Executive Summary

Summary
Title Samba regression
Informations
Name USN-3242-2 First vendor Publication 2017-03-30
Vendor Ubuntu Last vendor Modification 2017-03-30
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 16.10 - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS

Summary:

USN-3242-1 introduced a regression in Samba.

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

Details:

USN-3242-1 fixed a vulnerability in Samba. The upstream fix introduced a regression when Samba is configured to disable following symbolic links.

This update fixes the problem.

Original advisory details:

Jann Horn discovered that Samba incorrectly handled symlinks. An
authenticated remote attacker could use this issue to access files on the
server outside of the exported directories.

Update instructions:

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

Ubuntu 16.10:
samba 2:4.4.5+dfsg-2ubuntu5.5

Ubuntu 16.04 LTS:
samba 2:4.3.11+dfsg-0ubuntu0.16.04.6

Ubuntu 14.04 LTS:
samba 2:4.3.11+dfsg-0ubuntu0.14.04.7

Ubuntu 12.04 LTS:
samba 2:3.6.25-0ubuntu0.12.04.10

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

References:
http://www.ubuntu.com/usn/usn-3242-2
http://www.ubuntu.com/usn/usn-3242-1
https://launchpad.net/bugs/1675698

Package Information:
https://launchpad.net/ubuntu/+source/samba/2:4.4.5+dfsg-2ubuntu5.5
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.16.04.6
https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-0ubuntu0.14.04.7
https://launchpad.net/ubuntu/+source/samba/2:3.6.25-0ubuntu0.12.04.10

Original Source

Url : http://www.ubuntu.com/usn/USN-3242-2

Alert History

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0
1
Date Informations
2017-04-01 13:25:06
  • Multiple Updates
2017-03-30 21:22:44
  • First insertion