USN-3939-1: Samba vulnerability

Releases

• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

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

Details

Michael Hanselmann discovered that Samba incorrectly handled registry
files. A remote attacker could possibly use this issue to create new
registry files outside of the share, contrary to expectations.

Update instructions

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

Ubuntu 18.10

• libsmbclient - 2:4.8.4+dfsg-2ubuntu2.3
• samba - 2:4.8.4+dfsg-2ubuntu2.3

Ubuntu 18.04

• libsmbclient - 2:4.7.6+dfsg~ubuntu-0ubuntu2.9
• samba - 2:4.7.6+dfsg~ubuntu-0ubuntu2.9

Ubuntu 16.04

• libsmbclient - 2:4.3.11+dfsg-0ubuntu0.16.04.19
• samba - 2:4.3.11+dfsg-0ubuntu0.16.04.19

Ubuntu 14.04

• libsmbclient - 2:4.3.11+dfsg-0ubuntu0.14.04.20
• samba - 2:4.3.11+dfsg-0ubuntu0.14.04.20

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

References

• CVE-2019-3880

Related notices

• USN-3939-2: samba, libsmbclient