CVE-2012-3811 in IP Office Customer Call Reporter
Summary
by MITRE
Unrestricted file upload vulnerability in ImageUpload.ashx in the Wallboard application in Avaya IP Office Customer Call Reporter 7.0 before 7.0.5.8 Q1 2012 Maintenance Release and 8.0 before 8.0.9.13 Q1 2012 Maintenance Release allows remote attackers to execute arbitrary code by uploading an executable file and then accessing it via a direct request.
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Analysis
by VulDB Data Team • 12/30/2024
The CVE-2012-3811 vulnerability represents a critical unrestricted file upload flaw in the Wallboard application component of Avaya IP Office Customer Call Reporter. This vulnerability exists within the ImageUpload.ashx handler which processes file uploads without adequate validation or sanitization of file types. The flaw affects specific versions of both the 7.0 and 8.0 product lines, specifically before their respective Q1 2012 maintenance releases, creating a window of exposure for remote attackers to exploit this weakness. The vulnerability is particularly dangerous because it allows attackers to upload executable files directly to the server, bypassing normal security restrictions that would typically prevent such file types from being stored or executed within web applications.
The technical implementation of this vulnerability stems from insufficient input validation within the file upload handler. When users upload files through the ImageUpload.ashx endpoint, the application fails to properly verify the file content type, file extension, or actual file format. This lack of proper validation enables attackers to upload malicious files with extensions that appear to be image files but are actually executable binaries. The vulnerability is classified as a CWE-434 Unrestricted Upload of File, which is a well-documented weakness in web applications where user-supplied files are accepted without proper security checks. This weakness allows for arbitrary code execution, as the uploaded files can be directly accessed and executed by the web server, bypassing typical web application security controls that would normally prevent such execution.
The operational impact of this vulnerability is severe and multifaceted. Remote attackers can leverage this flaw to upload malicious executables, web shells, or other malicious code to the target server, potentially leading to complete system compromise. Once an attacker successfully uploads an executable file, they can access it directly through a web request, allowing for remote code execution and persistent access to the compromised system. This vulnerability directly maps to attack techniques described in the MITRE ATT&CK framework under T1190 Exploit Public-Facing Application and T1059 Command and Scripting Interpreter, as it enables attackers to execute arbitrary commands on the target system. The compromise of the Wallboard application could provide attackers with access to sensitive customer call data, potentially exposing confidential information and violating data protection regulations. Additionally, the vulnerability could be used to establish backdoors, deploy additional malware, or create persistent access points for future attacks.
Mitigation strategies for CVE-2012-3811 should focus on both immediate remediation and long-term architectural improvements. The primary solution involves applying the vendor-supplied patches and maintenance releases that address this specific vulnerability, specifically upgrading to Avaya IP Office Customer Call Reporter 7.0.5.8 Q1 2012 Maintenance Release or 8.0.9.13 Q1 2012 Maintenance Release. Organizations should also implement proper file validation mechanisms that check both file extensions and actual file content, implement strict file type restrictions, and ensure uploaded files are stored outside the web root directory. Additional defensive measures include implementing web application firewalls to monitor and block suspicious upload attempts, conducting regular security assessments of web applications, and establishing proper access controls and monitoring for file upload activities. The vulnerability highlights the importance of following secure coding practices and implementing defense-in-depth strategies to prevent similar issues in other components of the system.