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CVE-2019-16275

Publication date 13 September 2019

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

hostapd before 2.10 and wpa_supplicant before 2.10 allow an incorrect indication of disconnection in certain situations because source address validation is mishandled. This is a denial of service that should have been prevented by PMF (aka management frame protection). The attacker must send a crafted 802.11 frame from a location that is within the 802.11 communications range. An attacker in radio range of the access point could inject a specially constructed unauthenticated IEEE 802.11 frame to the access point to cause associated stations to be disconnected and require a reconnection to the network.

Status

Package Ubuntu Release Status
wpa 19.04 disco
Fixed 2:2.6-21ubuntu3.3
18.04 LTS bionic
Fixed 2:2.6-15ubuntu2.5
16.04 LTS xenial
Fixed 2.4-0ubuntu6.6
14.04 LTS trusty
wpasupplicant 19.04 disco Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

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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 6.5 · Medium
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-4136-1
    • wpa_supplicant and hostapd vulnerability
    • 18 September 2019
    • USN-4136-2
    • wpa_supplicant and hostapd vulnerability
    • 18 September 2019

Other references