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CVE-2019-11555

Published: 26 April 2019

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.

Priority

Medium

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package Release Status
wpa
Launchpad, Ubuntu, Debian
upstream
Released (2:2.7+git20190128+0c1e29f-5)
xenial
Released (2.4-0ubuntu6.5)
bionic
Released (2:2.6-15ubuntu2.3)
cosmic
Released (2:2.6-18ubuntu1.2)
disco
Released (2:2.6-21ubuntu3.1)
Patches:
upstream: https://w1.fi/security/2019-5/

Severity score breakdown

Parameter Value
Base score 5.9
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H