CVE-2009-3041 in SPIP
Summary
by MITRE
SPIP 1.9 before 1.9.2i and 2.0.x through 2.0.8 does not use proper access control for (1) ecrire/exec/install.php and (2) ecrire/index.php, which allows remote attackers to conduct unauthorized activities related to installation and backups, as exploited in the wild in August 2009.
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Analysis
by VulDB Data Team • 08/26/2025
The vulnerability identified as CVE-2009-3041 affects the SPIP content management system version 1.9 before 1.9.2i and 2.0.x through 2.0.8, representing a critical access control flaw that undermines the security posture of web applications utilizing this platform. This vulnerability stems from insufficient authentication mechanisms within two critical system files: ecrire/exec/install.php and ecrire/index.php, which are integral components of SPIP's administrative interface. The flaw allows unauthenticated remote attackers to execute unauthorized operations related to system installation and backup functions, effectively bypassing the intended security controls that should restrict access to these administrative capabilities.
The technical nature of this vulnerability aligns with CWE-284, which describes improper access control mechanisms that permit unauthorized users to access resources or perform actions that should be restricted to authorized personnel. The flaw manifests in the absence of proper authentication checks within the installation and administrative interfaces, creating a path for malicious actors to manipulate the system without valid credentials. Attackers can exploit this weakness to perform unauthorized installation procedures, access backup files, and potentially gain deeper system control through the administrative functions that should remain protected from public access.
From an operational perspective, this vulnerability represents a significant risk to organizations deploying SPIP systems, particularly given its exploitation in the wild during August 2009. The impact extends beyond simple unauthorized access to include potential system compromise through installation of malicious code, data extraction through backup file access, and disruption of normal system operations. The vulnerability's exploitation demonstrates how insufficient access controls in web application interfaces can create pathways for attackers to escalate privileges and gain unauthorized system control, making it a critical concern for system administrators and security professionals responsible for protecting web-based content management systems.
The attack surface for this vulnerability encompasses any system running affected versions of SPIP where these administrative files remain accessible to remote users. The exploitation process typically involves direct access to the vulnerable endpoints without requiring prior authentication, making it particularly dangerous as it can be leveraged by attackers with minimal reconnaissance requirements. This vulnerability specifically relates to the ATT&CK technique T1078.004 which covers valid accounts and T1566.001 which involves valid accounts for initial access, though the weakness is more fundamentally rooted in the lack of proper access control validation rather than account compromise. Organizations should implement immediate mitigation strategies including updating to patched versions of SPIP, implementing proper access controls for administrative endpoints, and conducting comprehensive security assessments of their web applications to identify similar vulnerabilities in other system components.
The broader implications of this vulnerability highlight the importance of proper authentication and authorization mechanisms in web applications, particularly in content management systems where administrative access can provide extensive control over system resources and data. This flaw serves as a reminder of how seemingly minor access control oversights can create significant security risks, emphasizing the need for comprehensive security testing and regular vulnerability assessments of web applications. The vulnerability's classification as a persistent access control issue underscores the necessity of implementing defense-in-depth strategies that include proper input validation, authentication mechanisms, and access control enforcement at multiple layers of the application architecture to prevent similar exploitation patterns.