Vulnerability in FreeBSD
CVE-2019-9495
The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channel attacks as a result of cache access patterns. All versions of hostapd and wpa_supplicant with EAP-PWD support are vulnerable. The ability to install and execute applications is necessary for a successful attack. Memory access patterns are visible in a shared cache. Weak passwords may be cracked. Versions of hostapd/wpa_supplicant 2.7 and newer, are not vulnerable to the timing attack described in CVE-2019-9494. 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 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.035 (89.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.035 · newest: 0.035 · 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 Eap-Pwd Support — versions 2.7
- Wi-Fi Alliance Wpa Supplicant With Eap-Pwd Support — versions 2.7
- Debian Linux — versions 8.0
- Fedoraproject Fedora — versions 28, 29, 30
- openSUSE Backports Sle — versions 15.0
Weakness classification (CWE)
References
- w1.fi/security/2019-2/ (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.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-2019-9495?
- CVE-2019-9495 is a low-severity vulnerability in FreeBSD, classified under Use of Cache Containing Sensitive Information. CVSS score: 3.7/10. Published 2019-04-17.
- How severe is CVE-2019-9495?
- Low severity. CVSS v3 base score is 3.7 out of 10.