CVE-2012-1786 in Video Embed
Summary
by MITRE
The Media Upload form in the Video Embed & Thumbnail Generator plugin before 2.0 for WordPress allows remote attackers to obtain the installation path via unknown vectors.
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Analysis
by VulDB Data Team • 01/26/2018
The vulnerability identified as CVE-2012-1786 resides within the Video Embed & Thumbnail Generator plugin for WordPress, specifically affecting versions prior to 2.0. This issue represents a path disclosure vulnerability that occurs within the Media Upload form functionality of the plugin. The flaw allows remote attackers to potentially obtain sensitive information about the WordPress installation path through unspecified attack vectors. Such path disclosure vulnerabilities are particularly concerning as they can provide adversaries with critical system information that may aid in subsequent exploitation attempts. The vulnerability exists in the plugin's handling of media upload requests where insufficient input validation or output sanitization permits the exposure of filesystem paths that should remain confidential.
The technical nature of this vulnerability falls under the category of information disclosure, specifically path disclosure, which can be categorized as CWE-200 in the Common Weakness Enumeration system. The flaw manifests when the plugin processes media upload forms without properly sanitizing or restricting the information returned to users. Attackers can exploit this by crafting specific requests to the Media Upload form that trigger the disclosure of installation paths. This type of vulnerability typically occurs when error messages or system responses contain full or partial filesystem paths, which can reveal directory structures, file locations, and potentially even server configurations. The unspecified vectors mentioned in the CVE description suggest that the vulnerability could be triggered through various means within the upload form processing logic.
The operational impact of CVE-2012-1786 extends beyond simple information disclosure, as knowledge of the installation path provides attackers with significant reconnaissance data. This information can be leveraged to conduct more sophisticated attacks such as directory traversal exploits, local file inclusion vulnerabilities, or to craft targeted attacks against specific server configurations. The exposure of installation paths can reveal the underlying server architecture, which may include information about the operating system, web server configuration, and potentially even version information for the WordPress installation and its plugins. This reconnaissance data significantly reduces the attack surface and increases the likelihood of successful exploitation of other vulnerabilities present in the system. The vulnerability is particularly dangerous in environments where multiple plugins or themes may have related vulnerabilities, as the disclosed path information can guide attackers toward additional targets.
Mitigation strategies for this vulnerability require immediate action to upgrade the Video Embed & Thumbnail Generator plugin to version 2.0 or later, where the path disclosure issue has been addressed. System administrators should implement comprehensive plugin management practices, including regular updates and security monitoring of all installed plugins. The remediation process should also include implementing proper input validation and output sanitization measures to prevent similar vulnerabilities from occurring in other parts of the WordPress installation. Organizations should also consider implementing web application firewalls that can detect and block suspicious requests attempting to exploit path disclosure vulnerabilities. Additionally, regular security audits should be conducted to identify and remediate any other potential information disclosure vulnerabilities within the WordPress ecosystem, as these types of issues often indicate broader security weaknesses in the application architecture. The vulnerability demonstrates the importance of proper security practices in plugin development and the necessity for thorough code review processes to prevent such exposure of sensitive system information.