Cisco ONS 15454 Controller Card Denial of Service Vulnerability

A vulnerability in the session termination function of the Cisco ONS 15454 Controller Cards could allow an authenticated, remote attacker to cause the control card to reset.

The vulnerability is due to an uninitialized pointer. An attacker could exploit this vulnerability by closing sessions in a specific manner. An exploit could allow the attacker to trigger the control card to reset.

Cisco has confirmed the vulnerability in a security notice and released software updates.

To exploit this vulnerability, an attacker must authenticate to an affected device. This access requirement reduces the likelihood of a successful exploit.

Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.