SecurityTracker.com
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


 


Category:   Application (VPN)  >   OpenSSH Vendors:   OpenSSH.org
(Ubuntu Issues Fix) OpenSSH sftp-server Access Control Flaw Lets Remote Authenticated Users Create Zero-Length Files on the Target System
SecurityTracker Alert ID:  1040259
SecurityTracker URL:  http://securitytracker.com/id/1040259
CVE Reference:   CVE-2017-15906   (Links to External Site)
Date:  Jan 22 2018
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 7.6
Description:   A vulnerability was reported in OpenSSH. A remote authenticated user can cause denial of service conditions on the target system.

A remote authenticated user can exploit a flaw in the process_open() function in sftp-server when in read-only mode to cause the target service to create zero-length files.

Michal Zalewski reported this vulnerability.

Impact:   A remote authenticated user can cause zero-length files to be created on the target system.
Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

https://www.ubuntu.com/usn/usn-3538-1

Vendor URL:  www.ubuntu.com/usn/usn-3538-1 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  14.04 LTS, 16.04 LTS, 17.10

Message History:   This archive entry is a follow-up to the message listed below.
Oct 4 2017 OpenSSH sftp-server Access Control Flaw Lets Remote Authenticated Users Create Zero-Length Files on the Target System



 Source Message Contents



[Original Message Not Available for Viewing]


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2021, SecurityGlobal.net LLC