Vulnerability in FreeBSD
CVE-2019-9494
The implementations of SAE in hostapd and wpa_supplicant are vulnerable to side channel attacks as a result of observable timing differences and cache access patterns. An attacker may be able to gain leaked information from a side channel attack that can be used for full password recovery. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.7 are affected.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.039 (89.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · change: 0.000
Affected products
- FreeBSD — versions 11.2, 12.0
- Synology Radius Server — versions 3.0
- Synology Router Manager
- W1.fi Hostapd
- W1.fi Wpa Supplicant
- Wi-Fi Alliance Hostapd With Sae Support — versions 2.7
- Wi-Fi Alliance Wpa Supplicant With Sae Support — versions 2.7
- Fedoraproject Fedora — versions 28, 29, 30
- openSUSE Backports Sle — versions 15.0
- openSUSE Leap — versions 15.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- w1.fi/security/2019-1/ (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)
- packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03… (VDB Entry, 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-2019-9494?
- CVE-2019-9494 is a medium-severity vulnerability in FreeBSD, classified under CWE-208. CVSS score: 5.9/10. Published 2019-04-17.
- How severe is CVE-2019-9494?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2019-9494 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.