CVE-2018-7329 Denial of service in n/a

High 7.5 Published 23 Feb 2018 Updated 5 Aug 2024

An attacker can cause a denial of service in Wireshark via an infinite loop triggered by malformed S7comm packets.

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

What is CVE-2018-7329?

CVE-2018-7329 is a high-severity denial of service vulnerability in Wireshark Wireshark, published on 23 Feb 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 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-s7comm.c had an infinite loop that was addressed by correcting off-by-one errors.

Weakness: CWE-835, CWE-193

Which versions are affected by CVE-2018-7329?

It affects 1 product.

Products include Wireshark Wireshark.

How do I fix CVE-2018-7329?

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-2018-7329 being exploited?

There is no known exploitation of CVE-2018-7329 in the wild and no public exploit code.

All Wireshark Wireshark vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-7329, GHSA-x2fx-c427-rwxp, UBUNTU-CVE-2018-7329.