Input validation error in wpa_supplicant and hostapd - CVE-2019-16275

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Main Vulnerability Database Vulnerabilities #VU21420

Input validation error in wpa_supplicant and hostapd - CVE-2019-16275

Published: September 30, 2019 / Updated: September 30, 2019


Vulnerability identifier: #VU21420
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-16275
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the affected software allows an incorrect indication of disconnection in certain situations because source address validation is mishandled. A remote attacker in radio range of the access point can send a specially crafted 802.11 frame and cause a denial of service condition on target system.


Affected software

wpa_supplicant
hostapd
busybox (Alpine package)
wpa (Debian package)
hostapd (Alpine package)
wpa_supplicant (Alpine package)
wpa_supplicant
hostapd
Fedora
Slackware Linux

How to mitigate CVE-2019-16275

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

wpa (Debian package) - update to 2:2.7+git20190128+0c1e29f-6+deb10u1
hostapd (Alpine package) - update to 2.6-r6
wpa_supplicant (Alpine package) - update to 2.6-r11
wpa_supplicant - addressed in versions 2.7-2.fc29, 2.8-3.fc30, 2.9-2.fc31
hostapd - addressed in versions 2.9-2.el7, 2.9-2.fc30, 2.9-2.fc31

External References

Related Security Bulletins