USN-4454-2: 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
USN-4454-1 fixed a vulnerability in Samba. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
Original advisory 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 14.04
Ubuntu 12.04
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-4454-1: winbind, smbclient, samba-dev, registry-tools, samba-dsdb-modules, samba-common-bin, python3-samba, libnss-winbind, python-samba, libparse-pidl-perl, samba-testsuite, samba, samba-libs, samba-common, libwbclient-dev, ctdb, libsmbclient, libsmbclient-dev, samba-vfs-modules, libpam-winbind, libwbclient0