CVE-2019-16275
Published: 13 September 2019
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
wpa Launchpad, Ubuntu, Debian |
bionic |
Released
(2:2.6-15ubuntu2.5)
|
| disco |
Released
(2:2.6-21ubuntu3.3)
|
|
| trusty |
Released
(2.1-0ubuntu1.7+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Needs triage
|
|
| xenial |
Released
(2.4-0ubuntu6.6)
|
|
|
Patches: upstream: https://w1.fi/security/2019-7/0001-AP-Silently-ignore-management-frame-from-unexpected-.patch |
||
|
wpasupplicant Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| disco |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| 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
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16275
- https://w1.fi/security/2019-7/ap-mode-pmf-disconnection-protection-bypass.txt
- https://www.openwall.com/lists/oss-security/2019/09/11/7
- https://ubuntu.com/security/notices/USN-4136-1
- https://ubuntu.com/security/notices/USN-4136-2
- NVD
- Launchpad
- Debian