samba vulnerabilities

13 March 2018

samba vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 17.10
• Ubuntu 16.04 LTS
• Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Samba.

Software Description

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

Details

Björn Baumbach discovered that Samba incorrectly validated permissions when changing account passwords via LDAP. An authenticated attacker could use this issue to change the password of other users, including administrators, and perform actions as those users. (CVE-2018-1057)

It was discovered that Samba incorrectly validated inputs to the RPC spoolss service. An authenticated attacker could use this issue to cause the service to crash, resulting in a denial of service. (CVE-2018-1050)

Update instructions

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

Ubuntu 17.10

samba - 2:4.6.7+dfsg-1ubuntu3.2

samba-dsdb-modules - 2:4.6.7+dfsg-1ubuntu3.2

Ubuntu 16.04 LTS

samba - 2:4.3.11+dfsg-0ubuntu0.16.04.13

samba-dsdb-modules - 2:4.3.11+dfsg-0ubuntu0.16.04.13

Ubuntu 14.04 LTS

samba - 2:4.3.11+dfsg-0ubuntu0.14.04.14

samba-dsdb-modules - 2:4.3.11+dfsg-0ubuntu0.14.04.14

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2018-1050
• CVE-2018-1057