Executive Summary

Title wpa security update
Name DSA-4450 First vendor Publication 2019-05-24
Vendor Debian Last vendor Modification 2019-05-24
Severity (Vendor) N/A Revision 1

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:N/I:N/A:P)
Cvss Base Score 4.3 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


A vulnerability was found in the WPA protocol implementation found in wpa_supplication (station) and hostapd (access point).

The EAP-pwd implementation in hostapd (EAP server) and wpa_supplicant (EAP peer) doesn't properly validate fragmentation reassembly state when receiving an unexpected fragment. This could lead to a process crash due to a NULL pointer derefrence.

An attacker in radio range of a station or access point with EAP-pwd support could cause a crash of the relevant process (wpa_supplicant or hostapd), ensuring a denial of service.

For the stable distribution (stretch), this problem has been fixed in version 2:2.4-1+deb9u4.

We recommend that you upgrade your wpa packages.

For the detailed security status of wpa please refer to its security tracker page at: https://security-tracker.debian.org/tracker/wpa

Original Source

Url : http://www.debian.org/security/2019/dsa-4450

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-476 NULL Pointer Dereference

CPE : Common Platform Enumeration

Application 43
Application 39

Alert History

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Date Informations
2019-05-24 17:18:19
  • First insertion