CVE-2018-9257 Denial of service in n/a

High 7.5 Published 4 Apr 2018 Updated 16 Sep 2024

An attacker can cause Wireshark to enter an infinite loop via a malicious CQL packet, leading to a denial of service.

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

What is CVE-2018-9257?

CVE-2018-9257 is a high-severity denial of service vulnerability in Wireshark Wireshark, published on 4 Apr 2018. 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 2.4.5, the CQL dissector could go into an infinite loop. This was addressed in epan/dissectors/packet-cql.c by checking for a nonzero number of columns.

Weakness: CWE-835

Which versions are affected by CVE-2018-9257?

It affects 1 product.

Products include Wireshark Wireshark.

How do I fix CVE-2018-9257?

Apply the vendor's patch.

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-2018-9257 being exploited?

There is no known exploitation of CVE-2018-9257 in the wild and no public exploit code.

All Wireshark Wireshark vulnerabilities

Sources

Also known as ALPINE-CVE-2018-9257, DEBIAN-CVE-2018-9257, GHSA-h56g-vjc8-2cgw, UBUNTU-CVE-2018-9257.