CVE-2000-0288 in Infonautics
Summary
by MITRE
Infonautics getdoc.cgi allows remote attackers to bypass the payment phase for accessing documents via a modified form variable.
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Analysis
by VulDB Data Team • 04/21/2026
The vulnerability identified as CVE-2000-0288 represents a critical access control flaw within the Infonautics getdoc.cgi web application component. This issue resides in the payment validation mechanism that governs document access, creating a pathway for malicious actors to circumvent the intended financial transaction process. The flaw specifically manifests when the application fails to properly validate form variables, allowing attackers to manipulate the payment phase through direct parameter modification. Such a vulnerability directly violates the principle of least privilege and authentication integrity, as it enables unauthorized users to gain access to premium content without fulfilling the required payment obligations.
The technical exploitation of this vulnerability occurs through manipulation of form variables within the getdoc.cgi script, which serves as the gateway for document retrieval. Attackers can modify the payment status indicators or related form parameters to indicate successful payment completion, even when no actual transaction has occurred. This manipulation exploits a fundamental flaw in input validation and state management within the web application's business logic. The vulnerability falls under CWE-284, which addresses improper access control, and more specifically aligns with CWE-352, covering cross-site request forgery, as the attack vector involves unauthorized modification of application state through crafted requests. The weakness demonstrates poor implementation of security controls that should verify payment status before granting document access.
The operational impact of CVE-2000-0288 extends beyond simple unauthorized content access, representing a significant financial risk to the organization operating the Infonautics system. Revenue loss occurs directly through unauthorized document access without payment, while the vulnerability also creates potential for broader system compromise through subsequent exploitation attempts. Attackers may leverage this initial access to gather information about other potentially vulnerable components or use the compromised system as a foothold for further attacks within the network infrastructure. The vulnerability's remote nature eliminates the need for physical access or insider knowledge, making it particularly dangerous from a threat actor perspective. This flaw can be categorized under ATT&CK technique T1078 for valid accounts and T1566 for credential stuffing, as the exploitation essentially creates unauthorized access to legitimate system resources.
Mitigation strategies for CVE-2000-0288 must address both the immediate vulnerability and underlying architectural weaknesses in the payment validation system. The most effective approach involves implementing robust server-side validation of payment status, ensuring that all transaction parameters are verified against a secure backend payment processing system rather than relying solely on client-side form data. Organizations should implement proper session management and state validation controls that prevent modification of critical payment variables. Input sanitization and parameter validation should be strengthened to reject any malformed or suspicious form data. Additionally, the implementation of cryptographic signatures for payment transactions and server-side transaction logging can help detect and prevent unauthorized modifications. The system should enforce proper authentication and authorization checks at multiple points in the document access workflow, ensuring that payment verification occurs before any content delivery takes place. Regular security testing including penetration testing and code review processes should be implemented to identify similar vulnerabilities in other application components and maintain ongoing security posture.