CVE-2018-3778 Improper Authorization in aedes

Medium 5.3 Published Updated

An attacker can publish Last Will and Testament messages to unauthorized channels in the aedes MQTT broker library.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2018-3778?

CVE-2018-3778 is a medium-severity missing authorization vulnerability in HackerOne aedes, published on 8 Aug 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Improper authorization in aedes version <0.35.0 will publish a LWT in a channel when a client is not authorized.

Weakness: CWE-863, CWE-285

Which versions are affected by CVE-2018-3778?

2 open source packages ship an affected version, including aedes. It affects 1 product.

PackageAffectedFixed in
aedes npmAll versions0.35.1
aedes npmAll versions0.35.1

Products include Aedes Project Aedes.

How do I fix CVE-2018-3778?

Upgrade aedes to 0.35.1 or later.

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

Is CVE-2018-3778 being exploited?

There is no known exploitation of CVE-2018-3778 in the wild and no public exploit code.

Sources

Also known as GHSA-4cmx-hrq9-c23p.

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