SB2019080924 - Fedora EPEL 7 update for hostapd

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Main Vulnerability Database SB2019080924

SB2019080924 - Fedora EPEL 7 update for hostapd

Published: August 9, 2019 Updated: April 25, 2025

Security Bulletin ID SB2019080924
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Information disclosure (CVE-ID: CVE-2019-13377)

The vulnerability allows a remote attacker to conduct time-based side-channel attacks on a targeted system.

The vulnerability exists due to insufficient security restrictions during the WPA3's Dragonfly handshake process when using Brainpool curves. A remote in radio range of the access point can observe timing differences and cache access patterns, conduct a side-channel attack and access sensitive information that could be used for full password recovery.




2) NULL pointer dereference (CVE-ID: CVE-2019-11555)

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

Install update from vendor's website.

References