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.

CVSS v3.0 8.8 HIGH
CVSS v2.0 9.0 HIGH

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

9.0^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

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 (hide)

AND

cpe:2.3:o:grandstream:ht801_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:grandstream:ht801:-:*:*:*:*:*:*:*

Information

Published : 2021-10-28 05:15

Updated : 2021-11-03 07:00

NVD link : CVE-2021-37748

Mitre link : CVE-2021-37748

JSON object : View

CWE

CWE-787

Out-of-bounds Write

Products Affected

grandstream

ht801_firmware
ht801

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8.8 /10