What is CVE-2016-4476?

CVE-2016-4476 is a high-severity vulnerability in W1.fi Hostapd, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-05-09.

How severe is CVE-2016-4476?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in W1.fi Hostapd

CVE-2016-4476

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.007 (71.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

W1.fi Hostapd
W1.fi Wpa_supplicant
Canonical Ubuntu_linux — versions 14.04, 16.04, 17.04
N/a — versions n/a

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

[oss-security] 20160503 Re: hostapd/wpa_supplicant - psk configuration parameter update allowing arbitrary data to be written (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
USN-3455-1 (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2016-4476?: CVE-2016-4476 is a high-severity vulnerability in W1.fi Hostapd, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-05-09.
How severe is CVE-2016-4476?: High severity. CVSS v3 base score is 7.5 out of 10.