Vulnerability Description
The implementations of EAP-PWD in hostapd EAP Server and wpa_supplicant EAP Peer do not validate the scalar and element values in EAP-pwd-Commit. This vulnerability may allow an attacker to complete EAP-PWD authentication without knowing the password. However, unless the crypto library does not implement additional checks for the EC point, the attacker will not be able to derive the session key or complete the key exchange. 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| W1.Fi | Hostapd | <= 2.4 |
| W1.Fi | Wpa Supplicant | <= 2.4 |
| Fedoraproject | Fedora | 28 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.html
- http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA
- https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://seclists.org/bugtraq/2019/May/40
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc
- https://w1.fi/security/2019-4/PatchVendor Advisory
- https://www.synology.com/security/advisory/Synology_SA_19_16
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.html
- http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA
- https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
FAQ
What is CVE-2019-9497?
CVE-2019-9497 is a vulnerability with a CVSS score of 8.1 (HIGH). The implementations of EAP-PWD in hostapd EAP Server and wpa_supplicant EAP Peer do not validate the scalar and element values in EAP-pwd-Commit. This vulnerability may allow an attacker to complete E...
How severe is CVE-2019-9497?
CVE-2019-9497 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-9497?
Check the references section above for vendor advisories and patch information. Affected products include: W1.Fi Hostapd, W1.Fi Wpa Supplicant, Fedoraproject Fedora.