CVE-2007-3969 in Panda
Summary
by MITRE
Buffer overflow in Panda Antivirus before 20070720 allows remote attackers to execute arbitrary code via a crafted EXE file, resulting from an "Integer Cast Around."
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Analysis
by VulDB Data Team • 07/22/2019
The vulnerability identified as CVE-2007-3969 represents a critical buffer overflow flaw discovered in Panda Antivirus software prior to version 20070720. This security weakness stems from an integer cast around issue that occurs during the processing of executable files, creating a scenario where malicious actors can exploit the software's handling of file data to gain unauthorized system access. The vulnerability specifically affects the antivirus engine's ability to properly validate and process crafted executable files, leading to potential code execution on vulnerable systems.
The technical implementation of this flaw involves an integer cast around operation that occurs when Panda Antivirus processes EXE file headers and metadata. When the software encounters a specially crafted executable file, the integer conversion process fails to properly validate the data size, allowing an attacker to manipulate the buffer allocation logic. This integer overflow condition creates a situation where the application attempts to write data beyond the allocated memory buffer boundaries, potentially overwriting adjacent memory regions including critical program control structures such as return addresses or function pointers. The vulnerability falls under the CWE-190 category of Integer Overflow or Wraparound, which is a well-documented weakness in software security practices where integer arithmetic operations produce values that exceed the maximum representable value for the data type.
The operational impact of this vulnerability extends beyond simple remote code execution, as it represents a significant threat to enterprise security infrastructure. Organizations running affected versions of Panda Antivirus become vulnerable to targeted attacks where threat actors can craft malicious EXE files designed to exploit this specific buffer overflow condition. The remote exploitation capability means that attackers do not require physical access to systems, making this vulnerability particularly dangerous in networked environments where antivirus software serves as a primary defense mechanism. This vulnerability can be leveraged to establish persistent access, escalate privileges, or deploy additional malware payloads, effectively compromising the security posture of systems protected by the vulnerable antivirus solution.
From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1059.001 for Command and Scripting Interpreter, as successful exploitation would allow adversaries to execute arbitrary code on target systems. The attack surface is particularly concerning given that antivirus software typically runs with elevated privileges and has broad system access, making exploitation of such vulnerabilities particularly impactful. Security professionals should note that this vulnerability demonstrates the importance of proper input validation and memory management practices in security software, as the same principles that protect against buffer overflows in general applications also apply to security tools themselves. Organizations must prioritize patch management and ensure that antivirus solutions are kept up to date with the latest security fixes to mitigate this and similar vulnerabilities.
The remediation approach for CVE-2007-3969 requires immediate deployment of the security update released by Panda Software in version 20070720, which addresses the integer cast around issue through proper bounds checking and input validation. System administrators should conduct comprehensive vulnerability assessments to identify all systems running affected versions of Panda Antivirus and ensure that all endpoints are properly patched. Additionally, network monitoring should be enhanced to detect potential exploitation attempts through anomalous file processing patterns or unusual network activity that might indicate successful exploitation of this vulnerability.