CVE-2016-4476

Publication date 9 May 2016

Last updated 25 August 2025

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

hostapd 0.6.7 through 2.5 and wpa_supplicant 0.6.7 through 2.5 do not reject \n and \r characters in passphrase parameters, which allows remote attackers to cause a denial of service (daemon outage) via a crafted WPS operation.

Status

Package Ubuntu Release Status
hostapd 21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
17.04 zesty Not in release
16.10 yakkety Not in release
16.04 LTS xenial Not in release
15.10 wily Not in release
15.04 vivid Not in release
14.04 LTS trusty Not in release
12.04 LTS precise Ignored end of life
wpa 21.04 hirsute
Fixed 2.4-0ubuntu10
20.10 groovy
Fixed 2.4-0ubuntu10
20.04 LTS focal
Fixed 2.4-0ubuntu10
19.10 eoan
Fixed 2.4-0ubuntu10
19.04 disco
Fixed 2.4-0ubuntu10
18.10 cosmic
Fixed 2.4-0ubuntu10
18.04 LTS bionic
Fixed 2.4-0ubuntu10
17.10 artful
Fixed 2.4-0ubuntu10
17.04 zesty
Fixed 2.4-0ubuntu9.1
16.10 yakkety Ignored end of life
16.04 LTS xenial
Fixed 2.4-0ubuntu6.2
15.10 wily Ignored end of life
14.04 LTS trusty
Fixed 2.1-0ubuntu1.5
12.04 LTS precise Not in release
wpasupplicant 21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
17.04 zesty Not in release
16.10 yakkety Not in release
16.04 LTS xenial Not in release
15.10 wily Not in release
15.04 vivid Not in release
14.04 LTS trusty Not in release
12.04 LTS precise Ignored end of life

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
wpa

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3455-1
    • wpa_supplicant and hostapd vulnerabilities
    • 16 October 2017

Other references