CVE-2023-20018 Auth bypass in Cisco Session Initiation Protocol (SIP) Software
Unauthenticated remote attackers can bypass authentication on Cisco IP Phones to access restricted parts of the web management interface.
- 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-2023-20018?
CVE-2023-20018 is a high-severity authentication bypass vulnerability in Cisco Session Initiation Protocol (SIP) Software, published on 19 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the web-based management interface of Cisco IP Phone 7800 and 8800 Series Phones could allow an unauthenticated, remote attacker to bypass authentication on an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to access certain parts of the web interface that would normally require authentication.
Which versions are affected by CVE-2023-20018?
It affects 22 products.
Products include Cisco Ip Phone 7800 Firmware, Cisco Ip Phone 7811 Firmware, Cisco Ip Phone 7821 Firmware, Cisco Ip Phone 7832 Firmware, Cisco Ip Phone 7841 Firmware, Cisco Ip Phone 7861 Firmware and 16 more.
How do I fix CVE-2023-20018?
No fix has been published for CVE-2023-20018 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-20018 being exploited?
There is no known exploitation of CVE-2023-20018 in the wild and no public exploit code.
Other vulnerabilities in Cisco Session Initiation Protocol (SIP) Software
Sources
Also known as GHSA-jc6w-v2gh-gqx3.