Published: 26/04/2019 Updated: 07/11/2023

CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 5.9 | Impact Score: 3.6 | Exploitability Score: 2.2

VMScore: 383

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

The EAP-pwd implementation in hostapd (EAP server) prior to 2.8 and wpa_supplicant (EAP peer) prior to 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.

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w1.fi hostapd
w1.fi wpa supplicant

Debian Bug report logs - #927463 wpa: CVE-2019-11555: EAP-pwd message reassembly issue with unexpected fragment Package: src:wpa; Maintainer for src:wpa is Debian wpasupplicant Maintainers <wpa@packagesdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Sat, 20 Apr 2019 06:15:05 UTC Severity: im ...

wpa_supplicant and hostapd could be made to crash if they received specially crafted network traffic ...

A vulnerability was found in the WPA protocol implementation found in wpa_supplication (station) and hostapd (access point) The EAP-pwd implementation in hostapd (EAP server) and wpa_supplicant (EAP peer) doesn't properly validate fragmentation reassembly state when receiving an unexpected fragment This could lead to a process crash due to a NULL ...

Impact: Moderate Public Date: 2019-04-18 CWE: CWE-476 Bugzilla: 1703417: wpa_supplicant: Improper fragm ...

oss-sec mailing list archives   By Date By Thread </form>    Re: wpa_supplicant/hostapd: EAP-pwd message reassembly issue with unexpected fragment  <!--X-Head-o ...

CWE-476 https://www.openwall.com/lists/oss-security/2019/04/18/6 https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt https://w1.fi/security/2019-5/http://www.openwall.com/lists/oss-security/2019/04/26/1 https://usn.ubuntu.com/3969-1/https://usn.ubuntu.com/3969-2/https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc https://seclists.org/bugtraq/2019/May/40 https://www.debian.org/security/2019/dsa-4450 https://seclists.org/bugtraq/2019/May/64 https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html https://security.gentoo.org/glsa/201908-25 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5T7G763UECWR7FQXOJVL67PW7C5A3SA4/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IQ6P2GI5GSXRNLNIUNPARFZQVDEIGVZD/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DJKZHAT5KPUN26JL77EUH563GAH5XZ5C/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=927463 https://nvd.nist.gov https://usn.ubuntu.com/3969-1/

CVE-2019-11555

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