CVE-2012-0693 in WHMCompleteSolution
Summary
by MITRE
** DISPUTED ** submitticket.php in WHMCompleteSolution (WHMCS) 5.03 allows remote attackers to inject arbitrary code into a subject field via crafted ticket data, a different vulnerability than CVE-2011-5061. NOTE: the vendor disputes this issue, noting that some of the details overlap CVE-2011-5061, but that it "says it affects V5.0.3, and the submitticket.php file, both of which are wrong."
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Analysis
by VulDB Data Team • 08/06/2024
The vulnerability identified as CVE-2012-0693 relates to a potential code injection flaw in WHMCompleteSolution version 5.03, specifically within the submitticket.php component. This issue falls under the category of insecure input handling and represents a significant security risk for hosting and web management platforms. The vulnerability allows remote attackers to manipulate the subject field of ticket submissions, potentially enabling arbitrary code execution within the system's context. This type of vulnerability directly impacts the integrity and confidentiality of user data while potentially providing attackers with unauthorized access to system resources.
The technical flaw manifests through improper validation and sanitization of user input within the ticket submission process. When users submit tickets through the web interface, the subject field undergoes insufficient filtering, allowing maliciously crafted data to bypass security controls. This weakness creates an attack vector where an unauthenticated remote adversary can inject malicious payloads that may be executed within the application's processing environment. The vulnerability's classification aligns with CWE-94, which covers "Improper Control of Generation of Code ('Code Injection')" and represents a variant of the broader category of injection flaws that have been extensively documented in the security community.
From an operational perspective, this vulnerability could enable attackers to execute arbitrary code on the target system, potentially leading to complete system compromise. The impact extends beyond simple data theft, as successful exploitation could allow attackers to install backdoors, modify system configurations, or escalate privileges within the WHMCS environment. The vendor's disputed status regarding this specific issue suggests potential confusion in version identification or file references, which complicates the assessment of the actual attack surface. However, the underlying principle of code injection vulnerabilities remains consistent with established threat models and represents a critical concern for any web application processing user input.
Security professionals should implement multiple layers of defense when addressing this vulnerability. Input validation and sanitization measures must be strengthened at the application level, with proper escaping of special characters and implementation of whitelist-based validation for all user-supplied data. The principle of least privilege should be enforced, ensuring that the application processes operate with minimal necessary permissions. Network-level protections such as web application firewalls and intrusion detection systems can provide additional monitoring capabilities to detect and block suspicious traffic patterns. This vulnerability demonstrates the importance of comprehensive security testing including dynamic analysis and code review practices to identify potential injection points within web applications. The incident also highlights the necessity of maintaining accurate vulnerability databases and clear communication between vendors and security researchers to properly categorize and address security issues in software products.