Debian: DSA-4450-1: wpa security update
Summary
The EAP-pwd implementation in hostapd (EAP server) and wpa_supplicant (EAP
peer) doesn't properly validate fragmentation reassembly state when receiving
an unexpected fragment. This could lead to a process crash due to a NULL
pointer derefrence.
An attacker in radio range of a station or access point with EAP-pwd support
could cause a crash of the relevant process (wpa_supplicant or hostapd),
ensuring a denial of service.
For the stable distribution (stretch), this problem has been fixed in
version 2:2.4-1+deb9u4.
We recommend that you upgrade your wpa packages.
For the detailed security status of wpa please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/wpa
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org