CVE-2020-9325 in TIFF Server
Summary
by MITRE
Aquaforest TIFF Server 4.0 allows Unauthenticated Arbitrary File Download.
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Analysis
by VulDB Data Team • 04/17/2024
The vulnerability identified as CVE-2020-9325 affects Aquaforest TIFF Server version 4.0 and represents a critical security flaw that permits unauthenticated arbitrary file download operations. This vulnerability exists within the server's file handling mechanisms and demonstrates a fundamental failure in access control enforcement. The flaw allows any remote attacker to download arbitrary files from the server's file system without requiring authentication credentials, potentially exposing sensitive data and system resources to unauthorized access.
The technical implementation of this vulnerability stems from insufficient input validation and access control mechanisms within the TIFF Server's file retrieval functions. The server fails to properly authenticate or authorize requests before processing file download operations, creating an attack surface where malicious actors can construct specially crafted requests to access files outside the intended directory structure. This typically occurs through parameter manipulation or path traversal techniques that bypass normal file access controls and allow retrieval of files that should remain protected.
From an operational impact perspective, this vulnerability presents severe risks to organizations using Aquaforest TIFF Server 4.0, particularly those handling sensitive or confidential data. Attackers can exploit this flaw to access configuration files, log files, source code repositories, database files, and other potentially sensitive information stored on the server. The vulnerability's unauthenticated nature means that no prior access credentials are required, making it particularly dangerous as it can be exploited by anyone with network access to the server. This capability can lead to data breaches, system compromise, and potential lateral movement within network environments where the server resides.
The vulnerability aligns with CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal attacks. This weakness allows attackers to access files and directories stored outside the intended directory by manipulating input data to traverse the file system. The ATT&CK framework categorizes this as a technique for "Path Traversal" under the T1083 reconnaissance phase, where adversaries seek to understand the file system structure and identify sensitive data locations. Organizations may also observe this vulnerability as part of broader reconnaissance activities targeting file system access controls.
Effective mitigation strategies include immediate patching of the Aquaforest TIFF Server to the latest version that addresses this vulnerability, implementing network segmentation to limit access to the server, and deploying web application firewalls that can detect and block path traversal attempts. Additionally, organizations should conduct comprehensive file access audits to identify and restrict access to sensitive files, implement proper input validation for all file operations, and establish monitoring procedures to detect unusual file access patterns that may indicate exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other server applications and network infrastructure components.