CVE-2018-5393 TP-Link EAP Controller versions 2.5.3 and earlier lack RMI authentication

Critical 9.8 Published Updated

Remote attackers can execute arbitrary code via unauthenticated RMI deserialization in TP-Link EAP Controller, requiring an upgrade to secure the service.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2018-5393?

CVE-2018-5393 is a critical missing authorization vulnerability in TP-LINK EAP Controller, published on 28 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The TP-LINK EAP Controller is TP-LINK's software for remotely controlling wireless access point devices. It utilizes a Java remote method invocation (RMI) service for remote control. The RMI interface does not require any authentication before use, so it lacks user authentication for RMI service commands in EAP controller versions 2.5.3 and earlier. Remote attackers can implement deserialization attacks through the RMI protocol. Successful attacks may allow a remote attacker to remotely control the target server and execute Java functions or bytecode.

Weakness: CWE-306

Which versions are affected by CVE-2018-5393?

It affects 1 product.

Products include Tp-Link Eap Controller.

How do I fix CVE-2018-5393?

No fix has been published for CVE-2018-5393 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2018-5393 being exploited?

There is no known exploitation of CVE-2018-5393 in the wild and no public exploit code.

Sources

Also known as GHSA-rrgh-7g24-h4hg.

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