CVE-2019-11555

The EAP-pwd implementation in hostapd (EAP server) before 2.8 and wpa_supplicant (EAP peer) before 2.8 does not validate fragmentation reassembly state properly for a case where an unexpected fragment could be received. This could result in process termination due to a NULL pointer dereference (denial of service). This affects eap_server/eap_server_pwd.c and eap_peer/eap_pwd.c.

This issue did not affect the versions of wpa_supplicant as shipped with Red Hat Enterprise Linux 5, and 6 as they did not include support for EAP-pwd.

This issue did not affect the versions of wpa_supplicant as shipped with Red Hat Enterprise Linux 7, and 8 as they are not compiled with EAP-pwd enabled. In particular, the CONFIG_EAP_PWD=y option is not set at compile time.

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.