CVE-2016-3684 in Download Manager
Summary
by MITRE
SAP Download Manager 2.1.142 and earlier uses a hardcoded encryption key to protect stored data, which allows context-dependent attackers to obtain sensitive configuration information by leveraging knowledge of this key, aka SAP Security Note 2282338.
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Analysis
by VulDB Data Team • 07/07/2019
SAP Download Manager version 2.1.142 and earlier contains a critical cryptographic vulnerability that stems from the use of a hardcoded encryption key for protecting stored data. This flaw represents a fundamental weakness in the application's security architecture where the encryption mechanism relies on a static key that is embedded within the software code or configuration files. The vulnerability allows attackers with context-dependent access to potentially obtain sensitive configuration information by leveraging knowledge of this hardcoded key, creating a significant risk for systems that rely on this download manager for secure data handling operations.
The technical implementation of this vulnerability falls under the category of weak cryptographic practices and hard-coded secrets, which are commonly classified as CWE-320: Use of Hard-coded Cryptographic Key and CWE-312: Cleartext Storage of Sensitive Information. The flaw occurs because the application does not implement proper key management practices, instead relying on a predetermined encryption key that remains constant across all installations. This approach violates fundamental security principles for cryptographic key management and creates a single point of failure that can be exploited by attackers who discover or reverse-engineer the hardcoded key. The vulnerability is particularly concerning because it affects the protection of stored data, meaning that any sensitive configuration information that is encrypted using this mechanism becomes accessible to unauthorized parties who can exploit the known key.
From an operational impact perspective, this vulnerability can lead to significant security breaches when attackers gain access to the hardcoded key through various means such as reverse engineering, code analysis, or social engineering tactics. The exposure of sensitive configuration information can include credentials, connection parameters, encryption keys for other systems, and potentially business-critical data that was intended to be protected. The context-dependent nature of this attack means that the vulnerability requires some level of access to the system or knowledge about the application's implementation, but once exploited, it can provide attackers with comprehensive access to the stored data that was meant to be protected. This makes the vulnerability particularly dangerous in environments where the SAP Download Manager is used to handle sensitive enterprise data or where the application has elevated privileges on the system.
The mitigation strategies for this vulnerability require immediate action from organizations using affected versions of SAP Download Manager. The primary remediation involves upgrading to a patched version of the software that implements proper cryptographic key management practices and eliminates the use of hardcoded encryption keys. Organizations should also conduct comprehensive security assessments to identify any data that may have been exposed through this vulnerability and implement additional layers of protection for sensitive information. Security teams should consider implementing key rotation mechanisms and proper key management protocols to prevent similar issues in other applications within their environment. The vulnerability aligns with several ATT&CK tactics including credential access and defense evasion, as attackers can leverage this weakness to access stored credentials and potentially bypass other security controls that depend on the integrity of the stored data. Organizations should also review their software supply chain security practices and implement continuous monitoring to detect similar hardcoded secrets in other applications that may be deployed within their infrastructure.