CVE-2016-7406 Code injection in n/a

Critical 9.8 Published Updated

Remote attackers can execute arbitrary code on Dropbear SSH servers by injecting format string specifiers into username or host arguments.

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

What is CVE-2016-7406?

CVE-2016-7406 is a critical code injection vulnerability in n/a, published on 3 Mar 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Format string vulnerability in Dropbear SSH before 2016.74 allows remote attackers to execute arbitrary code via format string specifiers in the (1) username or (2) host argument.

Weakness: CWE-20

Which versions are affected by CVE-2016-7406?

It affects 1 product.

Products include Dropbear Ssh Project Dropbear Ssh.

How do I fix CVE-2016-7406?

Upgrade to a fixed version.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2016-7406 being exploited?

There is no known exploitation of CVE-2016-7406 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2016-7406, GHSA-jvpx-9hv9-4qf6, UBUNTU-CVE-2016-7406.

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