CVE-2005-2319 in Yawp
Summary
by MITRE
PHP remote file include vulnerability in Yawp library 1.0.6 and earlier, as used in YaWiki and possibly other products, allows remote attackers to include arbitrary files via the _Yawp[conf_path] parameter.
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Analysis
by VulDB Data Team • 07/10/2018
The vulnerability identified as CVE-2005-2319 represents a critical remote file inclusion flaw within the Yawp library version 1.0.6 and earlier implementations. This vulnerability specifically affects YaWiki and potentially other applications that integrate the affected library, creating a significant security risk for systems that rely on this component. The flaw manifests through the _Yawp[conf_path] parameter which is improperly validated, allowing malicious actors to manipulate the file inclusion mechanism and execute arbitrary code on the target system. The vulnerability falls under the category of insecure direct object references and improper input validation, both of which are commonly exploited in web application attacks.
The technical exploitation of this vulnerability occurs when an attacker can manipulate the _Yawp[conf_path] parameter to point to malicious files stored on remote servers or local filesystems. This allows for arbitrary code execution, privilege escalation, and potential full system compromise. The flaw is classified as a remote code execution vulnerability that enables attackers to include and execute malicious PHP scripts, effectively bypassing normal access controls and security measures. The vulnerability demonstrates poor input sanitization practices where user-supplied data is directly used in file inclusion operations without proper validation or sanitization, creating an attack surface that can be exploited through various means including web-based interfaces.
From an operational impact perspective, this vulnerability can lead to complete system compromise, data theft, service disruption, and unauthorized access to sensitive information. Attackers can leverage this flaw to gain persistent access to affected systems, establish backdoors, and conduct further reconnaissance activities. The vulnerability affects not only the immediate application but can also compromise the entire server environment, especially when the application runs with elevated privileges. According to the ATT&CK framework, this vulnerability maps to the T1059.007 technique for command and script injection, while CWE-98 categorizes it as inclusion of file or directory with untrusted source, highlighting the dangerous nature of unvalidated file inclusion operations.
Mitigation strategies for this vulnerability include immediate patching of the Yawp library to version 1.0.7 or later, which addresses the file inclusion flaw through proper input validation and sanitization. Organizations should implement proper parameter validation, input sanitization, and secure coding practices to prevent similar vulnerabilities from occurring in the future. The implementation of web application firewalls and proper access controls can provide additional layers of protection. Security teams should conduct comprehensive vulnerability assessments to identify other potential instances of similar flaws within their application portfolios and ensure that all third-party libraries are kept up to date with the latest security patches. Regular security testing and code reviews should be implemented to prevent the introduction of insecure file inclusion mechanisms in future development cycles, aligning with industry best practices outlined in the OWASP Top Ten and similar security frameworks.