Stack-based buffer overflow in IP Phone 7800 Series and Cisco IP Phone 8800 Series - CVE-2022-20968
Published: December 8, 2022
Vulnerability identifier: #VU70068
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-20968
CWE-ID: CWE-121
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
IP Phone 7800 Series
Cisco IP Phone 8800 Series
IP Phone 7800 Series
Cisco IP Phone 8800 Series
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing Cisco Discovery Protocol packets. A remote attacker on the local network can send specially crafted packets to the affected device, trigger a stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2022-20968
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
The vendor plans to release firmware upgrade in January 2023.