cve/2021/CVE-2021-37748.md

CVE-2021-37748

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.

POC

Reference

• https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/SECFORCE/CVE-2021-37748
• https://github.com/nomi-sec/PoC-in-GitHub