CVE-2019-11555

MEDIUM

hostapd <2.8 - wpa_supplicant <2.8 - DoS

Title source: llm
STIX 2.1

Description

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.

References (15)

Core 15
Core References
Mailing List, Patch, Third Party Advisory x_refsource_misc
https://www.openwall.com/lists/oss-security/2019/04/18/6
Patch, Vendor Advisory x_refsource_misc
https://w1.fi/security/2019-5/
Mailing List, Patch, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2019/04/26/1
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3969-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3969-2/
Various Sources vendor-advisory x_refsource_freebsd
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc
Mailing List mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2019/May/40
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2019/dsa-4450
Mailing List mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2019/May/64
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201908-25

Scores

CVSS v3 5.9
EPSS 0.0325
EPSS Percentile 86.8%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-476
Status published
Products (2)
w1.fi/hostapd < 2.8
w1.fi/wpa_supplicant < 2.8
Published Apr 26, 2019
Tracked Since Feb 18, 2026