CVE-2020-3482 Cisco Expressway Software Unauthorized Access Information Disclosure Vulnerability
Unauthenticated attackers can bypass security controls to send traffic to restricted destinations, gaining unauthorized network access.
- 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-2020-3482?
CVE-2020-3482 is a medium-severity vulnerability in Cisco TelePresence Video Communication Server (VCS) Expressway, published on 18 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the Traversal Using Relays around NAT (TURN) server component of Cisco Expressway software could allow an unauthenticated, remote attacker to bypass security controls and send network traffic to restricted destinations. The vulnerability is due to improper validation of specific connection information by the TURN server within the affected software. An attacker could exploit this issue by sending specially crafted network traffic to the affected software. A successful exploit could allow the attacker to send traffic through the affected software to destinations beyond the application, possibly allowing the attacker to gain unauthorized network access.
Which versions are affected by CVE-2020-3482?
It affects 2 products.
Products include Cisco Expressway, Cisco Telepresence Video Communication Server.
How do I fix CVE-2020-3482?
No fix has been published for CVE-2020-3482 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-3482 being exploited?
There is no known exploitation of CVE-2020-3482 in the wild and no public exploit code.
Other vulnerabilities in Cisco TelePresence Video Communication Server (VCS) Expressway
- CVE-2024-20252 Cross-site request forgery in Cisco TelePresence Video Communication Server (VCS) Expressway
- CVE-2024-20254 Cross-site request forgery in Cisco TelePresence Video Communication Server (VCS) Expressway
- CVE-2022-20812 Cisco Expressway Series and Cisco TelePresence Video Communication Server Vulnerabilities
- CVE-2022-20813 Cisco Expressway Series and Cisco TelePresence Video Communication Server Vulnerabilities
- CVE-2017-3790 Denial of service in Cisco Expressway Series Software and Cisco TelePresence VCS Software All versions prior to version X8.8.2 are vulnerable
Sources
Also known as GHSA-r379-mpqq-hxmh.