#VU31083 NULL pointer dereference in hostapd - CVE-2019-11555

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU31083

#VU31083 NULL pointer dereference in hostapd - CVE-2019-11555

Published: April 27, 2019 / Updated: July 17, 2020


Vulnerability identifier: #VU31083
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-11555
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
hostapd
Software vendor:
Jouni Malinen

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error 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. A remote attacker can perform a denial of service (DoS) attack.


Remediation

Update to version 2.8.

External links