CVE-2009-2991 in Acrobat Reader
Summary
by MITRE
Unspecified vulnerability in the Mozilla plug-in in Adobe Reader and Acrobat 8.x before 8.1.7, and possibly 7.x before 7.1.4 and 9.x before 9.2, might allow remote attackers to execute arbitrary code via unknown vectors.
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Analysis
by VulDB Data Team • 10/16/2018
The vulnerability identified as CVE-2009-2991 represents a critical security flaw within Adobe Reader and Acrobat software products that affected multiple version ranges including 8.x before 8.1.7, 7.x before 7.1.4, and 9.x before 9.2. This unspecified vulnerability resides within the Mozilla plug-in component of these applications, which serves as a crucial interface for handling various web-based content and multimedia elements. The affected software versions demonstrate a significant security gap that could potentially be exploited by remote attackers to gain unauthorized code execution capabilities.
The technical nature of this vulnerability stems from the Mozilla plug-in implementation within Adobe's document processing software, which is designed to handle various web content formats including javascript and other interactive elements. This plugin architecture creates a complex attack surface where memory corruption issues or improper input validation could occur during the processing of malformed or malicious content. The unspecified nature of the vulnerability suggests that the root cause involves multiple potential attack vectors or that the exact technical mechanism has not been fully disclosed in the initial vulnerability report. Such vulnerabilities typically fall under the category of buffer overflows, memory corruption issues, or improper validation of user-supplied data that can be manipulated to overwrite critical memory locations.
From an operational perspective, this vulnerability poses severe risks to organizations that rely on Adobe Reader and Acrobat for document processing and viewing. The remote code execution capability means that attackers could potentially compromise systems simply by tricking users into opening maliciously crafted PDF documents that contain embedded malicious content. This attack vector is particularly dangerous in enterprise environments where users frequently open documents from external sources, email attachments, or web downloads. The vulnerability could be exploited through social engineering campaigns targeting specific organizations or through automated scanning of web applications that serve PDF content. Once successfully exploited, attackers could gain complete control over affected systems, potentially leading to data breaches, privilege escalation, and further network infiltration.
The impact of this vulnerability extends beyond individual system compromise to affect entire organizational security postures. Organizations using affected versions of Adobe Reader and Acrobat face significant exposure to targeted attacks that could result in unauthorized access to sensitive documents, intellectual property theft, and potential compliance violations. The vulnerability's presence in multiple version ranges including major releases like 8.x, 7.x, and 9.x means that organizations needed to urgently assess their entire software inventory and implement immediate patching strategies. Security professionals should note that this vulnerability aligns with attack patterns commonly associated with CVE-1192 and other memory corruption issues that have been documented in the ATT&CK framework under techniques related to exploitation of software vulnerabilities and privilege escalation. The remediation strategy requires immediate deployment of patches from Adobe and implementation of network security controls to prevent users from opening potentially malicious documents, particularly those containing embedded javascript or other interactive elements.
Organizations should also consider implementing additional security controls such as sandboxing mechanisms, content filtering solutions, and user education programs to reduce the attack surface. The vulnerability demonstrates the critical importance of maintaining up-to-date software patches and following security best practices for document handling and web content processing. Security teams should monitor for any additional information or exploit codes that may emerge for this vulnerability and ensure that their incident response procedures include specific protocols for handling Adobe Reader and Acrobat-related security incidents. Regular vulnerability assessments and penetration testing should be conducted to identify similar issues within other software components that may present similar attack vectors.