CVE-2017-9138 Command injection in n/a

High 8.0 Published Updated

Attackers with local network access can execute arbitrary shell commands and modify credentials via a debug interface on Tenda routers.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2017-9138?

CVE-2017-9138 is a high-severity command injection vulnerability in n/a, published on 21 May 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

There is a debug-interface vulnerability on some Tenda routers (FH1202/F1202/F1200: versions before 1.2.0.20). After connecting locally to a router in a wired or wireless manner, one can bypass intended access restrictions by sending shell commands directly and reading their results, or by entering shell commands that change this router's username and password.

Weakness: CWE-119

Which versions are affected by CVE-2017-9138?

It affects 3 products.

Products include Tendacn F1200 Firmware, Tendacn F1202 Firmware, Tendacn Fh1202 Firmware.

How do I fix CVE-2017-9138?

No fix has been published for CVE-2017-9138 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2017-9138 being exploited?

There is no known exploitation of CVE-2017-9138 in the wild and no public exploit code.

Sources

Also known as GHSA-9r56-m5wr-p8gc.

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