CVE-2025-9210 in Ship Property Management System
Summary
by MITRE • 08/18/2026
Missing signature validation in JSON Web Tokens in Otalio Ship Property Management System versions before 2.22.0 allows authenticated attackers to escalate privileges via tampering with JWTs
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Analysis
by VulDB Data Team • 08/18/2026
The vulnerability identified in the Otalio Ship Property Management System prior to version 2.22.0 represents a critical failure in the implementation of JSON Web Token (JWT) security mechanisms, specifically concerning signature validation. In standard OAuth 2.0 and OpenID Connect flows, JWTs are used as bearer tokens to assert identity and authorize access to protected resources. The core principle of JWT integrity relies on cryptographic signing using algorithms such as HMAC SHA-256 or RSA with a private key known only to the issuer. When an application fails to validate this signature upon receiving a token from a client, it effectively treats any presented token as valid regardless of its origin or content modification history. This flaw allows authenticated attackers who possess a low-privilege JWT to manipulate the payload fields directly and present the altered token back to the server without detection.
From a technical perspective, the absence of signature verification means that the application does not perform the necessary cryptographic check to ensure the token has not been tampered with since issuance. An attacker can intercept their own session token using standard web debugging tools or proxy software such as Burp Suite. By decoding the base64url-encoded payload, which is typically readable without any secret key, the attacker modifies critical claims such as user roles, permissions, or account identifiers to escalate privileges from a regular user to an administrator role. The modified payload is then re-encoded and sent in subsequent requests. Because the server does not verify that this new token was signed by its private key, it accepts the tampered token as legitimate, granting the attacker elevated access rights based on the falsified claims within the JWT structure.
The operational impact of this vulnerability is severe due to the potential for complete system compromise and unauthorized administrative actions. Since Otalio Ship Property Management System handles sensitive maritime data including vessel details, crew information, financial records, and compliance documentation, privilege escalation allows an attacker to access confidential business intelligence that could be leaked or sold on dark web markets. Furthermore, with administrative privileges gained through JWT tampering, the attacker can modify system configurations, delete critical logs to cover their tracks, inject malicious code into managed vessels' operational parameters, or create backdoor accounts for persistent access. This undermines the integrity and confidentiality of the entire platform, potentially leading to significant financial losses and reputational damage for shipping companies relying on the software for daily operations.
This vulnerability aligns with CWE-347 Improper Verification of Cryptographic Signature, which describes scenarios where an application fails to verify that a message has not been altered or does not originate from a trusted source. In terms of offensive security frameworks, this exploitation technique maps directly to MITRE ATT&CK Tactic TA0001 Initial Access and specifically the sub-technique T1528 Steal Application Access Token. The attacker leverages stolen credentials to obtain an initial token but then modifies that token to expand their access scope without needing additional credential theft or brute-force attacks. This method is particularly dangerous because it bypasses traditional authentication checks, relying instead on a logic flaw in the authorization layer where trust is incorrectly assumed based solely on the presence of a validly formatted JWT rather than its cryptographic authenticity.
To mitigate this vulnerability and prevent similar issues in future releases, developers must enforce strict signature validation for all incoming JSON Web Tokens. The application should explicitly specify which signing algorithms are acceptable, such as restricting acceptance to RS256 or HS256 depending on the key management strategy, while rejecting algorithm confusion attacks that might attempt to switch from asymmetric to symmetric verification if not properly configured. It is essential to use established cryptographic libraries rather than custom implementations to handle token parsing and validation. Additionally, implementing short expiration times for access tokens reduces the window of opportunity for exploitation even if a token is intercepted or tampered with. Regular security audits focusing on authentication flows and penetration testing that specifically targets JWT manipulation should be conducted to ensure robust defense against privilege escalation attempts in web-based management systems.