CVE-2008-5176 in Wincom Mpd Total
Summary
by MITRE
Multiple buffer overflows in Client Software WinCom LPD Total 3.0.2.623 and earlier allow remote attackers to execute arbitrary code via (1) a long 0x02 command to the remote administration service on TCP port 13500 or (2) a long invalid control filename to LPDService.exe on TCP port 515.
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Analysis
by VulDB Data Team • 08/31/2019
The vulnerability identified as CVE-2008-5176 represents a critical security flaw affecting WinCom LPD Total client software versions 3.0.2.623 and earlier. This vulnerability manifests through multiple buffer overflow conditions that can be exploited remotely to achieve arbitrary code execution on affected systems. The flaw exists within the network service implementations that handle printer job processing and remote administration functions, making it particularly dangerous for enterprise environments where print services are commonly exposed to external networks.
The technical implementation of this vulnerability involves two distinct attack vectors that exploit buffer overflow conditions in different components of the software. The first vector targets the remote administration service running on TCP port 13500, where a specially crafted 0x02 command with excessive length data can cause a buffer overflow in the command processing routine. The second vector affects the LPDService.exe component listening on TCP port 515, where invalid control filenames exceeding buffer capacity trigger similar overflow conditions. Both attack scenarios leverage the fundamental flaw of insufficient input validation and bounds checking in the software's network protocol handlers, which are designed to process printer job data and administrative commands from remote clients.
From an operational perspective, this vulnerability presents significant risk to organizations relying on WinCom LPD Total for print management services. The remote execution capability means that attackers can exploit these flaws without requiring local system access, potentially allowing them to gain full control of affected systems. The attack surfaces are particularly concerning as TCP ports 13500 and 515 are commonly exposed in network environments, with port 515 being the standard port for Line Printer Daemon services. Organizations with these services accessible from the internet or untrusted networks face elevated risk of exploitation, potentially leading to complete system compromise and lateral movement within network perimeters.
The vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, which covers heap-based buffer overflow scenarios, depending on the specific implementation details of the affected code. From an adversary perspective, this vulnerability maps to ATT&CK technique T1203, representing exploitation of remote services, and T1059, indicating command and scripting interpreter usage for code execution. The attack requires minimal privileges and can be automated, making it attractive to threat actors seeking persistent access to networked environments. Network segmentation and proper firewall rules should be implemented to restrict access to these vulnerable ports, while regular patching of affected software versions remains the primary mitigation strategy.
Organizations should prioritize immediate remediation through official vendor patches or updates, as no reliable workarounds exist for this vulnerability without modifying core software functionality. System administrators should conduct comprehensive vulnerability assessments to identify all affected systems and implement network monitoring to detect potential exploitation attempts. The vulnerability demonstrates the critical importance of input validation and secure coding practices, particularly in network service implementations where untrusted data is processed from external sources. Regular security assessments and network scanning should be conducted to identify similar vulnerabilities in other print management services and network applications that may be susceptible to similar buffer overflow exploitation techniques.