NULL Pointer Dereference Affecting wpa_supplicant package, versions [,2.8)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
9.39% (93rd percentile)

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  • Snyk IDSNYK-UNMANAGED-WPASUPPLICANT-2364102
  • published14 Dec 2021
  • disclosed26 Apr 2019
  • creditUnknown

Introduced: 26 Apr 2019

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

How to fix?

Upgrade wpa_supplicant to version 2.8 or higher.

Overview

Affected versions of this package are vulnerable to NULL Pointer Dereference. 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

CVSS Base Scores

version 3.1