#VU23964 Permissions, Privileges, and Access Controls in wpa_supplicant and hostapd - CVE-2019-9499

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Main Vulnerability Database Vulnerabilities #VU23964

#VU23964 Permissions, Privileges, and Access Controls in wpa_supplicant and hostapd - CVE-2019-9499

Published: January 6, 2020


Vulnerability identifier: #VU23964
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-9499
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
wpa_supplicant
hostapd
Software vendor:
Jouni Malinen

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to the implementations of EAP-PWD in wpa_supplicant EAP Peer, when built against a crypto library missing explicit validation on imported elements, do not validate the scalar and element values in EAP-pwd-Commit. A remote attacker can complete authentication, session key and control of the data connection with a client.

This vulnerability affects the following products:

  • hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.4
  • hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7

Remediation

Install updates from vendor's website.

External links