CVE-2020-3321 Cisco Webex Network Recording Player and Cisco Webex Player Denial of Service Vulnerability
An attacker can cause a denial of service in Cisco Webex Player by tricking a user into opening a malicious recording file.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-3321?
CVE-2020-3321 is a low-severity denial of service vulnerability in Cisco Webex Network Recording Player, published on 3 Jun 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A vulnerability in Cisco Webex Network Recording Player and Cisco Webex Player for Microsoft Windows could allow an attacker to cause a process crash resulting in a Denial of service (DoS) condition for the player application on an affected system. The vulnerability exists due to insufficient validation of certain elements with a Webex recording stored in either the Advanced Recording Format (ARF) or the Webex Recording Format (WRF). An attacker could exploit this vulnerability by sending a user a malicious ARF or WRF file through a link or email attachment and persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to cause the Webex player application to crash when trying to view the malicious file.
Weakness: CWE-20
Which versions are affected by CVE-2020-3321?
It affects 2 products.
Products include Cisco Webex Network Recording Player, Cisco Webex Player.
How do I fix CVE-2020-3321?
No fix has been published for CVE-2020-3321 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-3321 being exploited?
There is no known exploitation of CVE-2020-3321 in the wild and no public exploit code.
Other vulnerabilities in Cisco Webex Network Recording Player
Sources
Also known as GHSA-8365-p8mj-x9vj.