Ubuntu Security Notice 6431-3 - USN-6431-1 fixed a vulnerability in iperf3. This update provides the corresponding update for Ubuntu 22.04 LTS. Jorge Sancho Larraz discovered that iperf3 did not properly manage certain inputs, which could cause the server process to stop responding, waiting for input on the control connection. A remote attacker could possibly use this issue to cause a denial of service.
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Ubuntu Security Notice USN-6431-3
October 16, 2023
iperf3 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.04 LTS (Available with Ubuntu Pro)
Summary:
iperf3 could be made to to stop responding if it received specially
crafted network traffic.
Software Description:
- 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.
Original advisory details:
Jorge Sancho Larraz discovered that iperf3 did not properly manage certain
inputs, which could cause the server process to stop responding, waiting
for input on the control connection. A remote attacker could possibly use
this issue to cause a denial of service. (LP: #2038654)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 22.04 LTS (Available with Ubuntu Pro):
iperf3 3.9-1+deb11u1ubuntu0.1~esm1
libiperf0 3.9-1+deb11u1ubuntu0.1~esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6431-3
https://ubuntu.com/security/notices/USN-6431-1
https://launchpad.net/bugs/2038654