Use of a Broken or Risky Cryptographic Algorithm Affecting wpa package, versions <2:2.6-15ubuntu2.2


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.73% (81st percentile)

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  • Snyk IDSNYK-UBUNTU1804-WPA-343023
  • published11 Apr 2019
  • disclosed17 Apr 2019

Introduced: 11 Apr 2019

CVE-2019-9495  (opens in a new tab)
CWE-327  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 wpa to version 2:2.6-15ubuntu2.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wpa package and not the wpa package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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.

CVSS Scores

version 3.1