CVE-2019-1684: A vulnerability in the Cisco Discovery Protocol or Link Layer Discovery Protocol (LLDP) implementation for the Cisco IP Phone 7800 and 8800 Series could allow…

medium6.5CVSS 3.1

AVAACLPRNUINSUCNINAH

A vulnerability in the Cisco Discovery Protocol or Link Layer Discovery Protocol (LLDP) implementation for the Cisco IP Phone 7800 and 8800 Series could allow an unauthenticated, adjacent attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. The vulnerability is due to missing length validation of certain Cisco Discovery Protocol or LLDP packet header fields. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol or LLDP packet to the targeted phone. A successful exploit could allow the attacker to cause the affected phone to reload unexpectedly, resulting in a temporary DoS condition. Versions prior to 12.6(1)MN80 are affected.

Affected

16 ranges

Vendor	Product	Version range	Fixed in
cisco	cisco_ip_phone_8800_series_software	>= unspecified < 12.6(1)MN80	12.6(1)MN80
cisco	ip_conference_phone_7832_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_conference_phone_8832_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_phone_7800_and_8800_series_cisco_discovery_protocol_and_link_layer_discovery	—	—
cisco	ip_phone_7800_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_phone_7811_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_phone_7821_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_phone_7841_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_phone_7861_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_phone_8800_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_phone_8811_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_phone_8841_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_phone_8845_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_phone_8851_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_phone_8861_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80
cisco	ip_phone_8865_firmware	< 12.6\(1\)mn80	12.6\(1\)mn80