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NULL Pointer Dereference Affecting hostapd package, versions <2.8-r0

Severity

 Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
2.65% (91st percentile)

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  • Snyk IDSNYK-ALPINE310-HOSTAPD-454117
  • published27 Apr 2019
  • disclosed26 Apr 2019
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Introduced: 26 Apr 2019

CVE-2019-11555  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Alpine:3.10 hostapd to version 2.8-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream hostapd package and not the hostapd package as distributed by Alpine. See How to fix? for Alpine:3.10 relevant fixed versions and status.

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