CVE-2017-17083 Denial of service in n/a

High 7.5 Published Updated

A flaw in the NetBIOS dissector allows attackers to crash Wireshark via crafted packets, requiring an upgrade to mitigate.

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

What is CVE-2017-17083?

CVE-2017-17083 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 1 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Wireshark 2.4.0 to 2.4.2 and 2.2.0 to 2.2.10, the NetBIOS dissector could crash. This was addressed in epan/dissectors/packet-netbios.c by ensuring that write operations are bounded by the beginning of a buffer.

Weakness: CWE-754

Which versions are affected by CVE-2017-17083?

It affects 2 products.

Products include Debian Debian Linux, Wireshark Wireshark.

How do I fix CVE-2017-17083?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2017-17083 being exploited?

There is no known exploitation of CVE-2017-17083 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2017-17083, DEBIAN-CVE-2017-17083, GHSA-p23v-5hfj-7c87, UBUNTU-CVE-2017-17083.

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