Ubuntu alert USN-4341-3 (samba)

From:
             
 
Marc Deslauriers <marc.deslauriers@canonical.com> 
To:
             
 
ubuntu-security-announce@lists.ubuntu.com 
Subject:
             
 
[USN-4341-3] Samba regression 
Date:
             
 
Wed, 29 Apr 2020 11:07:09 -0400
Message-ID:
             
 
<60b7863b-9870-f8f1-e869-97feec5045bb@canonical.com>
==========================================================================
Ubuntu Security Notice USN-4341-3
April 29, 2020

samba regression
==========================================================================

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

- Ubuntu 16.04 LTS

Summary:

USN-4341-1 introduced a regression in Samba.

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

Details:

USN-4341-1 fixed vulnerabilities in Samba. The updated packages for
Ubuntu 16.04 LTS introduced a regression when using LDAP. This update fixes
the problem.

We apologize for the inconvenience.

Original advisory details:

 It was discovered that Samba incorrectly handled certain LDAP queries. A
 remote attacker could possibly use this issue to cause Samba to consume
 resources, resulting in a denial of service. (CVE-2020-10704)

Update instructions:

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

Ubuntu 16.04 LTS:
  samba                           2:4.3.11+dfsg-0ubuntu0.16.04.27

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

References:
  https://usn.ubuntu.com/4341-3
  https://usn.ubuntu.com/4341-1
  https://launchpad.net/bugs/1875798

Package Information:
  https://launchpad.net/ubuntu/+source/samba/2:4.3.11+dfsg-...

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