CVE Vulnerability

CVE-2021-37748

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.

9 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

8.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
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/ Exploit Third Party Advisory
https://github.com/SECFORCE/CVE-2021-37748 Third Party Advisory
Configurations

Configuration 1
Information

Published : 2021-10-28 12:15

Updated : 2021-11-03 02:00

NVD link : CVE-2021-37748

Mitre link : CVE-2021-37748

Products Affected
No products.
CWE
CWE-787