USN-3827-1: Samba vulnerabilities

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

Florian Stuelpner discovered that Samba incorrectly handled CNAME records.
A remote attacker could use this issue to cause Samba to crash, resulting
in a denial of service. (CVE-2018-14629)

Alex MacCuish discovered that Samba incorrectly handled memory when
configured to accept smart-card authentication. A remote attacker could
possibly use this issue to cause Samba to crash, resulting in a denial of
service. (CVE-2018-16841)

Garming Sam discovered that Samba incorrectly handled memory when
processing LDAP searches. A remote attacker could possibly use this issue
to cause Samba to crash, resulting in a denial of service. (CVE-2018-16851)

Update instructions

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

Ubuntu 18.10

• samba - 2:4.8.4+dfsg-2ubuntu2.1

Ubuntu 18.04

• samba - 2:4.7.6+dfsg~ubuntu-0ubuntu2.5

Ubuntu 16.04

• samba - 2:4.3.11+dfsg-0ubuntu0.16.04.18

Ubuntu 14.04

• samba - 2:4.3.11+dfsg-0ubuntu0.14.04.19

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

References

• CVE-2018-14629
• CVE-2018-16841
• CVE-2018-16851

Related notices

• USN-3827-2: samba