CVE-2021-37915

An issue was discovered on the Grandstream HT801 Analog Telephone Adaptor before 1.0.29.8. From the limited configuration shell, it is possible to set the malicious gdb_debug_server variable. As a result, after a reboot, the device downloads and executes malicious scripts from an attacker-defined host.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.8 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 72%
VendorProductVersion
grandstreamht801_firmware
𝑥
< 1.0.29.8
𝑥
= Vulnerable software versions
References
http://firmware.grandstream.com/BETA/Release_Note_HT80x_1.0.29.8.pdf
http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801
https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/
http://firmware.grandstream.com/BETA/Release_Note_HT80x_1.0.29.8.pdf
http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801
https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/