Executive Summary

Summary
Title Samba vulnerabilities
Informations
Name USN-3426-1 First vendor Publication 2017-09-21
Vendor Ubuntu Last vendor Modification 2017-09-21
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 17.04 - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS

Summary:

Samba could be made to expose sensitive information over the network.

Software Description: - samba: SMB/CIFS file, print, and login server for Unix

Details:

Stefan Metzmacher discovered that Samba incorrectly enforced SMB signing in certain situations. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2017-12150)

Stefan Metzmacher discovered that Samba incorrectly handled encryption across DFS redirects. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2017-12151)

Yihan Lian and Zhibin Hu discovered that Samba incorrectly handled memory when SMB1 is being used. A remote attacker could possibly use this issue to obtain server memory contents. (CVE-2017-12163)

Update instructions:

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

Ubuntu 17.04:
samba 2:4.5.8+dfsg-0ubuntu0.17.04.7

Ubuntu 16.04 LTS:
samba 2:4.3.11+dfsg-0ubuntu0.16.04.11

Ubuntu 14.04 LTS:
samba 2:4.3.11+dfsg-0ubuntu0.14.04.12

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

References:
https://www.ubuntu.com/usn/usn-3426-1
CVE-2017-12150, CVE-2017-12151, CVE-2017-12163

Package Information:
https://launchpad.net/ubuntu/+source/samba/2:4.5.8+dfsg-0ubuntu0.17.04.7
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.11
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.14.04.12

Original Source

Url : http://www.ubuntu.com/usn/USN-3426-1

Alert History

If you want to see full details history, please login or register.
0
1
Date Informations
2017-09-23 13:22:31
  • Multiple Updates
2017-09-21 21:23:04
  • First insertion