CVE-2008-7111 in Scanner File Utility
Summary
by MITRE
The Scanner File Utility (aka listener) in Kyocera Mita (KM) 3.3.0.1 does not restrict the filenames or extensions of uploaded files, which makes it easier for remote attackers to execute arbitrary code or overwrite files by leveraging CVE-2008-7110 and CVE-2008-7109.
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Analysis
by VulDB Data Team • 12/20/2017
The vulnerability described in CVE-2008-7111 represents a critical security flaw within the Scanner File Utility component of Kyocera Mita software version 3.3.0.1. This utility, also known as the listener, serves as a key interface for file handling operations within the printer management system. The vulnerability stems from inadequate input validation mechanisms that fail to properly restrict or sanitize filenames and file extensions during the upload process. This weakness creates a pathway for malicious actors to exploit the system through a chain of related vulnerabilities including CVE-2008-7110 and CVE-2008-7109, which together form a comprehensive attack vector targeting the printer's file handling capabilities.
The technical flaw manifests in the absence of proper filename validation and extension filtering within the Scanner File Utility. When users upload files through this interface, the system fails to implement restrictive measures that would normally prevent the upload of potentially dangerous file types or filenames containing malicious sequences. This lack of sanitization allows attackers to submit files with extensions or naming conventions that could be interpreted as executable or system-critical, enabling them to bypass normal security boundaries. The vulnerability operates at the application layer and can be exploited through network-based attacks, requiring no local access or authentication credentials from the attacker.
The operational impact of this vulnerability extends beyond simple code execution capabilities to include potential file overwriting scenarios that could compromise system integrity and availability. Attackers could leverage this weakness to overwrite critical system files, inject malicious code into the printer's operational environment, or even escalate privileges within the affected system. The combination of CVE-2008-7110 and CVE-2008-7109 creates a multi-stage attack capability where the initial file upload vulnerability serves as a foothold for more sophisticated exploitation techniques. This vulnerability affects organizations using Kyocera Mita software in their document management and printing workflows, potentially exposing sensitive data and disrupting business operations.
Security professionals should recognize this vulnerability as aligning with common weakness enumerations such as CWE-20, which describes improper input validation, and CWE-73, which addresses external control of filename or path. The attack patterns associated with this vulnerability correspond to techniques found in the MITRE ATT&CK framework under the T1059 category for command and scripting interpreter, as well as T1074 for data staging and T1566 for credential access through social engineering. Organizations should implement immediate mitigations including input validation restrictions, file extension whitelisting, and comprehensive network monitoring to detect unauthorized file upload attempts. The vulnerability underscores the critical importance of secure file handling practices and proper input sanitization in enterprise printer management systems, particularly those handling sensitive documents and data within corporate environments.