Luigi Auriemma has discovered some vulnerabilities in WinCom LPD Total, which can be exploited by malicious people to bypass certain security restrictions, cause a DoS (Denial of Service), or compromise a vulnerable system.
1) A boundary error in the Line Printer Daemon (LPDService.exe) when processing print jobs with an overly long control file name can be exploited to cause a buffer overflow by sending a specially crafted print job to default port 515/TCP.
Successful exploitation may allow execution of arbitrary code, but requires knowledge of an existing printer queue name.
2) Two boundary errors in the Line Printer Daemon can be exploited to cause stack-based buffer overflows by sending specially crafted packets to default port 13500/TCP.
Successful exploitation allows execution of arbitrary code.
3) Missing authentication checks in the Line Printer Daemon can be exploited to perform certain actions on the service such as e.g. adding a printer queue, which can be used to aid in exploiting vulnerability #1.
The vulnerabilities are confirmed in version 188.8.131.523. Other versions may also be affected.
Solution: Restrict network access to the Line Printer Daemon service.
Provided and/or discovered by: Luigi Auriemma
Original Advisory: http://aluigi.altervista.org/adv/wincomalpd-adv.txt
Do you have additional information related to this advisory?
Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this
information to firstname.lastname@example.org
Subject: WinCom LPD Total Multiple Vulnerabilities
No posts yet
You must be logged in to post a comment.
Secunia Customer Login
Not a customer already?
Learn more about how our market leading Vulnerability Management solutions can help you manage risk and ensure compliance.