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Category:   Application (File Transfer/Sharing)  >   Samba Vendors:   Samba.org
(Ubuntu Issues Fix) Samba smbd Named Pipe Validation Flaw Lets Remote Authenticated Users Execute Arbitrary Code on the Target System
SecurityTracker Alert ID:  1038558
SecurityTracker URL:  http://securitytracker.com/id/1038558
CVE Reference:   CVE-2017-7494   (Links to External Site)
Date:  May 25 2017
Impact:   Execution of arbitrary code via network, Root access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.5.0 and after
Description:   A vulnerability was reported in Samba. A remote authenticated user can execute arbitrary code on the target system.

A remote authenticated user can upload a shared library to a writable share and then open a specially named pipe endpoint (containing a '/' character) cause the target system to execute the library with root privileges.

steelo reported this vulnerability.

Impact:   A remote authenticated user with write privileges on the target share can execute arbitrary code with root privileges on the target system.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

https://www.ubuntu.com/usn/usn-3296-1

Vendor URL:  www.ubuntu.com/usn/usn-3296-2 (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  12.04 ESM

Message History:   This archive entry is a follow-up to the message listed below.
May 24 2017 Samba smbd Named Pipe Validation Flaw Lets Remote Authenticated Users Execute Arbitrary Code on the Target System



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