Accensus Security Group has discovered a vulnerability in Xlight FTP Server, which can be exploited by malicious users to disclose potentially sensitive information.
The vulnerability is caused due to the SFTP/SSH2 virtual server not properly verifying input before reading files. This can be exploited to disclose the contents of arbitrary files via directory traversal attacks.
NOTE: The FTP virtual server is not affected by this vulnerability.
The vulnerability is confirmed in version 3.5.0. Other versions may also be affected.
Solution: Update to version 3.6.0.
Provided and/or discovered by: Accensus Security Group
Original Advisory: Xlight:
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Subject: Xlight FTP Server "SFTP" Directory Traversal Vulnerability
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