CVE-2021-34716 Cisco Expressway Series and TelePresence Video Communication Server Remote Code Execution Vulnerability
Authenticated administrators can upload crafted software images to execute arbitrary code as root on Cisco Expressway and VCS devices.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-34716?
CVE-2021-34716 is a medium-severity vulnerability in Cisco TelePresence Video Communication Server (VCS) Expressway, published on 18 Aug 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability in the web-based management interface of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to execute arbitrary code on the underlying operating system as the root user. This vulnerability is due to incorrect handling of certain crafted software images that are uploaded to the affected device. An attacker could exploit this vulnerability by authenticating to the system as an administrative user and then uploading specific crafted software images to the affected device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system as the root user.
Which versions are affected by CVE-2021-34716?
It affects 2 products.
Products include Cisco Expressway, Cisco Telepresence Video Communication Server.
How do I fix CVE-2021-34716?
No fix has been published for CVE-2021-34716 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-34716 being exploited?
There is no known exploitation of CVE-2021-34716 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-9mxr-mcvr-5xpm.