USN-4611-1: Samba vulnerabilities
2 November 2020
Several security issues were fixed in Samba.
Releases
Packages
- samba - SMB/CIFS file, print, and login server for Unix
Details
Steven French discovered that Samba incorrectly handled ChangeNotify
permissions. A remote attacker could possibly use this issue to obtain file
name information. (CVE-2020-14318)
Bas Alberts discovered that Samba incorrectly handled certain winbind
requests. A remote attacker could possibly use this issue to cause winbind
to crash, resulting in a denial of service. (CVE-2020-14323)
Francis Brosnan Blázquez discovered that Samba incorrectly handled certain
invalid DNS records. A remote attacker could possibly use this issue to
cause the DNS server to crash, resulting in a denial of service.
(CVE-2020-14383)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.10
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-4931-1: libsmbclient, samba-common-bin, libnss-winbind, smbclient, libsmbsharemodes-dev, libsmbsharemodes0, libpam-smbpass, samba-libs, samba, winbind, python-samba, libpam-winbind, libparse-pidl-perl, samba-dev, samba-vfs-modules, samba-testsuite, samba-common, libsmbclient-dev, libwbclient-dev, registry-tools, samba-doc, libwbclient0, samba-dsdb-modules