Documentation forServ-U File Server

Serv-U File Server 15.2.4 Release Notes

Release date: August 20, 2021

These release notes describe the new features, improvements, and fixed issues in Serv-U File Server 15.2.4. They also provide information about upgrades and describe workarounds for known issues.

If you are looking for previous release notes for Serv-U File Server, see Previous Version documentation.

For details about the latest hotfixes, see Serv-U hotfixes.

Additional Serv-U documentation includes:

New features and improvements

Serv-U 15.2.4 is a security-focused release, and includes the following fixes:

  • Autologin issue fixed
  • HTTP upload/download issue with Linux fixed

 


Upgrade notes

Licensing

The Serv-U licensing framework was changed in Serv-U 15.2.3 and a new license key needs to be used to activate this product version otherwise it will not be possible to use it.

If your Serv-U product maintenance is active, you can find your new license key generated on customer portal. Use this new license key to activate Serv-U after installation.

SolarWinds strongly recommend that you upgrade to this version with the new licensing framework as older framework will not be supported in the future.

Password security

If you are upgrading from version 15.1.7 or older, increased password security and automatically converts existing MD5 passwords using a more secure algorithm when users connect for the first time after upgrade.

If an account is not used within 90 days of the upgrade, access will be restricted and the user will not be able to log in afterward. The administrator will be required to change their password.


Fixed issues

Serv-U 15.2.4 fixes the following issues:

Case Number Description
00852085, 00851378, 00845115, 00838243 Logging in with URL parameters issue resolved.
00848120 Remote memory escape vulnerability fixed
00825630, 00803670 Language selection issue fixed.

For Serv-U 15.2.3 fixes, see the 15.2.3 Release Notes.

For Serv-U 15.2.2 fixes, see the 15.2.2 Release Notes.

For Serv-U 15.2.1 fixes, see the 15.2.1 Release Notes.

For Serv-U 15.2 fixes, see the 15.2 Release Notes.

CVE fixed issues

SolarWinds would like to thank our Security Researchers below for reporting on this issue in a responsible manner and working with our security, product, and engineering teams to fix the vulnerability.

CVE-ID Vulnerability Title Description Severity Credit
CVE-2021-35211 Serv-U Remote Memory Escape Vulnerability Microsoft notified a Memory Escape Vulnerability in Serv-U Managed File Transfer Server and Serv-U Secured FTP. A threat actor who successfully exploited this vulnerability could run arbitrary code with privileges. Critical Microsoft Threat Intelligence Center (MSTIC) and Microsoft Offensive Security Research
CVE-2021-35223 Execute Command Function Allows Remote Code Execution (RCE) Vulnerability.

An attacker can abuse the FTP command SITE EXEC for command line obfuscation to conceal the payload which can launch Remote Code Execution (RCE) from the Serv-U Server.

See the SolarWinds knowledgebase article, Execute Command Function Allows Remote Code Execution (RCE) Vulnerability.

High Exodus Intelligence (exodusintel.com)

 


Legal notices

© 2021 SolarWinds Worldwide, LLC. All rights reserved.

This document may not be reproduced by any means nor modified, decompiled, disassembled, published or distributed, in whole or in part, or translated to any electronic medium or other means without the prior written consent of SolarWinds. All right, title, and interest in and to the software, services, and documentation are and shall remain the exclusive property of SolarWinds, its affiliates, and/or its respective licensors.

SOLARWINDS DISCLAIMS ALL WARRANTIES, CONDITIONS, OR OTHER TERMS, EXPRESS OR IMPLIED, STATUTORY OR OTHERWISE, ON THE DOCUMENTATION, INCLUDING WITHOUT LIMITATION NONINFRINGEMENT, ACCURACY, COMPLETENESS, OR USEFULNESS OF ANY INFORMATION CONTAINED HEREIN. IN NO EVENT SHALL SOLARWINDS, ITS SUPPLIERS, NOR ITS LICENSORS BE LIABLE FOR ANY DAMAGES, WHETHER ARISING IN TORT, CONTRACT OR ANY OTHER LEGAL THEORY, EVEN IF SOLARWINDS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

The SolarWinds, SolarWinds & Design, Orion, and THWACK trademarks are the exclusive property of SolarWinds Worldwide, LLC or its affiliates, are registered with the U.S. Patent and Trademark Office, and may be registered or pending registration in other countries. All other SolarWinds trademarks, service marks, and logos may be common law marks or are registered or pending registration. All other trademarks mentioned herein are used for identification purposes only and are trademarks of (and may be registered trademarks) of their respective companies.