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
- USN-4454-2: samba, smbclient, samba-libs, swat, libsmbclient, libsmbsharemodes-dev, samba-dsdb-modules, samba-testsuite, registry-tools, winbind, samba-common, libparse-pidl-perl, libpam-winbind, samba-tools, samba-doc, libwbclient-dev, libsmbsharemodes0, samba-vfs-modules, libpam-smbpass, python-samba, libsmbclient-dev, samba-dev, libnss-winbind, libwbclient0, samba-doc-pdf, samba-common-bin