what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

Ubuntu Security Notice USN-2950-3

Ubuntu Security Notice USN-2950-3
Posted May 5, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2950-3 - USN-2950-1 fixed vulnerabilities in Samba. The fixes introduced in Samba 4.3.8 caused certain regressions and interoperability issues. This update resolves some of these issues by updating to Samba 4.3.9 in Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. Backported regression fixes were added to Samba 3.6.25 in Ubuntu 12.04 LTS. This advisory was inadvertently published as USN-2950-2 originally. Various other issues were also addressed.

tags | advisory, vulnerability
systems | linux, ubuntu
advisories | CVE-2015-5370, CVE-2016-2110, CVE-2016-2111, CVE-2016-2112, CVE-2016-2113, CVE-2016-2114, CVE-2016-2115, CVE-2016-2118
SHA-256 | 9964099b1f206087f80df7cd7fa0e5270996486fe34e8197537e2d4ab769d4ab

Ubuntu Security Notice USN-2950-3

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2950-3
May 04, 2016

samba regressions
============================================================================

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

- Ubuntu 16.04 LTS
- Ubuntu 15.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

USN-2950-1 introduced regressions in Samba.

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

Details:

USN-2950-1 fixed vulnerabilities in Samba. The fixes introduced in Samba
4.3.8 caused certain regressions and interoperability issues.

This update resolves some of these issues by updating to Samba 4.3.9 in
Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. Backported regression
fixes were added to Samba 3.6.25 in Ubuntu 12.04 LTS.

This advisory was inadvertently published as USN-2950-2 originally.

Original advisory details:

Jouni Knuutinen discovered that Samba contained multiple flaws in the
DCE/RPC implementation. A remote attacker could use this issue to perform
a denial of service, downgrade secure connections by performing a man in
the middle attack, or possibly execute arbitrary code. (CVE-2015-5370)
Stefan Metzmacher discovered that Samba contained multiple flaws in the
NTLMSSP authentication implementation. A remote attacker could use this
issue to downgrade connections to plain text by performing a man in the
middle attack. (CVE-2016-2110)
Alberto Solino discovered that a Samba domain controller would establish a
secure connection to a server with a spoofed computer name. A remote
attacker could use this issue to obtain sensitive information.
(CVE-2016-2111)
Stefan Metzmacher discovered that the Samba LDAP implementation did not
enforce integrity protection. A remote attacker could use this issue to
hijack LDAP connections by performing a man in the middle attack.
(CVE-2016-2112)
Stefan Metzmacher discovered that Samba did not validate TLS certificates.
A remote attacker could use this issue to spoof a Samba server.
(CVE-2016-2113)
Stefan Metzmacher discovered that Samba did not enforce SMB signing even if
configured to. A remote attacker could use this issue to perform a man in
the middle attack. (CVE-2016-2114)
Stefan Metzmacher discovered that Samba did not enable integrity protection
for IPC traffic. A remote attacker could use this issue to perform a man in
the middle attack. (CVE-2016-2115)
Stefan Metzmacher discovered that Samba incorrectly handled the MS-SAMR and
MS-LSAD protocols. A remote attacker could use this flaw with a man in the
middle attack to impersonate users and obtain sensitive information from
the Security Account Manager database. This flaw is known as Badlock.
(CVE-2016-2118)
Samba has been updated to 4.3.8 in Ubuntu 14.04 LTS and Ubuntu 15.10.
Ubuntu 12.04 LTS has been updated to 3.6.25 with backported security fixes.
In addition to security fixes, the updated packages contain bug fixes,
new features, and possibly incompatible changes. Configuration changes may
be required in certain environments.

Update instructions:

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

Ubuntu 16.04 LTS:
samba 2:4.3.9+dfsg-0ubuntu0.16.04.1

Ubuntu 15.10:
samba 2:4.3.9+dfsg-0ubuntu0.15.10.1

Ubuntu 14.04 LTS:
samba 2:4.3.9+dfsg-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
samba 2:3.6.25-0ubuntu0.12.04.3

This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.

References:
http://www.ubuntu.com/usn/usn-2950-3
http://www.ubuntu.com/usn/usn-2950-1
https://launchpad.net/bugs/1577739

Package Information:
https://launchpad.net/ubuntu/+source/samba/2:4.3.9+dfsg-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/samba/2:4.3.9+dfsg-0ubuntu0.15.10.1
https://launchpad.net/ubuntu/+source/samba/2:4.3.9+dfsg-0ubuntu0.14.04.1
https://launchpad.net/ubuntu/+source/samba/2:3.6.25-0ubuntu0.12.04.3
Login or Register to add favorites

File Archive:

February 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Feb 1st
    16 Files
  • 2
    Feb 2nd
    19 Files
  • 3
    Feb 3rd
    0 Files
  • 4
    Feb 4th
    0 Files
  • 5
    Feb 5th
    24 Files
  • 6
    Feb 6th
    2 Files
  • 7
    Feb 7th
    10 Files
  • 8
    Feb 8th
    25 Files
  • 9
    Feb 9th
    37 Files
  • 10
    Feb 10th
    0 Files
  • 11
    Feb 11th
    0 Files
  • 12
    Feb 12th
    17 Files
  • 13
    Feb 13th
    20 Files
  • 14
    Feb 14th
    25 Files
  • 15
    Feb 15th
    15 Files
  • 16
    Feb 16th
    6 Files
  • 17
    Feb 17th
    0 Files
  • 18
    Feb 18th
    0 Files
  • 19
    Feb 19th
    35 Files
  • 20
    Feb 20th
    25 Files
  • 21
    Feb 21st
    0 Files
  • 22
    Feb 22nd
    0 Files
  • 23
    Feb 23rd
    0 Files
  • 24
    Feb 24th
    0 Files
  • 25
    Feb 25th
    0 Files
  • 26
    Feb 26th
    0 Files
  • 27
    Feb 27th
    0 Files
  • 28
    Feb 28th
    0 Files
  • 29
    Feb 29th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close