VulnerabilityModified
CVE-2021-37915
From the limited configuration shell, it is possible to set the malicious gdb_debug_server variable.
HIGH 8.8EPSS 2.03%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.03%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.03% probability · 80th percentile
- CISA KEV
- Not listed
- Affected
- grandstream/ht801 firmware
- Source
- cve@mitre.org
References
- http://firmware.grandstream.com/BETA/Release_Note_HT80x_1.0.29.8.pdfBroken Link
- http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801Product, Vendor Advisory
- https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/Exploit, Third Party Advisory
- http://firmware.grandstream.com/BETA/Release_Note_HT80x_1.0.29.8.pdfBroken Link
- http://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801Product, Vendor Advisory
- https://www.secforce.com/blog/exploiting-grandstream-ht801-ata-cve-2021-37748-cve-2021-37915/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.