CVE-2021-37748

Public Exploit

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.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 11.92% Top 10%
Vendor Advisory grandstream.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801 product vendor advisory
https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/ third party advisory exploit
https://github.com/SECFORCE/CVE-2021-37748 third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-37748?
CVE-2021-37748 has been scored as a high severity vulnerability.
How to fix CVE-2021-37748?
To fix CVE-2021-37748, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-37748 being actively exploited in the wild?
It is possible that CVE-2021-37748 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~12% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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