Input validation error in wpa_supplicant - CVE-2021-30004

Vulnerability identifier: #VU59106

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-30004

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to insufficient validation of user-supplied input in tls/pkcs1.c and tls/x509v3.c files in wpa_supplicant and hostapd when handling AlgorithmIdentifier parameters. A remote attacker can pass specially crafted input to the application and perform MitM attack.

wpa_supplicant
Gentoo Linux
SUSE MicroOS
SUSE Linux Enterprise Server
Slackware Linux
SUSE Linux Enterprise Module for Basesystem
hostapd
wpa_supplicant
wpa_supplicant-debuginfo
wpa_supplicant-debugsource
net-wireless/hostapd
Dell EMC PowerStore Family Operating System
RecoverPoint Classic
PowerScale OneFS

Install updates from vendor's website.

wpa_supplicant - update to 2.10
wpa_supplicant - addressed in versions 2.9-4.29.1, 2.9-23.12.1
wpa_supplicant-debuginfo - addressed in versions 2.9-4.29.1, 2.9-23.12.1
wpa_supplicant-debugsource - addressed in versions 2.9-4.29.1, 2.9-23.12.1
net-wireless/hostapd - update to 2.10
Dell EMC PowerStore Family Operating System - update to 4.0.0.0-2284811
RecoverPoint Classic - update to 5.1 SP4 P5
PowerScale OneFS - update to 12.0

• https://w1.fi/cgit/hostap/commit/?id=a0541334a6394f8237a4393b7372693cd7e96f15

• MitM attack in wpa_supplicant
• MitM attack in hostapd
• Slackware update for wpa_supplicant
• SUSE update for wpa_supplicant
• SUSE update for wpa_supplicant
• Gentoo update for wpa_supplicant, hostapd
• Multiple vulnerabilities in Dell PowerScale OneFS
• Multiple vulnerabilities in Dell PowerStore Family
• Multiple vulnerabilities in Dell RecoverPoint Classic