CVE-2007-2082 in MyBlog
Summary
by MITRE
Direct static code injection vulnerability in admin/settings.php in MyBlog 0.9.8 and earlier allows remote authenticated admin users to inject arbitrary PHP code via the content parameter, which can be executed by accessing index.php. NOTE: a separate vulnerability could be leveraged to make this issue exploitable by remote unauthenticated attackers.
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Analysis
by VulDB Data Team • 08/29/2018
The vulnerability described in CVE-2007-2082 represents a critical direct static code injection flaw within the MyBlog content management system version 0.9.8 and earlier. This vulnerability exists within the administrative settings component at admin/settings.php where the application fails to properly sanitize user input before incorporating it into executable PHP code. The specific parameter affected is the content parameter which is processed without adequate validation or escaping mechanisms, creating a pathway for malicious code execution.
The technical nature of this vulnerability aligns with CWE-94, which describes the improper execution of code due to inadequate input validation and sanitization. The flaw operates as a code injection vulnerability where authenticated administrative users can manipulate the content parameter to inject arbitrary PHP code that gets executed when index.php is accessed. This represents a classic server-side code injection attack vector that bypasses normal input validation controls and directly incorporates user-supplied data into the application's execution flow.
From an operational perspective, this vulnerability creates a severe risk for systems running affected versions of MyBlog as it allows attackers with administrative credentials to execute arbitrary code on the server. The impact extends beyond simple data manipulation to full system compromise, potentially enabling attackers to escalate privileges, access sensitive data, install backdoors, or use the compromised system as a launch point for further attacks. The fact that the injected code executes through index.php means that even a single compromised administrative account can lead to complete system takeover.
The vulnerability's exploitation potential is significantly enhanced by the noted secondary vulnerability that could make it accessible to unauthenticated attackers, expanding the attack surface considerably. This dual vulnerability scenario creates a particularly dangerous threat model where initial access might be gained through a different vector, but then the code injection vulnerability allows for privilege escalation and persistent access. Organizations should consider this vulnerability in the context of ATT&CK technique T1059.007 for Windows command and scripting interpreter, as the PHP code injection effectively allows for command execution in the target environment.
Mitigation strategies should focus on immediate patching of the MyBlog application to version 0.9.9 or later where this vulnerability has been addressed. Additionally, implementing proper input validation and sanitization mechanisms for all user-supplied data is essential, particularly for parameters that are later incorporated into executable code contexts. Network segmentation and access control measures should be implemented to limit administrative access to only trusted users and systems. Regular security auditing of application code for similar injection vulnerabilities and maintaining up-to-date security patches across all systems are crucial defensive measures against this class of vulnerability.