An unauthenticated, remote attacker could exploit this vulnerability to gain root-level access and have complete control of an affected device.
This vulnerability is due to the presence of an undocumented test interface on Cisco Unified 3905 Phones.
An unauthenticated, remote attacker could exploit this vulnerability by connecting to the undocumented test interface on a targeted device. If successful, the attacker could gain root-level access on the targeted device, which could be used to conduct further attacks.
Administrators are advised to apply the appropriate updates.
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.
Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via email at firstname.lastname@example.org.
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