CVE-2021-21889 Memory corruption in Lantronix
An authenticated attacker can trigger a stack-based buffer overflow in the Web Manager Ping functionality to achieve remote code execution.
- 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-2021-21889?
CVE-2021-21889 is a critical memory corruption vulnerability in Lantronix, published on 22 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A stack-based buffer overflow vulnerability exists in the Web Manager Ping functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU). A specially crafted HTTP request can lead to remote code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.
Which versions are affected by CVE-2021-21889?
It affects 1 product.
Products include Lantronix Premierwave 2050 Firmware.
How do I fix CVE-2021-21889?
No fix has been published for CVE-2021-21889 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-21889 being exploited?
There is no known exploitation of CVE-2021-21889 in the wild and no public exploit code.
Other vulnerabilities in Lantronix
Sources
Also known as GHSA-xmxf-9v5q-5mfw.