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USN-4757-2: wpa_supplicant and hostapd vulnerability

4 March 2021

wpa_supplicant could be made to crash or run programs if it received specially crafted network traffic.

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Releases

Packages

  • wpa - client support for WPA and WPA2

Details

USN-4757-1 fixed a vulnerability in wpa_supplicant and hostapd. This update
provides the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that wpa_supplicant did not properly handle P2P
(Wi-Fi Direct) provision discovery requests in some situations. A
physically proximate attacker could use this to cause a denial of service
or possibly execute arbitrary code.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 14.04

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

References

Related notices

  • USN-4757-1: wpa, wpasupplicant, hostapd, wpasupplicant-udeb, wpagui