Vulnerability · Published Nov 18, 2020 · Assigned by cisco

CVE-2020-3482Cisco Expressway Software Unauthorized Access Information Disclosure Vulnerability

Medium 6.5

In plain English

A medium-severity improper access control in Cisco TelePresence Video Communication Server (VCS) Expressway from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities).

Severity (CVSS 3.0)6.5Medium

Exploit odds (30 days)1.4%top 27.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco TelePresence Video Communication Server (VCS) Expressway	n/a

Weakness: CWE-284 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References

20201118 Cisco Expressway Software Unauthorized Access Information Disclosure Vulnerability vendor-advisory, x_refsource_CISCO