Shenzhen Tenda cgi-bin/luci/usbeject system GET Request command injection

Summaryinfo

A vulnerability categorized as critical has been discovered in Shenzhen Tenda. This affects the function system of the file cgi-bin/luci/usbeject. The manipulation as part of GET Request results in command injection. This vulnerability is reported as CVE-2017-16923. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in Shenzhen Tenda (affected version unknown). Affected is the function system of the file cgi-bin/luci/usbeject. The manipulation as part of a GET Request leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Command Injection vulnerability in app_data_center on Shenzhen Tenda Ac9 US_AC9V1.0BR_V15.03.05.14_multi_TD01, Ac9 ac9_kf_V15.03.05.19(6318_)_cn, Ac15 US_AC15V1.0BR_V15.03.05.18_multi_TD01, Ac15 US_AC15V1.0BR_V15.03.05.19_multi_TD01, Ac18 US_AC18V1.0BR_V15.03.05.05_multi_TD01, and Ac18 ac18_kf_V15.03.05.19(6318_)_cn devices allows remote unauthenticated attackers to execute arbitrary OS commands via a crafted cgi-bin/luci/usbeject?dev_name= GET request from the LAN. This occurs because the "sub_A6E8 usbeject_process_entry" function executes a system function with untrusted input.

The bug was discovered 11/21/2017. The weakness was disclosed 11/21/2017 (Website). The advisory is available at github.com. This vulnerability is traded as CVE-2017-16923 since 11/21/2017. It is possible to launch the attack remotely. The successful exploitation needs a authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Router Operating System

Vendor

• Shenzhen

Name

• Tenda

License

• commercial

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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