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Ubuntu: USN-3944-1 (CVE-2019-9495): wpa_supplicant and hostapd vulnerabilities

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Ubuntu: USN-3944-1 (CVE-2019-9495): wpa_supplicant and hostapd vulnerabilities

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
04/10/2019
Created
04/26/2019
Added
04/24/2019
Modified
03/02/2020

Description

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.

Solution(s)

  • ubuntu-upgrade-hostapd
  • ubuntu-upgrade-wpasupplicant

References

  • USN-3944-1
  • CVE-2019-9495

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