USN-4454-1: Samba vulnerability

10 August 2020

Samba could be made to crash if it received specially crafted network traffic.

Releases

Packages

  • samba - SMB/CIFS file, print, and login server for Unix

Details

Martin von Wittich and Wilko Meyer discovered that Samba incorrectly
handled certain empty UDP packets when being used as a AD DC NBT server. A
remote attacker could possibly use this issue to cause Samba to crash,
resulting in a denial of service.

Update instructions

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

Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

In general, a standard system update will make all the necessary changes.

References

Related notices