Title: Xlight FTP Server PASS Command Remote Buffer Overflow Vulnerability
Severity: HIGH
Description:
XLight FTP Server is a commercially available FTP server. It is available for the Microsoft Windows platform.
A vulnerability has been identified in XLight FTP Server when handling certain types of requests. Because of this, it may be possible for a remote attacker to gain unauthorized access to a system running the vulnerable software. The condition is present due to insufficient boundary checking.
The issue presents itself when an attacker sends a specially crafted PASS command request containing an excessively long string value to the vulnerable server. Immediate consequences of an attack may result in a denial of service condition.
An attacker may leverage the issue by exploiting an unbounded memory copy operation to overwrite the saved return address/base pointer, causing an affected procedure to return to an address of their choice. Successful exploitation of this issue may allow an attacker to execute arbitrary code in the context of the vulnerable software in order to gain unauthorized access, however, this has not been confirmed at the moment.
Xlight FTP Server versions 1.41 and prior have been reported to be prone to this issue.
Affected Products:
- XLight FTP Server XLight FTP Server 1.25.0
- XLight FTP Server XLight FTP Server 1.41.0
References:
- SecurityTracker: Xlight FTP Server Buffer Overflow in PASS Command
- XLight FTP Server: Product Homepage
Juniper Networks provides this content via a wide variety of sources and production methods. If notified of errors or omissions in the content of this page, Juniper Networks, at its discretion, will modify or remove the page or leave the content as is, depending on various factors including but not limited to the reputation and authority of the party providing the notification. Please use the contact information displayed elsewhere on this page to report any errors or omissions regarding the content on this page.
