CVE-2021-35492 Denial of service in n/a
An authenticated attacker can exhaust filesystem resources via the vhost parameter, causing the streaming server to become unresponsive.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-35492?
CVE-2021-35492 is a medium-severity denial of service vulnerability in n/a, published on 5 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Wowza Streaming Engine through 4.8.11+5 could allow an authenticated, remote attacker to exhaust filesystem resources via the /enginemanager/server/vhost/historical.jsdata vhost parameter. This is due to the insufficient management of available filesystem resources. An attacker could exploit this vulnerability through the Virtual Host Monitoring section by requesting random virtual-host historical data and exhausting available filesystem resources. A successful exploit could allow the attacker to cause database errors and cause the device to become unresponsive to web-based management. (Manual intervention is required to free filesystem resources and return the application to an operational state.)
Weakness: CWE-770
Which versions are affected by CVE-2021-35492?
It affects 1 product.
Products include Wowza Streaming Engine.
How do I fix CVE-2021-35492?
No fix has been published for CVE-2021-35492 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-2021-35492 being exploited?
There is no known exploitation of CVE-2021-35492 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as GHSA-wvh2-2vcc-8h4x.