CVE-2021-37748 Memory corruption in n/a
Remote authenticated attackers can execute arbitrary code as root via buffer overflows in the configuration shell, potentially taking full control of the device.
- 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-2021-37748?
CVE-2021-37748 is a high-severity memory corruption vulnerability in n/a, published on 28 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Multiple buffer overflows in the limited configuration shell (/sbin/gs_config) on Grandstream HT801 devices before 1.0.29 allow remote authenticated users to execute arbitrary code as root via a crafted manage_if setting, thus bypassing the intended restrictions of this shell and taking full control of the device. There are default weak credentials that can be used to authenticate.
Weakness: CWE-787
Which versions are affected by CVE-2021-37748?
It affects 1 product.
Products include Grandstream Ht801 Firmware.
How do I fix CVE-2021-37748?
No fix has been published for CVE-2021-37748 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-2021-37748 being exploited?
There is no known exploitation of CVE-2021-37748 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-6mx4-p8p9-328j.