CVE-2019-11555 — NULL Pointer Dereference in Hostapd

CWE-476 — NULL Pointer Dereference13 documents9 sources
Severity
5.9MEDIUMNVD
EPSS
13.7%
top 5.72%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
W1.fi HostapdW1.fi WPA Supplicant
Timeline
PublishedApr 26
Latest updateMay 24

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.

CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.2 | Impact: 3.6

Affected Packages2 packages

▶NVDw1.fi/hostapd< 2.8

Patches

Patch: www.openwall.com ↗Patch: w1.fi ↗Patch: www.openwall.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-3r3j-9m7c-h35g: The EAP-pwd implementation in hostapd (EAP server) before 2↗2022-05-24
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CVEList
CVE-2019-11555: The EAP-pwd implementation in hostapd (EAP server) before 2↗2019-04-26
▶
OSV
CVE-2019-11555: The EAP-pwd implementation in hostapd (EAP server) before 2↗2019-04-26
▶

📋Vendor Advisories

5
BSD
FreeBSD-SA-19:03.wpa: Multiple vulnerabilities in hostapd and wpa_supplicant↗2019-05-14
▶
Ubuntu
wpa_supplicant and hostapd vulnerability↗2019-05-09
▶
Ubuntu
wpa_supplicant and hostapd vulnerability↗2019-05-07
▶
Red Hat
wpa_supplicant: NULL pointer dereference due to improper fragmentation reassembly state validation in EAP-pwd implementation↗2019-04-18
▶
Debian
CVE-2019-11555: wpa - The EAP-pwd implementation in hostapd (EAP server) before 2.8 and wpa_supplicant...↗2019
▶

💬Community

4
Bugzilla
CVE-2019-11555 hostapd: wpa_supplicant: NULL pointer dereference due to improper fragmentation reassembly state validation in EAP-pwd implementation [epel-all]↗2019-05-22
▶
Bugzilla
CVE-2019-11555 hostapd: wpa_supplicant: NULL pointer dereference due to improper fragmentation reassembly state validation in EAP-pwd implementation [fedora-all]↗2019-05-22
▶
Bugzilla
CVE-2019-11555 wpa_supplicant: NULL pointer dereference due to improper fragmentation reassembly state validation in EAP-pwd implementation [fedora-all]↗2019-04-26
▶
Bugzilla
CVE-2019-11555 wpa_supplicant: NULL pointer dereference due to improper fragmentation reassembly state validation in EAP-pwd implementation↗2019-04-26
▶
CVE-2019-11555 — NULL Pointer Dereference in Hostapd | cvebase