CVE-2008-4814 in Acrobat
Summary
by MITRE
Unspecified vulnerability in a JavaScript method in Adobe Reader and Acrobat 8.1.2 and earlier, and before 7.1.1, allows remote attackers to execute arbitrary code via unknown vectors, related to an "input validation issue."
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 10/16/2018
This vulnerability resides within Adobe Reader and Acrobat software versions prior to 7.1.1 and 8.1.2 respectively, representing a critical input validation flaw in JavaScript execution methods. The unspecified nature of the vulnerability vectors indicates that attackers could exploit multiple pathways to achieve arbitrary code execution, making the threat surface particularly broad and difficult to defend against through traditional perimeter security measures.
The core technical flaw manifests as an insufficient validation mechanism within the JavaScript engine of Adobe's document processing applications. When parsing maliciously crafted PDF documents containing specially constructed JavaScript code, the application fails to properly validate input parameters, allowing attackers to bypass normal execution boundaries and inject malicious payloads directly into the memory space of the running process. This vulnerability operates at the application layer where PDF rendering and JavaScript interpretation intersect, creating a direct pathway for privilege escalation and system compromise.
From an operational perspective, this vulnerability presents significant risk to enterprise environments where Adobe Reader remains widely deployed for document viewing and processing. Attackers can leverage this flaw through social engineering campaigns targeting end users with malicious PDF attachments, or through compromised web portals where PDF documents are rendered automatically. The remote execution capability means that successful exploitation does not require local access, enabling attackers to compromise systems from external networks. The vulnerability's classification aligns with CWE-129, which describes improper validation of input boundaries, and demonstrates characteristics consistent with ATT&CK technique T1059.007 for JavaScript execution.
The impact extends beyond simple code execution to encompass potential privilege escalation and lateral movement within compromised networks. Successful exploitation could allow attackers to install backdoors, exfiltrate sensitive data, or establish persistent access to target systems. Organizations running affected versions of Adobe Reader and Acrobat face heightened risk of advanced persistent threats and zero-day exploitation attempts. The vulnerability's presence in both major release lines indicates a fundamental flaw in the application's security architecture rather than a temporary coding error.
Mitigation strategies should prioritize immediate patch deployment for all affected versions, with particular attention to legacy systems that may not receive automatic updates. Network segmentation and PDF content filtering can provide temporary protection while patches are deployed, though these measures do not address the underlying vulnerability. Security teams should implement monitoring for suspicious PDF-related network traffic and user activities, as well as conduct thorough vulnerability assessments to identify systems running unsupported versions. The remediation process should include comprehensive testing to ensure that patch deployment does not disrupt legitimate business functions while maintaining the security posture against this specific threat vector.