CVE-2021-21728 Denial of service in ZXA10 C300M
An attacker can cause denial of service by flooding a default open port on ZTE ZXA10 C300M devices, reducing system processing capabilities.
- 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-2021-21728?
CVE-2021-21728 is a medium-severity denial of service vulnerability in ZXA10 C300M, published on 9 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A ZTE product has a configuration error vulnerability. Because a certain port is open by default, an attacker can consume system processing resources by flushing a large number of packets to the port, and successfully exploiting this vulnerability could reduce system processing capabilities. This affects: ZXA10 C300M all versions up to V4.3P8.
Weakness: CWE-400
Which versions are affected by CVE-2021-21728?
It affects 1 product.
Products include Zte Zxa10 C300m Firmware.
How do I fix CVE-2021-21728?
No fix has been published for CVE-2021-21728 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-2021-21728 being exploited?
There is no known exploitation of CVE-2021-21728 in the wild and no public exploit code.
Other vulnerabilities in ZXA10 C300M
Sources
Also known as GHSA-3386-9355-8xp9.