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:
- Serv-U Installation and Upgrade Guide
- Serv-U 15.2 Administrator Guide
- System Requirements
- Getting Started with Serv-U
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 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) |
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