injection can be performed via a connected groupware application such as Microsoft Outlook or IBM Lotus Notes that synchronizes contact data with the XPhone system [1].

Exploitation

An attacker with the ability to modify contact information through a connected groupware application can inject malicious script into the company name field. When other users search for or view details of the manipulated contact, the injected script executes in their browser. No authentication is required for the victim; the attack is triggered automatically upon viewing the contact [1].

Impact

Successful exploitation allows the attacker to execute arbitrary HTML and JavaScript in the context of the victim's browser. This can lead to information disclosure, session hijacking, or other client-side attacks. The attacker does not gain direct server-side access but can compromise user sessions and data [1].

Mitigation

No official patch or fixed version is mentioned in the available references. The vendor may have released an update after the disclosure date (2012-04-24), but it is not confirmed. As a workaround, administrators should sanitize input fields and consider disabling groupware synchronization if not essential. This vulnerability is not listed on the CISA Known Exploited Vulnerabilities (KEV) catalog [1].