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Ubuntu Security Notice USN-7317-1
March 03, 2025

wpa vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

wpa_supplicant and hostapd could be made to expose sensitive information
over the network.

Software Description:
- wpa: client support for WPA and WPA2

Details:

George Chatzisofroniou and Panayiotis Kotzanikolaou discovered that
wpa_supplicant and hostapd reused encryption elements in the PKEX protocol.
An attacker could possibly use this issue to impersonate a wireless access
point, and obtain sensitive information. (CVE-2022-37660)

Daniel De Almeida Braga, Mohamed Sabt, and Pierre-Alain Fouque discovered
that wpa_supplicant and hostapd were vulnerable to side channel attacks due
to the cache access patterns. An attacker could possibly use this issue to
obtain sensitive information. This issue only affected Ubuntu 20.04 LTS.
(CVE-2022-23303, CVE-2022-23304)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.10
  hostapd                         2:2.10-22ubuntu0.1
  wpasupplicant                   2:2.10-22ubuntu0.1

Ubuntu 24.04 LTS
  hostapd                         2:2.10-21ubuntu0.2
  wpasupplicant                   2:2.10-21ubuntu0.2

Ubuntu 22.04 LTS
  hostapd                         2:2.10-6ubuntu2.2
  wpasupplicant                   2:2.10-6ubuntu2.2

Ubuntu 20.04 LTS
  hostapd                         2:2.9-1ubuntu4.6
  wpasupplicant                   2:2.9-1ubuntu4.6

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7317-1
  CVE-2022-23303, CVE-2022-23304, CVE-2022-37660

Package Information:
  https://launchpad.net/ubuntu/+source/wpa/2:2.10-22ubuntu0.1
  https://launchpad.net/ubuntu/+source/wpa/2:2.10-21ubuntu0.2
  https://launchpad.net/ubuntu/+source/wpa/2:2.10-6ubuntu2.2
  https://launchpad.net/ubuntu/+source/wpa/2:2.9-1ubuntu4.6