Auth bypass in W1.fi Hostapd

CVE-2019-5061

An exploitable denial-of-service vulnerability exists in the hostapd 2.6, where an attacker could trigger AP to send IAPP location updates for stations, before the required authentication process has completed. This could lead to different denial of service scenarios, either by causing CAM table attacks, or by leading to traffic flapping if faking already existing clients in other nearby Aps of the same wireless infrastructure. An attacker can forge Authentication and Association Request packets to trigger this vulnerability.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2019-5061: held from 0.009 to 0.009.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

  • W1.fi Hostapd — versions 2.6
  • W1.f1 — versions hostapd version 2.6 Ubiquiti AP-AC-Pro firmware 4.0.10.9653

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2019-5061?
CVE-2019-5061 is a medium-severity vulnerability in W1.fi Hostapd, classified under Expected Behavior Violation. CVSS score: 6.5/10. Published 2019-12-12.
How severe is CVE-2019-5061?
Medium severity. CVSS v3 base score is 6.5 out of 10.