CVE-2006-6575 in yaplap
Summary
by MITRE
PHP remote file inclusion vulnerability in ldap.php in Brian Drawert Yet Another PHP LDAP Admin Project (yaplap) 0.6 and 0.6.1 allows remote attackers to execute arbitrary PHP code via a URL in the LOGIN_style parameter.
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Analysis
by VulDB Data Team • 08/11/2024
The vulnerability identified as CVE-2006-6575 represents a critical remote file inclusion flaw within the Yet Another PHP LDAP Admin Project version 0.6 and 0.6.1. This vulnerability specifically affects the ldap.php script and stems from improper input validation mechanisms that fail to sanitize user-supplied data. The flaw occurs when the application accepts a LOGIN_style parameter that contains a URL, which is then directly incorporated into a PHP include or require statement without adequate sanitization or validation.
The technical nature of this vulnerability aligns with CWE-88, which describes improper neutralization of special elements used in an expression, and more specifically with CWE-94, which addresses the execution of arbitrary code due to improper input validation. The vulnerability operates by allowing an attacker to manipulate the LOGIN_style parameter to point to a remote malicious PHP script, thereby enabling remote code execution on the target server. This type of vulnerability is particularly dangerous as it can be exploited without authentication, making it accessible to any remote attacker who can submit requests to the affected application.
The operational impact of this vulnerability is severe and multifaceted. An attacker who successfully exploits this flaw can execute arbitrary PHP code on the target system, potentially leading to complete system compromise. The vulnerability enables attackers to upload and execute malicious payloads, establish backdoors, or perform further reconnaissance and lateral movement within the network. Given that this affects an LDAP administration tool, the potential for privilege escalation and access to sensitive directory services information is significant, as attackers could gain access to user credentials and directory structures that are typically protected.
From a threat modeling perspective, this vulnerability maps directly to several ATT&CK techniques including T1190 for exploitation of remote services and T1059 for command and scripting interpreter. The attack surface is expanded by the fact that this vulnerability can be exploited through web-based interfaces, making it particularly dangerous for publicly accessible applications. Organizations running affected versions of yaplap are at risk of unauthorized code execution, data exfiltration, and potential system takeover. The vulnerability demonstrates the critical importance of input validation and the principle of least privilege in web application security.
Mitigation strategies should include immediate patching of the affected application to version 0.6.2 or later, which contains the necessary fixes for this vulnerability. Additionally, administrators should implement proper input validation and sanitization mechanisms to prevent untrusted data from being used in include statements. The application should be configured to use absolute paths for included files and implement proper access controls to limit exposure. Network segmentation and firewall rules should be applied to restrict access to the affected application, while monitoring systems should be deployed to detect suspicious requests containing URL parameters. Security headers and content security policies should also be implemented to add additional layers of protection against similar vulnerabilities in the future.