CVE-2024-32988 in OfferBox App
Summary
by MITRE • 05/22/2024
'OfferBox' App for Android versions 2.0.0 to 2.3.17 and 'OfferBox' App for iOS versions 2.1.7 to 2.6.14 use a hard-coded secret key for JWT. Secret key for JWT may be retrieved if the application binary is reverse-engineered.
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Analysis
by VulDB Data Team • 05/22/2024
The vulnerability identified as CVE-2024-32988 affects the OfferBox mobile applications across both android and ios platforms, specifically targeting versions within the ranges mentioned. This represents a critical security flaw that undermines the application's authentication and authorization mechanisms through the improper handling of cryptographic secrets. The issue stems from the implementation of JSON Web Token (JWT) authentication where developers have embedded a hard-coded secret key directly within the application binary, creating a fundamental weakness in the security architecture.
The technical flaw manifests through the use of a static secret key for JWT signature verification that remains unchanged across all application instances and deployments. When mobile applications contain hard-coded cryptographic secrets within their binaries, they become vulnerable to reverse engineering attacks that can expose these credentials to malicious actors. The nature of this vulnerability places it squarely within the scope of CWE-312, which specifically addresses the exposure of sensitive information through the improper handling of secret keys. This weakness allows attackers to extract the JWT secret key through binary analysis, decompilation, or other reverse engineering techniques that are readily available to security researchers and malicious actors alike.
The operational impact of this vulnerability is significant as it enables unauthorized parties to forge valid JWT tokens that would otherwise be authenticated by the application. Once an attacker obtains the hard-coded secret key, they can generate arbitrary JWT tokens with elevated privileges or access credentials that should remain protected. This compromises the integrity of the entire authentication system and potentially allows for unauthorized access to user accounts, sensitive data, and application functionalities. The vulnerability affects not just individual user sessions but could enable widespread unauthorized access across all application users who rely on JWT-based authentication mechanisms.
Mitigation strategies for this vulnerability must address both the immediate remediation and long-term architectural improvements to prevent similar issues in future implementations. The most critical immediate action involves removing the hard-coded secret key from the application binary and implementing proper key management practices including secure key storage mechanisms, dynamic key generation, and secure key distribution protocols. Organizations should implement proper secure coding practices that align with industry standards such as those outlined in the OWASP Mobile Top 10 and NIST guidelines for mobile application security. Additionally, the implementation of runtime application self-protection (RASP) mechanisms and code obfuscation techniques can provide additional layers of defense against reverse engineering attempts. Regular security assessments including mobile application penetration testing and static application security testing should be conducted to identify and remediate similar vulnerabilities in the application's attack surface. The remediation process should also include implementing proper key rotation mechanisms and ensuring that cryptographic secrets are never embedded within application binaries, instead utilizing secure key management services or hardware security modules to protect sensitive credentials.