medium
5.9
CWE
203 208 524
Advisory Published
Updated

CVE-2019-9494: The implementations of SAE in hostapd and wpa_supplicant are vulnerable to side-channel attacks

First published: Wed Apr 17 2019(Updated: )

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.

Credit: cret@cert.org

Affected SoftwareAffected VersionHow to fix
W1.fi Hostapd<=2.7
W1.fi Wpa Supplicant<=2.7
Fedoraproject Fedora=28
Fedoraproject Fedora=29
Fedoraproject Fedora=30
openSUSE Backports SLE=15.0
openSUSE Backports SLE=15.0-sp1
openSUSE Leap=15.1
Synology Radius Server=3.0
Synology Router Manager<1.2.3-8087
FreeBSD FreeBSD=11.2
FreeBSD FreeBSD=11.2-p2
FreeBSD FreeBSD=11.2-p3
FreeBSD FreeBSD=11.2-p4
FreeBSD FreeBSD=11.2-p5
FreeBSD FreeBSD=11.2-p6
FreeBSD FreeBSD=11.2-p7
FreeBSD FreeBSD=11.2-p8
FreeBSD FreeBSD=11.2-p9
FreeBSD FreeBSD=11.2-rc3
FreeBSD FreeBSD=12.0
FreeBSD FreeBSD=12.0-p1
FreeBSD FreeBSD=12.0-p2
FreeBSD FreeBSD=12.0-p3

Remedy

https://w1.fi/security/2019-1/

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Reference Links

Frequently Asked Questions

  • What is CVE-2019-9494?

    CVE-2019-9494 is a vulnerability in the implementations of SAE in hostapd and wpa_supplicant, which are vulnerable to side channel attacks.

  • What is the severity of CVE-2019-9494?

    The severity of CVE-2019-9494 is medium with a CVSS score of 5.9.

  • Which software is affected by CVE-2019-9494?

    The affected software includes W1.fi Hostapd, W1.fi Wpa Supplicant, Fedoraproject Fedora, openSUSE Backports SLE, openSUSE Leap, Synology Radius Server, Synology Router Manager, and Freebsd Freebsd.

  • How can an attacker exploit CVE-2019-9494?

    An attacker can exploit CVE-2019-9494 by gaining leaked information from a side channel attack that can be used for full password recovery.

  • Are there any references for CVE-2019-9494?

    Yes, you can find references for CVE-2019-9494 at the following links: http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.html, http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03.wpa.html, and https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP4HDSDBLAE/.

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