medium
4.3
CWE
203 524
Advisory Published
CVE Published
Updated

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

First published: Wed Apr 10 2019(Updated: )

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.

Credit: cret@cert.org 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<1.2.3-8017
Debian Debian Linux=8.0
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
ubuntu/wpa<2:2.6-15ubuntu2.2
2:2.6-15ubuntu2.2
ubuntu/wpa<2:2.6-18ubuntu1.1
2:2.6-18ubuntu1.1
ubuntu/wpa<2:2.6-21ubuntu3
2:2.6-21ubuntu3
ubuntu/wpa<2.1-0ubuntu1.7
2.1-0ubuntu1.7
ubuntu/wpa<2.8
2.8
ubuntu/wpa<2.4-0ubuntu6.4
2.4-0ubuntu6.4
debian/wpa
2:2.9.0-21+deb11u1
2:2.9.0-21+deb11u2
2:2.10-12+deb12u1
2:2.10-12+deb12u2
2:2.10-21.1
2:2.10-22

Remedy

https://w1.fi/security/2019-2/

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2019-9495.

  • What is the severity of CVE-2019-9495?

    The severity of CVE-2019-9495 is medium with a CVSS score of 3.7.

  • Which software versions are affected by CVE-2019-9495?

    All versions of hostapd and wpa_supplicant with EAP-PWD support are affected by CVE-2019-9495.

  • How can I fix CVE-2019-9495?

    To fix CVE-2019-9495, update hostapd and wpa_supplicant to version 2.8 or later.

  • Where can I find more information about CVE-2019-9495?

    You can find more information about CVE-2019-9495 in the following references: [Reference 1](http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.html), [Reference 2](http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03.wpa.html), [Reference 3](https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html)

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