Input validation error in Cisco 8800 Series IP Phones and Cisco 7800 Series IP Phones - CVE-2019-1684
Published: February 22, 2019
Vulnerability identifier: #VU17842
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-1684
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco 8800 Series IP Phones
Cisco 7800 Series IP Phones
Cisco 8800 Series IP Phones
Cisco 7800 Series IP Phones
Detailed vulnerability description
The vulnerability allows an adjacent attacker to perform a denial of service (DoS) attack.
The vulnerability exists in the Cisco Discovery Protocol or Link Layer Discovery Protocol (LLDP) implementation due to missing length validation of certain Cisco Discovery Protocol or LLDP packet header fields. An adjacent attacker can send a malicious Cisco Discovery Protocol or LLDP packet and cause the affected phone to reload unexpectedly, resulting in a temporary DoS condition.
How to mitigate CVE-2019-1684
The vulnerability has been addressed in the versions 12.6(1)MN80, 12.5(1)SR2, 12.5(1)ES1, 12.1(1)SR2.1.