CVE-2018-14558

published 2018-10-30

CVE-2018-14558: An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10…

Priority P1 88 critical 9.8 CVSS 3.1

AV N AC L PR N UI N S U C H I H A H

KEV ITW

An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A command Injection vulnerability allows attackers to execute arbitrary OS commands via a crafted goform/setUsbUnload request. This occurs because the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
tenda	ac10_firmware	<= 15.03.06.23_cn	—
tenda	ac7_firmware	<= 15.03.06.44_cn	—
tenda	ac9_firmware	<= 15.03.05.19\(6318\)_cn	—

Detection & IOCs extracted from sources · hover to see the quote

url goform/setUsbUnload↗

• → Monitor HTTP requests targeting the 'goform/setUsbUnload' endpoint on Tenda AC7, AC9, and AC10 routers for command injection payloads in request parameters. ↗
• → Inspect calls to the 'formsetUsbUnload' function and any downstream invocation of 'dosystemCmd' with user-controlled input as the injection sink. ↗

• · Vulnerability affects Tenda AC7 only up to firmware V15.03.06.44_CN; AC9 only up to V15.03.05.19(6318)_CN; AC10 only up to V15.03.06.23_CN. Devices on later firmware versions may not be affected. ↗

CVSS provenance

nvd v3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 10.0 CRITICAL AV:N/AC:L/Au:N/C:C/I:C/A:C

vulncheck 9.8 CRITICAL

cisa 9.8 CRITICAL

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CWE-78