Debian Security Advisory

DLA-1922-1 wpa -- LTS security update

Date Reported:

16 Sep 2019

Affected Packages:

wpa

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 940080.
In Mitre's CVE dictionary: CVE-2019-16275.

More information:

hostapd (and wpa_supplicant when controlling AP mode) did not perform sufficient source address validation for some received Management frames and this could result in ending up sending a frame that caused associated stations to incorrectly believe they were disconnected from the network even if management frame protection (also known as PMF) was negotiated for the association. This could be considered to be a denial of service vulnerability since PMF is supposed to protect from this type of issues.

For Debian 8 Jessie, this problem has been fixed in version 2.3-1+deb8u9.

We recommend that you upgrade your wpa packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS