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AUSCERT External Security Bulletin Redistribution
ESB-2018.0732.2
Samba vulnerabilities
26 March 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: samba
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Administrator Compromise -- Existing Account
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-1057 CVE-2018-1050
Reference: ESB-2018.0731
Original Bulletin:
http://www.ubuntu.com/usn/usn-3595-1
http://www.ubuntu.com/usn/usn-3595-2
Revision History: March 26 2018: Addition of Ubuntu 12.04 ESM
March 14 2018: Initial Release
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USN-3595-1: Samba vulnerabilities
13 March 2018
samba vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
* Ubuntu 17.10
* Ubuntu 16.04 LTS
* Ubuntu 14.04 LTS
Summary
Several security issues were fixed in Samba.
Software Description
* samba - SMB/CIFS file, print, and login server for Unix
Details
Bjorn Baumbach discovered that Samba incorrectly validated permissions when
changing account passwords via LDAP. An authenticated attacker could use this
issue to change the password of other users, including administrators, and
perform actions as those users. (CVE-2018-1057)
It was discovered that Samba incorrectly validated inputs to the RPC spoolss
service. An authenticated attacker could use this issue to cause the service to
crash, resulting in a denial of service. (CVE-2018-1050)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 17.10
samba - 2:4.6.7+dfsg-1ubuntu3.2
samba-dsdb-modules - 2:4.6.7+dfsg-1ubuntu3.2
Ubuntu 16.04 LTS
samba - 2:4.3.11+dfsg-0ubuntu0.16.04.13
samba-dsdb-modules - 2:4.3.11+dfsg-0ubuntu0.16.04.13
Ubuntu 14.04 LTS
samba - 2:4.3.11+dfsg-0ubuntu0.14.04.14
samba-dsdb-modules - 2:4.3.11+dfsg-0ubuntu0.14.04.14
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
* CVE-2018-1050
* CVE-2018-1057
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Ubuntu Security Notice USN-3595-2
March 23, 2018
samba vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 12.04 ESM
Summary:
Samba could be made to crash if it received specially crafted
input.
Software Description:
- - samba: SMB/CIFS file, print, and login server for Unix
Details:
USN-3595-1 fix a vulnerability in Samba. This update provides
the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
It was discovered that Samba incorrectly validated inputs to the RPC
poolss service. An authenticated attacker could use this issue to
ause the service to crash, resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 ESM:
samba - 2:3.6.25-0ubuntu0.12.04.15
In general, a standard system update will make all the necessary
changes.
References:
 https://usn.ubuntu.com/usn/usn-3595-2
 https://usn.ubuntu.com/usn/usn-3595-1
 CVE-2018-1050
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