Cisco Jabber Extensible Communications Platform contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. Updates are available.
A vulnerability in the Connection Manager component of Cisco Jabber Extensible Communications Platform (Jabber XCP) could allow an unauthenticated, remote attacker to crash the login connection manager service.
The vulnerability is due to insufficient checking of received login data. An attacker could exploit this vulnerability by sending a corrupted stream of login packets.
Cisco has confirmed the vulnerability in a security notice and software updates are available.
At the time this alert was first published, Cisco Jabber XCP version 8.6 was vulnerable. Later versions of Cisco Jabber XCP may also be affected.
To exploit the vulnerability, an attacker may need access to trusted, internal networks to send a series of corrupted login packets to the targeted system. This access requirement may reduce the likelihood of a successful attack.
Customers are advised to review the bug report in the vendor announcements section for a current list of affected versions.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
An unauthenticated, remote attacker could exploit this vulnerability to cause the login connection manager service to crash, resulting in a denial of service (DoS) condition.
The vulnerability is due to insufficient validation of user-supplied input processed by the Connection Manager component of the affected software.
An unauthenticated, remote attacker could exploit this vulnerability by sending a series of crafted login packets to a targeted device. If successful, the attacker could cause the login connection manager service to crash, which could delay a legitimate user from logging in to the affected software, resulting in a DoS condition.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to monitor affected systems.
Cisco customers with active contracts should contact their Cisco support team for assistance in upgrading to a software version that includes fixes for this vulnerability. Cisco customers without contracts may contact the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via e-mail at firstname.lastname@example.org for assistance.
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