CVE-2007-2935 in Fundanemt
Summary
by MITRE
core/spellcheck/spellcheck.php in Fundanemt before 2.2.0.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the dict parameter.
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Analysis
by VulDB Data Team • 09/19/2024
The vulnerability identified as CVE-2007-2935 affects the Fundanemt content management system version 2.2.0.1 and earlier, specifically targeting the spellcheck functionality within the core/spellcheck/spellcheck.php file. This represents a critical command injection flaw that enables remote attackers to execute arbitrary system commands through manipulated input parameters. The vulnerability stems from insufficient input validation and sanitization within the spellcheck module, creating an avenue for malicious actors to bypass security controls and gain unauthorized access to the underlying system.
The technical flaw manifests through the improper handling of the dict parameter in the spellcheck.php script, where user-supplied input containing shell metacharacters is directly processed without adequate sanitization or escaping mechanisms. This allows attackers to inject operating system commands that get executed with the privileges of the web application process, potentially leading to complete system compromise. The vulnerability aligns with CWE-77 which describes improper neutralization of special elements used in a command, and represents a classic command injection attack vector that has been documented across numerous web applications over many years. The attack surface is particularly concerning as it requires no authentication to exploit, making it accessible to any remote attacker with knowledge of the vulnerable application path.
The operational impact of this vulnerability extends far beyond simple data compromise, as successful exploitation can result in complete system takeover, data exfiltration, and potential lateral movement within network environments. Attackers can leverage this vulnerability to install backdoors, modify system files, access sensitive data, and establish persistent access to compromised systems. The lack of authentication requirements makes this vulnerability particularly dangerous in publicly accessible web environments where the application might be exposed to the internet. Organizations running affected versions of Fundanemt face significant risk of unauthorized access and potential breach of their entire web infrastructure, especially if the web application has elevated privileges on the hosting system.
Mitigation strategies for CVE-2007-2935 should prioritize immediate patching to version 2.2.0.1 or later, which contains the necessary input validation fixes. Organizations should implement comprehensive input sanitization measures, including proper escaping of shell metacharacters and validation of all user-supplied parameters before processing. Network segmentation and web application firewalls can provide additional layers of protection, while regular security audits should verify that no other components within the application exhibit similar vulnerabilities. The remediation process should also include monitoring for signs of exploitation attempts and implementing proper logging of spellcheck module usage to detect anomalous behavior. This vulnerability demonstrates the critical importance of input validation in web applications and aligns with ATT&CK technique T1059.001 for command and scripting interpreter, highlighting the need for robust application security controls to prevent unauthorized command execution.