Back Linuxsecurity Ubuntu 25.10: iperf3 Critical Denial of Service Vulnerabilities USN-7970
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in iperf3. Software Description: - iperf3: A TCP, UDP, and SCTP network bandwidth measurement tool 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. This issue was only addressed in Ubuntu 22.04 LTS. (CVE-2023-7250) It was discovered that iperf3 had a timing side-channel when performing RSA decryption. An attacker could possibly use this issue to recover sensitive information. This issue was only addressed in Ubuntu 20.04 LTS and Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-26306) It was discovered that iperf3 incorrectly handled certain inputs. An
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in iperf3. Software Description: - iperf3: A TCP, UDP, and SCTP network bandwidth measurement tool 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. This issue was only addressed in Ubuntu 22.04 LTS. (CVE-2023-7250) It was discovered that iperf3 had a timing side-channel when performing RSA decryption. An attacker could possibly use this issue to recover sensitive information. This issue was only addressed in Ubuntu 20.04 LTS and Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-26306) It was discovered that iperf3 incorrectly handled certain inputs. An
The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 iperf3 3.18-2ubuntu0.1 libiperf0 3.18-2ubuntu0.1 Ubuntu 24.04 LTS iperf3 3.16-1ubuntu0.1~esm1 Available with Ubuntu Pro libiperf0 3.16-1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 22.04 LTS iperf3 3.9-1+deb11u1ubuntu0.1 libiperf0 3.9-1+deb11u1ubuntu0.1 Ubuntu 20.04 LTS iperf3 3.7-3ubuntu0.1~esm2 Available with Ubuntu Pro libiperf0 3.7-3ubuntu0.1~esm2 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.
The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 iperf3 3.18-2ubuntu0.1 libiperf0 3.18-2ubuntu0.1 Ubuntu 24.04 LTS iperf3 3.16-1ubuntu0.1~esm1 Available with Ubuntu Pro libiperf0 3.16-1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 22.04 LTS iperf3 3.9-1+deb11u1ubuntu0.1 libiperf0 3.9-1+deb11u1ubuntu0.1 Ubuntu 20.04 LTS iperf3 3.7-3ubuntu0.1~esm2 Available with Ubuntu Pro libiperf0 3.7-3ubuntu0.1~esm2 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.
CVE-2023-7250, CVE-2024-26306, CVE-2024-53580, CVE-2025-54349, CVE-2025-54350
CVE-2023-7250, CVE-2024-26306, CVE-2024-53580, CVE-2025-54349,
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