CVE-2019-16275

A vulnerability was discovered in wpa_supplicant. When Access Point (AP) mode and Protected Management Frames (PMF) (IEEE 802.11w) are enabled, wpa_supplicant does not perform enough validation on the source address of some received management frames. An attacker within the 802.11 communications range could use this flaw to inject an unauthenticated frame and perform a denial-of-service attack against another device which would be disconnected from the network.

This issue did not affect the versions of wpa_supplicant as shipped with Red Hat Enterprise Linux 5, 6, 7, and 8. Versions of the package shipped in Red Hat Enterprise Linux 5 and 6 are built without AP mode (CONFIG_AP=y), while versions of the package shipped in Red Hat Enterprise Linux 7 and 8, even though they support AP mode, do not enable IEEE 802.11w (CONFIG_IEEE80211W=y). Both options are required for the flaw to be exploited.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.