CVE-2021-21887 Memory corruption in Lantronix
A stack-based buffer overflow in the Web Manager allows authenticated attackers to execute arbitrary code via a crafted HTTP request.
- 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-2021-21887?
CVE-2021-21887 is a critical memory corruption vulnerability in Lantronix, published on 22 Dec 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A stack-based buffer overflow vulnerability exists in the Web Manager SslGenerateCSR 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-2021-21887?
It affects 1 product.
Products include Lantronix Premierwave 2050 Firmware.
How do I fix CVE-2021-21887?
No fix has been published for CVE-2021-21887 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-2021-21887 being exploited?
There is no known exploitation of CVE-2021-21887 in the wild and no public exploit code.
Other vulnerabilities in Lantronix
Sources
Also known as GHSA-mh5r-cxjx-37mf.