CVE-2007-5463 in Shop
Summary
by MITRE
ideal_process.php in the iDEAL payment module in ViArt Shop 3.3 beta and earlier might allow remote attackers to obtain the pathname for certificate and key files via an "iDEAL transaction", possibly involving fopen error messages for nonexistent files, a different issue than CVE-2007-5364. NOTE: this can be leveraged for reading certificate or key files if an installation places these files under the web document root.
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Analysis
by VulDB Data Team • 09/10/2018
The vulnerability identified as CVE-2007-5463 affects the iDEAL payment module within ViArt Shop version 3.3 beta and earlier, representing a path disclosure issue that can potentially expose sensitive certificate and key file locations. This vulnerability specifically resides in the ideal_process.php script which handles iDEAL transaction processing, making it a critical concern for e-commerce platforms handling financial transactions. The flaw manifests when the payment module encounters issues with certificate file access, particularly when attempting to open files that do not exist within the system's file structure. This behavior creates an opportunity for attackers to extract directory paths through error messages generated by the fopen function when it attempts to access non-existent certificate or key files, which can reveal critical information about the system's file structure and potentially expose sensitive file locations within the web document root.
The technical exploitation of this vulnerability involves leveraging the error handling mechanism within the iDEAL payment module to trigger fopen error messages that inadvertently disclose the absolute path to certificate and key files. When the system attempts to access certificate files that are either missing or inaccessible, the underlying PHP error reporting mechanism outputs information that includes the full file path to the non-existent files. This path disclosure occurs because the error messages are not properly sanitized before being displayed to the user or logged in a way that could be accessed by unauthorized parties. The vulnerability is particularly dangerous because it can be triggered through normal iDEAL transaction processing, meaning that legitimate users could inadvertently expose system paths while attempting to complete payment transactions, and attackers can replicate this behavior to gather information about the system's file structure.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can enable attackers to escalate their privileges and potentially access sensitive cryptographic materials. When certificate and key files are stored within the web document root directory, the path disclosure can directly lead to file access and reading capabilities, allowing attackers to obtain private keys, SSL certificates, or other sensitive cryptographic materials used for secure communications. This represents a significant risk for e-commerce platforms where the security of payment processing is paramount, as compromised certificates and keys can lead to man-in-the-middle attacks, unauthorized transaction processing, and overall system compromise. The vulnerability can be leveraged as part of a broader attack chain where path information is used to identify other potential weaknesses in the system architecture, potentially leading to further exploitation opportunities. According to CWE standards, this vulnerability maps to CWE-200, which covers "Information Exposure," while the ATT&CK framework would classify this under T1212, "Exploitation for Credential Access," as the disclosure of cryptographic material can be used to gain unauthorized access to secure systems.
The mitigation strategies for CVE-2007-5463 require immediate attention and multiple layers of defensive measures to protect against path disclosure and potential file access. Organizations should first update to a patched version of ViArt Shop that addresses this specific vulnerability, as the original developers have likely implemented proper error handling to prevent path exposure. System administrators should also implement proper error handling mechanisms that do not expose internal file paths or system information to end users, ensuring that error messages are generic and do not contain sensitive path information. The configuration of the payment module should be reviewed to ensure that certificate and key files are stored outside of the web document root, implementing proper file permissions and access controls to prevent unauthorized access. Additionally, comprehensive logging and monitoring should be implemented to detect unusual access patterns or attempts to trigger error conditions that could expose system paths, as this vulnerability can be exploited through normal transaction processing and may not be immediately apparent to system administrators.