CVE-2008-2012 in PostSchedule
Summary
by MITRE
SQL injection vulnerability in index.php in the PostSchedule 1.0 module for PostNuke allows remote attackers to execute arbitrary SQL commands via the eid parameter in an event action.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 10/21/2024
The vulnerability identified as CVE-2008-2012 represents a critical SQL injection flaw within the PostSchedule 1.0 module for PostNuke content management system. This vulnerability specifically affects the index.php file and manifests through the eid parameter when processing event actions. The flaw stems from inadequate input validation and sanitization mechanisms that fail to properly filter user-supplied data before incorporating it into database queries. Attackers can exploit this weakness by crafting malicious SQL commands through the eid parameter, potentially gaining unauthorized access to sensitive database information.
This vulnerability directly maps to CWE-89 which defines SQL injection as the insertion of malicious SQL code into input fields for execution by the database. The attack vector operates through the event action processing mechanism where the eid parameter is directly concatenated into SQL queries without proper parameterization or input sanitization. The PostSchedule module's failure to implement proper input validation creates an environment where remote attackers can manipulate database operations to retrieve, modify, or delete information from the underlying database system. The vulnerability affects the authentication and authorization mechanisms of the PostNuke platform, potentially allowing attackers to escalate privileges or extract confidential data.
The operational impact of this vulnerability extends beyond simple data theft to encompass full database compromise and potential system takeover. Remote attackers can execute arbitrary SQL commands through the vulnerable parameter, enabling them to bypass authentication mechanisms, extract sensitive user credentials, modify database content, or even gain shell access to the underlying server. The vulnerability affects the integrity, confidentiality, and availability of the PostNuke system, as it allows unauthorized access to the database layer. This type of attack can lead to complete system compromise, data exfiltration, and service disruption. The attack surface is particularly concerning given that the vulnerability exists in a core module that handles event scheduling functionality, which is commonly used in web applications.
Mitigation strategies for this vulnerability require immediate implementation of input validation and parameterized queries. Organizations should implement proper input sanitization techniques to filter out malicious characters and sequences that could be used in SQL injection attacks. The recommended approach involves using prepared statements or parameterized queries to separate SQL code from user input, thereby preventing the execution of unintended SQL commands. Additionally, implementing proper access controls and least privilege principles can limit the potential damage from successful exploitation. The remediation process should include updating to patched versions of the PostSchedule module, implementing web application firewalls, and conducting thorough security testing. This vulnerability aligns with ATT&CK technique T1190 which describes the use of SQL injection to gain access to databases and extract sensitive information, making it a critical target for immediate remediation efforts.