CVE-2024-26306

Publication date 14 May 2024

Last updated 22 January 2026

Ubuntu priority

Cvss 3 Severity Score

Description

iPerf3 before 3.17, when used with OpenSSL before 3.2.0 as a server with RSA authentication, allows a timing side channel in RSA decryption operations. This side channel could be sufficient for an attacker to recover credential plaintext. It requires the attacker to send a large number of messages for decryption, as described in "Everlasting ROBOT: the Marvin Attack" by Hubert Kario.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
iperf3	25.10 questing	Not affected
	25.04 plucky	Ignored end of life, was needs-triage
	24.10 oracular	Ignored end of life, was needs-triage
	24.04 LTS noble	Fixed 3.16-1ubuntu0.1~esm1
	23.10 mantic	Ignored end of life, was needs-triage
	22.04 LTS jammy	Fixed 3.9-1+deb11u1ubuntu0.1
	20.04 LTS focal	Fixed 3.7-3ubuntu0.1~esm2
	18.04 LTS bionic	Ignored backporting risks regression
	16.04 LTS xenial	Ignored backporting risks regression

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
iperf3	Upstream: 299b356

Severity score breakdown

Parameter	Value
Base score	5.9 · Medium
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-7970-1
iperf3 vulnerabilities
21 January 2026