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Improper Authentication Affecting wpa package, versions <2:2.6-15ubuntu2.2

Severity

 Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.82% (88th percentile)

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  • Snyk IDSNYK-UBUNTU1804-WPA-343070
  • published11 Apr 2019
  • disclosed17 Apr 2019
Report a new vulnerability Found a mistake?

Introduced: 11 Apr 2019

CVE-2019-9497  (opens in a new tab)
CWE-287  (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 EAP Server and wpa_supplicant EAP Peer do not validate the scalar and element values in EAP-pwd-Commit. This vulnerability may allow an attacker to complete EAP-PWD authentication without knowing the password. However, unless the crypto library does not implement additional checks for the EC point, the attacker will not be able to derive the session key or complete the key exchange. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.4 are affected. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.

References