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Category:   Application (File Transfer/Sharing)  >   Samba Vendors:   Samba.org
(HPE Issues Fix for HP-UX) Samba Multiple Flaws Let Remote Users Hijack Connections and Remote Authenticated Users Obtain Potentially Sensitive Information
SecurityTracker Alert ID:  1040527
SecurityTracker URL:  http://securitytracker.com/id/1040527
CVE Reference:   CVE-2017-12150, CVE-2017-12151, CVE-2017-12163   (Links to External Site)
Date:  Mar 14 2018
Impact:   Disclosure of system information, Disclosure of user information, Modification of system information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to versions 4.4.16, 4.5.14, and 4.6.8
Description:   Several vulnerabilities were reported in Samba. A remote user can access data on the target system. A remote user can modify data on the target system. A remote authenticated user can obtain potentially sensitive information on the target system.

The system fails to require SMB signing in certain cases. A remote user can conduct a man-in-the-middle attack to hijack client connections and obtain potentially sensitive information [CVE-2017-12150]. Versions 3.0.25 to 4.6.7 are affected.

The client software does not properly sign and encrypt DFS redirects when the max protocol for the original connection is set as 'SMB3' [CVE-2017-12151]. Versions 4.1.0 to 4.6.7 are affected.

A remote authenticated user can send specially crafted SMB1 data to cause portions of server memory contents to be written to a file on the target Samba share or to a shared printer [CVE-2017-12163].

Yihan Lian and Zhibin Hu, security researchers with Qihoo 360 GearTeam, and Stefan Metzmacher of SerNet (https://samba.plus) reported these vulnerabilities.

Impact:   A remote user can access and modify data communicated between the client and server.

A remote authenticated user can obtain potentially sensitive information from server memory on the target system.

Solution:   HPE has issued a fix for CVE-2017-12150, CVE-2017-12151, and CVE-2017-12163 for HP-UX.

The HPE advisory is available at:

https://support.hpe.com/hpsc/doc/public/display?docId=hpesbux03817en_us

Vendor URL:  support.hpe.com/hpsc/doc/public/display?docId=hpesbux03817en_us (Links to External Site)
Cause:   Access control error, Authentication error
Underlying OS:  UNIX (HP/UX)

Message History:   This archive entry is a follow-up to the message listed below.
Sep 21 2017 Samba Multiple Flaws Let Remote Users Hijack Connections and Remote Authenticated Users Obtain Potentially Sensitive Information



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