Auth bypass in FreeBSD
CVE-2019-9498
The implementations of EAP-PWD in hostapd EAP Server, 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 be able to use invalid scalar/element values to complete authentication, gaining session key and network access without needing or learning the password. 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (82.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- FreeBSD — versions 11.2, 12.0
- Synology Radius Server — versions 3.0
- Synology Router Manager — versions 1.2
- W1.fi Hostapd
- W1.fi Wpa Supplicant
- Wi-Fi Alliance Hostapd With Eap-Pwd Support — versions 2.7
- Wi-Fi Alliance Hostapd With Sae Support — versions 2.4
- Wi-Fi Alliance Wpa Supplicant With Eap-Pwd Support — versions 2.7
- Wi-Fi Alliance Wpa Supplicant With Sae Support — versions 2.4
- Debian Linux — versions 8.0
Weakness classification (CWE)
References
- w1.fi/security/2019-4/ (Patch, Vendor Advisory)
- www.synology.com/security/advisory/Synology_SA_19_16 (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2019/May/40 (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/07/msg00030.html (mailing-list, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-9498?
- CVE-2019-9498 is a high-severity vulnerability in FreeBSD, classified under Origin Validation Error. CVSS score: 8.1/10. Published 2019-04-17.
- How severe is CVE-2019-9498?
- High severity. CVSS v3 base score is 8.1 out of 10.