CVE-2017-12705 in WebOP
Summary
by MITRE
A Heap-Based Buffer Overflow issue was discovered in Advantech WebOP. A maliciously crafted project file may be able to trigger a heap-based buffer overflow, which may crash the process and allow an attacker to execute arbitrary code.
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Analysis
by VulDB Data Team • 11/30/2019
The vulnerability identified as CVE-2017-12705 represents a critical heap-based buffer overflow in Advantech WebOP software, a industrial automation and monitoring platform widely deployed in manufacturing environments. This flaw exists within the project file parsing mechanism where insufficient input validation allows attackers to craft malicious project files that can trigger memory corruption. The vulnerability falls under the Common Weakness Enumeration category CWE-121, which specifically addresses heap-based buffer overflow conditions where insufficient boundary checking permits writing beyond allocated memory regions. The affected software operates in industrial control systems where reliability and security are paramount, making this vulnerability particularly dangerous as it could compromise the integrity of critical infrastructure operations.
The technical exploitation of this vulnerability occurs when the WebOP application processes a specially crafted project file containing oversized data structures that exceed the allocated heap memory boundaries. When the parsing routine attempts to copy or process this malformed data, it overwrites adjacent memory locations, potentially corrupting program execution flow and heap metadata. This memory corruption can manifest as application crashes, denial of service conditions, or more critically, provide attackers with opportunities to inject and execute arbitrary code within the context of the running WebOP process. The vulnerability demonstrates characteristics consistent with CWE-787, which describes out-of-bounds write conditions that can lead to arbitrary code execution through memory corruption attacks.
The operational impact of this vulnerability extends beyond simple system instability to potentially compromise industrial control systems that rely on Advantech WebOP for monitoring and management. Attackers who successfully exploit this vulnerability could gain unauthorized access to industrial processes, potentially leading to production disruptions, data manipulation, or even physical safety hazards in environments where automation controls are critical. The vulnerability affects the software's ability to handle user-provided input through project files, creating an attack surface where malicious actors could upload or distribute compromised project files to target systems. This represents a significant concern for organizations implementing industrial internet of things solutions where the WebOP platform serves as a central monitoring interface for operational technology infrastructure.
Mitigation strategies for CVE-2017-12705 should focus on immediate software updates from Advantech addressing the buffer overflow conditions in the project file parser. Organizations should implement strict input validation measures and sanitize all project files before processing, particularly in environments where external file uploads are permitted. Network segmentation and access controls should limit exposure of WebOP systems to untrusted networks, while monitoring systems should be deployed to detect unusual process behavior or memory corruption patterns that may indicate exploitation attempts. The vulnerability aligns with attack patterns described in the MITRE ATT&CK framework under the T1059 technique for command and scripting interpreter, where adversaries may leverage such memory corruption vulnerabilities to execute malicious code within target systems. Regular security assessments of industrial control systems should include vulnerability scanning for similar heap-based buffer overflow conditions to prevent similar exploitation opportunities.