Executive Summary

Summary
Title Samba regressions
Informations
Name USN-2950-3 First vendor Publication 2016-05-04
Vendor Ubuntu Last vendor Modification 2016-05-04
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 : (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

Original Source

Url : http://www.ubuntu.com/usn/USN-2950-3

CWE : Common Weakness Enumeration

% Id Name
86 % CWE-254 Security Features
14 % CWE-310 Cryptographic Issues

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 327
Os 6
Os 2

Nessus® Vulnerability Scanner

Date Description
2017-05-01 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2016-1014.nasl - Type : ACT_GATHER_INFO
2016-12-27 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201612-47.nasl - Type : ACT_GATHER_INFO
2016-08-30 Name : The remote device is missing a vendor-supplied security patch.
File : f5_bigip_SOL53313971.nasl - Type : ACT_GATHER_INFO
2016-06-10 Name : The remote Debian host is missing a security update.
File : debian_DLA-509.nasl - Type : ACT_GATHER_INFO
2016-06-01 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-659.nasl - Type : ACT_GATHER_INFO
2016-05-26 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2950-5.nasl - Type : ACT_GATHER_INFO
2016-05-19 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2950-4.nasl - Type : ACT_GATHER_INFO
2016-05-12 Name : The remote device is missing a vendor-supplied security patch.
File : f5_bigip_SOL37603172.nasl - Type : ACT_GATHER_INFO
2016-05-05 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2950-3.nasl - Type : ACT_GATHER_INFO
2016-05-02 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2950-2.nasl - Type : ACT_GATHER_INFO
2016-04-22 Name : The remote Fedora host is missing a security update.
File : fedora_2016-383fce04e2.nasl - Type : ACT_GATHER_INFO
2016-04-21 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-490.nasl - Type : ACT_GATHER_INFO
2016-04-21 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1105-1.nasl - Type : ACT_GATHER_INFO
2016-04-19 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2950-1.nasl - Type : ACT_GATHER_INFO
2016-04-18 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-462.nasl - Type : ACT_GATHER_INFO
2016-04-18 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2016-106-02.nasl - Type : ACT_GATHER_INFO
2016-04-15 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1028-1.nasl - Type : ACT_GATHER_INFO
2016-04-15 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1024-1.nasl - Type : ACT_GATHER_INFO
2016-04-15 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1023-1.nasl - Type : ACT_GATHER_INFO
2016-04-15 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-1022-1.nasl - Type : ACT_GATHER_INFO
2016-04-15 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0614.nasl - Type : ACT_GATHER_INFO
2016-04-14 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3548.nasl - Type : ACT_GATHER_INFO
2016-04-14 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-453.nasl - Type : ACT_GATHER_INFO
2016-04-14 Name : The remote Fedora host is missing a security update.
File : fedora_2016-be53260726.nasl - Type : ACT_GATHER_INFO
2016-04-14 Name : The remote Fedora host is missing a security update.
File : fedora_2016-48b3761baa.nasl - Type : ACT_GATHER_INFO
2016-04-14 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2016-686.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2016-0612.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2016-0611.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2016-0613.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2016-0621.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_a636fc2600d911e6b704000c292e4fd8.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2016-0611.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2016-0612.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2016-0613.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2016-0621.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0611.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0612.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0613.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0618.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0619.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0620.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0621.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0623.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2016-0624.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Samba server is affected by multiple vulnerabilities.
File : samba_4_3_7.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : An SMB server running on the remote host is affected by the Badlock vulnerabi...
File : samba_badlock.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20160412_samba3x_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20160412_samba_and_samba4_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20160412_samba_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2016-04-13 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20160412_samba_on_SL6_x.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
3
4
Date Informations
2016-07-07 21:27:02
  • Multiple Updates
2016-06-03 09:40:34
  • Multiple Updates
2016-05-27 13:27:33
  • Multiple Updates
2016-05-06 13:32:24
  • Multiple Updates
2016-05-04 21:27:28
  • First insertion