Ubuntu Security Notices
USN-6431-2

USN-6431-2: iperf3 vulnerability

Publication date

16 October 2023

Overview

iperf3 could be made to crash if it received specially crafted network traffic.

Releases

23.04 22.04 LTS

Packages

iperf3 - Internet Protocol bandwidth measuring tool

Details

USN-6431-1 fixed a vulnerability in iperf3. This update provides
the corresponding update for Ubuntu 22.04 LTS and Ubuntu 23.04.

Original advisory details:

It was discovered that iperf3 did not properly manage certain inputs,
which could lead to a crash. A remote attacker could possibly use this
issue to cause a denial of service. (CVE-2023-38403)

USN-6431-1 fixed a vulnerability in iperf3. This update provides
the corresponding update for Ubuntu 22.04 LTS and Ubuntu 23.04.

Original advisory details:

It was discovered that iperf3 did not properly manage certain inputs,
which could lead to a crash. A remote attacker could possibly use this
issue to cause a denial of service. (CVE-2023-38403)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release	Package Version
23.04 lunar	iperf3 – 3.12-1+deb12u1build0.23.04.1
23.04 lunar	libiperf0 – 3.12-1+deb12u1build0.23.04.1
22.04 jammy	iperf3 – 3.9-1+deb11u1build0.22.04.1
22.04 jammy	libiperf0 – 3.9-1+deb11u1build0.22.04.1

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References

CVE-2023-38403

CVE-2023-38403

USN-6431-1

USN-6431-1