CVE-2022-20817 Cisco IP Phone Duplicate Key Vulnerability
An attacker can impersonate a user's phone via machine-in-the-middle attacks due to duplicate cryptographic keys generated during manufacturing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-20817?
CVE-2022-20817 is a high-severity vulnerability in Cisco IP Phones with Multiplatform Firmware, published on 15 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in Cisco Unified IP Phones could allow an unauthenticated, remote attacker to impersonate another user's phone if the Cisco Unified Communications Manager (CUCM) is in secure mode. This vulnerability is due to improper key generation during the manufacturing process that could result in duplicated manufactured keys installed on multiple devices. An attacker could exploit this vulnerability by performing a machine-in-the-middle attack on the secure communication between the phone and the CUCM. A successful exploit could allow the attacker to impersonate another user's phone. This vulnerability cannot be addressed with software updates. There is a workaround that addresses this vulnerability.
Weakness: CWE-338
Which versions are affected by CVE-2022-20817?
It affects 11 products.
Products include Cisco Ata 187 Analog Telephone Adapter Firmware, Cisco Unified Ip Phone 6911 Firmware, Cisco Unified Ip Phone 6921 Firmware, Cisco Unified Ip Phone 6941 Firmware, Cisco Unified Ip Phone 6945 Firmware, Cisco Unified Ip Phone 6961 Firmware and 5 more.
How do I fix CVE-2022-20817?
No fix has been published for CVE-2022-20817 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-20817 being exploited?
There is no known exploitation of CVE-2022-20817 in the wild and no public exploit code.
Sources
Also known as GHSA-83p3-3frh-4fjj.