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Cisco Unified Presence Server Cross-Site Scripting Vulnerability

Cisco-SA-20150624-CVE-2015-4220 · Medium · Published · Updated

A vulnerability in the Cisco Unified Presence Server could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web interface of the affected system. The vulnerability is due to insufficient input validation of a user-supplied value. An attacker could exploit this vulnerability by convincing a user to click a specific link. A successful exploit could allow the attacker to execute arbitrary script or HTML code in the user's session, which could be used to access sensitive browser-based information. Cisco has confirmed the vulnerability and released software updates. To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions to persuade the user to follow the provided link. Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.

Cisco advisory ·CSAF JSON

Workarounds

Administrators are advised to apply the appropriate updates.

Users should verify that unsolicited links are safe to follow.

For additional information about XSS attacks and the methods used to exploit these vulnerabilities, see the Cisco Applied Mitigation Bulletin Understanding Cross-Site Scripting (XSS) Threat Vectorshttp://www.cisco.com/c/en/us/support/docs/cmb/cisco-amb-20060922-understanding-xss.html .

Administrators are advised to monitor affected systems.

CVEsCVE-2015-4220
Cisco Bug IDsCSCuq03773
CVSS ScoreBase 4.3
Base 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N/E:F/RL:OF/RC:C
Product Names From Source
Cisco Unified Presence Server

Related Products

Product CVE Evidence
Cisco Unified Presence Server CVE-2015-4220 Cisco OpenVuln