USN-3455-1: wpa_supplicant and hostapd vulnerabilities

Ubuntu Security Notice USN-3455-1

16th October, 2017

wpa vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in wpa_supplicant.

Software description

  • wpa
    – client support for WPA and WPA2

Details

Mathy Vanhoef discovered that wpa_supplicant and hostapd incorrectly
handled WPA2. A remote attacker could use this issue with key
reinstallation attacks to obtain sensitive information. (CVE-2017-13077,
CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081,
CVE-2017-13082, CVE-2017-13086, CVE-2017-13087, CVE-2017-13088)

Imre Rad discovered that wpa_supplicant and hostapd incorrectly handled
invalid characters in passphrase parameters. A remote attacker could use
this issue to cause a denial of service. (CVE-2016-4476)

Imre Rad discovered that wpa_supplicant and hostapd incorrectly handled
invalid characters in passphrase parameters. A local attacker could use
this issue to cause a denial of service, or possibly execute arbitrary
code. (CVE-2016-4477)

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 17.04:
hostapd

2.4-0ubuntu9.1
wpasupplicant

2.4-0ubuntu9.1
Ubuntu 16.04 LTS:
hostapd

2.4-0ubuntu6.2
wpasupplicant

2.4-0ubuntu6.2
Ubuntu 14.04 LTS:
hostapd

2.1-0ubuntu1.5
wpasupplicant

2.1-0ubuntu1.5

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

CVE-2016-4476,

CVE-2016-4477,

CVE-2017-13077,

CVE-2017-13078,

CVE-2017-13079,

CVE-2017-13080,

CVE-2017-13081,

CVE-2017-13082,

CVE-2017-13086,

CVE-2017-13087,

CVE-2017-13088


Source From: ubuntu.com.
Original article title: USN-3455-1: wpa_supplicant and hostapd vulnerabilities.
This full article can be read at: USN-3455-1: wpa_supplicant and hostapd vulnerabilities.

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