CVE-2014-9202 in WebAccess
Summary
by MITRE
Multiple stack-based buffer overflows in an unspecified DLL file in Advantech WebAccess before 8.0_20150816 allow remote attackers to execute arbitrary code via a crafted file that triggers long string arguments to functions.
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Analysis
by VulDB Data Team • 12/08/2024
The vulnerability identified as CVE-2014-9202 represents a critical stack-based buffer overflow condition affecting an unspecified dynamic link library within Advantech WebAccess software version 8.0 and earlier. This flaw resides in the software's handling of user-supplied input within a DLL component, creating a pathway for remote code execution attacks. The vulnerability specifically manifests when the application processes crafted files containing excessively long string arguments that exceed the allocated stack buffer space, leading to memory corruption and potential arbitrary code execution.
The technical implementation of this vulnerability involves improper input validation and bounds checking within the affected DLL module. When Advantech WebAccess processes files with malformed string data, the application fails to properly verify the length of input parameters before copying them into fixed-size stack buffers. This classic buffer overflow scenario occurs because the software does not implement adequate bounds checking mechanisms, allowing attackers to overwrite adjacent stack memory locations including return addresses and control data. The flaw demonstrates characteristics consistent with CWE-121 Stack-based Buffer Overflow, where insufficient bounds checking enables attackers to overwrite stack memory and potentially redirect program execution flow.
The operational impact of this vulnerability extends beyond simple remote code execution to encompass significant system compromise potential within industrial control environments where Advantech WebAccess is deployed. Attackers can leverage this vulnerability to execute malicious code with the privileges of the affected application process, potentially gaining unauthorized access to critical infrastructure systems. The remote nature of the attack vector means that adversaries can exploit this flaw without requiring physical access to the target system, making it particularly dangerous in networked industrial environments. The vulnerability affects the software's ability to process legitimate files, creating both security and availability concerns that could disrupt operational technology infrastructure.
Mitigation strategies for CVE-2014-9202 should prioritize immediate software updates to Advantech WebAccess version 8.0_20150816 or later, which contain patches addressing the buffer overflow conditions. Organizations should implement network segmentation and access controls to limit exposure of affected systems to untrusted networks and users. Input validation controls should be enhanced at network boundaries to filter out malformed files before they reach vulnerable applications. Security monitoring should include detection of unusual file processing patterns that might indicate exploitation attempts. The vulnerability's characteristics align with ATT&CK technique T1203, which describes exploitation of software vulnerabilities for privilege escalation and persistence. Additionally, this vulnerability demonstrates the importance of secure coding practices and input validation as outlined in the OWASP Top Ten and NIST Cybersecurity Framework, emphasizing the need for robust memory management and bounds checking in industrial control systems.