![]() ![]() Please contact SolarWinds Customer Support with this information, and we will escalate for investigation.After a long period, we lastly discover another new release of the greatest FTP server for Home windows ever produced. If you observe this activity, investigate these processes further, and any traffic originating from the It can also be checked by looking for recentlyĬreated files in C:\ProgramData\RhinoSoft\Serv-U\Users\Global Users, which appears to store Users tab of the Serv-U Management Console, as shown below. The addition of any unrecognized Global users to Serv-U.Any process with the following in the command line:.type > "C:\ProgramData\RhinoSoft\Serv-U\Users\Global.Spawning cmd.exe) with any of the following in the command line: Serv-U? Review your monitoring tools and/or EDR platforms for Serv-U.exe spawning anomalous Are you seeing potentially suspicious activity by Are you seeing potentially suspicious connections via SSH? Look for connections via SSH from theįollowing IP addresses, which have been reported as a potential indicator of attack by the threat actor:ĩ817619689 6823517832 2081133558 14434179162 97779758 Logs to assist with determining your situation.ģ. In the log file DebugSocketlog.txt you may see anĮxception, such as: 07] Tue 01Jun21 02:42:58 - EXCEPTION: C0000005 CSUSSHSocket::ProcessReceive() Type: 30 puchPayLoad = 0x041ec066 nPacketLength = 76 nBytesReceived = 80 nBytesUncompressed = 156 uchPaddingLength = 5 Exceptions may be thrown for other reasons so please collect the Please collect the DebugSocketlog.txt log file, which canīe found in the following locations: C:\ProgramData\RhinoSoft\Serv-U\DebugSocketlog.txt C:\ProgramFiles\RhinoSoft\Serv-U\DebugSocketlog.txt ![]() Please note, several reasons exist for exceptions to be thrown, so anĮxception itself is not necessarily an indicator of attack. When exploited, the vulnerability causes the Serv-U product to throw an exception and then intercepts theĮxception handling code to run commands. Is your environment throwing exceptions? This attack is a Return Oriented Programming (ROP)Īttack. The environment, the vulnerability does not exist.Ģ. Is SSH enabled for your Serv-U installation? If SSH is not enabled in The following steps are steps you can take to determine if your environment has been compromised:ġ. Serv-U 15.2.3 HF1 and all prior Serv-U versions Fixed Software Release Serv-U 15.2.3 HF2 If you are unable to install these updates, see the FAQ in this SecurityĪdvisory for information on how to help protect your system from this vulnerability.Īdditional details of the vulnerability will be published after giving customers sufficient time to upgrade for the Updates table below for the applicable update for your system. Serv-U version 15.2.3 hotfix (HF) 2 has been released. An attackerĬould then install programs view, change, or delete data or run programs on the affected system. Threat actor who successfully exploited this vulnerability could run arbitrary code with privileges. The vulnerability exists in the latest Serv-U version 15.2.3 HF1 released May 5, 2021, and all prior versions. Joint teams have mobilized to address it quickly. Indicates this vulnerability exploit involves a limited, targeted set of customers and a single threat actor, our SolarWinds was recently notified by Microsoft of a security vulnerability related to Serv-U Managed File TransferįTP and have developed a hotfix to resolve this vulnerability. UPDATE July 10, 2021: NOTE : This security vulnerability only affects Serv-U Managed File Transfer and Serv-U SecureįTP and does not affect any other SolarWinds or N-able You can also find additional details on the threat actor and their UPDATE July 13, 20201: We've provided additional Into an RSS Feed Reader, e.g., Outlook's RSS Subscriptions, to monitor updates). Notified when we update this page (note: you will need to cut and paste the "Subscribe to this RSS feed" URL Security Advisory Summary UPDATE July 15, 20201: You can Subscribe to this RSS Feed to be Released: JLast updated: JA ssigning CNA : SolarWinds Serv-U Remote Memory Escape Vulnerability ![]()
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