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Vulnerability · Published Mar 18, 2024 · Assigned by redhat

CVE-2023-7250Iperf3: possible denial of service

Medium 5.3

In plain English

A medium-severity security flaw in Red Hat Enterprise Linux 7 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.9%top 39.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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 the remainder or until the connection gets closed. This will prevent other connections to the server, leading to a denial of service.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8iperf33.5-10.el8_10ALSA-2024:4241
AlmaLinux:9iperf33.9-13.el9ALSA-2024:9185
Debian:12iperf3no fix listedDEBIAN-CVE-2023-7250
Debian:13iperf33.15-1DEBIAN-CVE-2023-7250
Debian:14iperf33.15-1DEBIAN-CVE-2023-7250
Rocky Linux:8iperf30:3.5-10.el8_10RLSA-2024:4241
Rocky Linux:9iperf30:3.9-13.el9_5.1RLSA-2024:9185
Ubuntu:22.04:LTSiperf33.9-1+deb11u1ubuntu0.1UBUNTU-CVE-2023-7250
Ubuntu:22.04:LTSiperf33.9-1+deb11u1ubuntu0.1USN-7970-1
Ubuntu:25.10iperf33.18-2ubuntu0.1USN-7970-1

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 7 see references

Weakness: CWE-183 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References