CVE intelligence and bounded remediation

CVE-2023-7250 — A flaw was found in iperf, a utility for testing network performance using TCP, UDP, and SCTP

Medium CVSS 5.3

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.

Severity
Medium
CVSS
5.3 (3.1)
Published
2024-03-18
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-183

Affected products

  • es / iperf3
  • redhat / enterprise_linux / 8.0
  • redhat / enterprise_linux / 9.0
  • redhat / enterprise_linux_for_arm_64 / 8.0_aarch64
  • redhat / enterprise_linux_for_arm_64 / 9.0_aarch64
  • redhat / enterprise_linux_for_ibm_z_systems / 8.0_s390x

Showing 6 representative product identities from 8 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Resource exhaustion and denial of service

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify attacker-influenced work factors including input size, nesting, compression, fan-out, regex cost, allocation, recursion, retries, and connection lifetime.
  • Map per-request and shared CPU, memory, disk, descriptor, thread, queue, and downstream-service limits.
  • Determine whether authentication, tenancy, quotas, and rate controls apply before expensive processing begins.

Remediate safely

  • Bound input size, nesting, expansion, work, concurrency, queue depth, retries, and execution time before resource-intensive processing.
  • Release resources on every success, error, cancellation, and timeout path and use backpressure instead of unbounded buffering.
  • Update affected components and add small deterministic tests that assert resource ceilings rather than exhausting a host.

Authoritative sources

Complete CVE record and remediation plan

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