Summary
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
attacker could possibly use this issue to cause a denial of service. This
issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu
24.04 LTS. (CVE-2024-53580)
Han Lee discovered that iperf3 had an off-by-one heap overflow. An attacker
could possibly use this issue to crash the program or execute arbitrary
code. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS,
Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2025-54349)
Han Lee discovered that iperf3 did not properly manage certain inputs. An
attacker could possibly use this issue to cause a denial of service.
(CVE-2025-54350)
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 22.04 LTS 22.04:LTS | iperf3 | 3.9-1+deb11u1ubuntu0.1 |
| Ubuntu · 25.10 | iperf3 | 3.18-2ubuntu0.1 |
| Ubuntu · Pro 20.04 LTS Pro:20.04:LTS | iperf3 | 3.7-3ubuntu0.1~esm2 |
| Ubuntu · Pro 24.04 LTS Pro:24.04:LTS | iperf3 | 3.16-1ubuntu0.1~esm1 |
Vulnerabilities 5
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High 7.5
iperf v3.17.1 was discovered to contain a segmentation violation via the iperf_exchange_parameters() function.
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Medium 6.5
In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow.
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Medium 5.9
iPerf3 before 3.17, when used with OpenSSL before 3.2.0 as a server with RSA authentication, allows a timing side chann…
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Medium 5.3
Iperf3: possible denial of service
A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP. A malicious or malfunctioning client can send less than the expected amount of data to the iperf server, which can cause the server to hang indefinitely waiting for…
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Low 3.7
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authent…