Vulnerabilities > CVE-2021-37748 - Out-of-bounds Write vulnerability in Grandstream Ht801 Firmware 1.0.17.5
Attack vector
NETWORK Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 2 | |
| Hardware | 1 |
Common Weakness Enumeration (CWE)
References
- http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801
- http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801
- https://github.com/SECFORCE/CVE-2021-37748
- https://github.com/SECFORCE/CVE-2021-37748
- https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/
- https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/