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Cisco ONS 15454 Controller Card Denial of Service Vulnerability

Cisco-SA-20131203-CVE-2013-6703 · Medium · Published · Updated

A vulnerability in the TLS/SSLv3 module of the Cisco ONS 15454 Controller Cards could allow an unauthenticated, remote attacker to cause the control card to reset. The vulnerability is due to improper validation of the TLS/SSLv3 packets. An attacker could exploit this vulnerability by sending a specific set of packets to the control card. An exploit could allow the attacker to trigger the control card to reset. Cisco has confirmed the vulnerability in a security notice; however, software updates are not available. To exploit this vulnerability, an attacker likely would need access to trusted, internal networks to send TLS/SSLv3 packets to the targeted device. This access requirement may reduce the possibility 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.

Cisco advisory · CSAF JSON

Workarounds

Administrators are advised to contact the vendor regarding future updates and releases.

Administrators are advised to allow only trusted users to have network access.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators are advised to monitor affected systems.

CVEsCVE-2013-6703
Cisco Bug IDsCSCuh34787
CVSS ScoreBase 4.3
Base 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P/E:F/RL:U/RC:C
Product Names From Source
Cisco ONS 15454 System Software

Related Products

Product CVE Evidence
Cisco ONS 15454 System Software CVE-2013-6703 Cisco OpenVuln