CVE-2016-4269 in Acrobat Reader
Summary
by MITRE
Adobe Reader and Acrobat before 11.0.17, Acrobat and Acrobat Reader DC Classic before 15.006.30198, and Acrobat and Acrobat Reader DC Continuous before 15.017.20050 on Windows and OS X allow attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2016-4191, CVE-2016-4192, CVE-2016-4193, CVE-2016-4194, CVE-2016-4195, CVE-2016-4196, CVE-2016-4197, CVE-2016-4198, CVE-2016-4199, CVE-2016-4200, CVE-2016-4201, CVE-2016-4202, CVE-2016-4203, CVE-2016-4204, CVE-2016-4205, CVE-2016-4206, CVE-2016-4207, CVE-2016-4208, CVE-2016-4211, CVE-2016-4212, CVE-2016-4213, CVE-2016-4214, CVE-2016-4250, CVE-2016-4251, CVE-2016-4252, CVE-2016-4254, CVE-2016-4265, CVE-2016-4266, CVE-2016-4267, CVE-2016-4268, and CVE-2016-4270.
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Analysis
by VulDB Data Team • 10/03/2024
Adobe Reader and Acrobat products have long been prime targets for cyber attackers due to their widespread deployment and the complex nature of their PDF parsing capabilities. This particular vulnerability CVE-2016-4269 represents a critical memory corruption flaw that affects multiple versions of Adobe's desktop and mobile document viewers across Windows and macOS platforms. The vulnerability stems from insufficient input validation within the PDF processing engine, creating opportunities for remote code execution or denial of service conditions when processing malformed PDF files. Security researchers have identified that this flaw operates through unspecified vectors, distinguishing it from a series of related vulnerabilities that were simultaneously being addressed in the same product line.
The technical nature of CVE-2016-4269 falls under the category of memory corruption vulnerabilities, which are particularly dangerous because they can lead to arbitrary code execution when an attacker successfully manipulates memory structures during PDF file processing. This type of vulnerability typically occurs when applications fail to properly validate or sanitize input data before processing it, allowing malicious actors to craft specially crafted PDF documents that trigger buffer overflows, heap corruption, or other memory management errors. The flaw affects not only traditional Acrobat and Reader installations but also the newer DC Classic and DC Continuous versions, indicating a widespread issue within Adobe's product ecosystem that required immediate attention from security teams and enterprise administrators.
From an operational perspective, the impact of CVE-2016-4269 extends far beyond individual user systems, as it represents a significant threat to enterprise security infrastructure. Organizations that deploy Adobe Reader and Acrobat across their networks face potential compromise when users inadvertently open malicious PDF files, either through phishing campaigns, compromised websites, or malicious attachments in email communications. The vulnerability's potential for remote code execution means that attackers could gain full control over affected systems, potentially leading to data exfiltration, lateral movement within networks, and establishment of persistent backdoors. This makes the vulnerability particularly attractive to advanced persistent threat actors who seek to establish long-term access to corporate environments.
Security practitioners should note that this vulnerability aligns with several ATT&CK framework techniques including T1059 for command and script interpreter execution, T1070 for indicator removal on host, and T1105 for remote access tools. The vulnerability also maps to CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write conditions, both of which are common manifestations of memory corruption flaws. Organizations must implement layered defensive strategies including timely patch management, email filtering solutions, web application firewalls, and endpoint detection and response capabilities to protect against exploitation attempts. The vulnerability's presence across multiple product versions underscores the importance of maintaining comprehensive software inventory tracking and coordinated patch deployment processes to ensure all affected systems receive appropriate remediation.
Mitigation efforts should prioritize immediate patch deployment through Adobe's official update channels, as well as network-level controls to prevent access to potentially malicious PDF content. System administrators should also consider implementing sandboxing solutions and restricting user privileges when opening PDF files, particularly in high-risk environments. The vulnerability's classification as a critical threat by major security vendors highlights the necessity of proactive security measures including regular vulnerability assessments, penetration testing, and security awareness training for end users to reduce the attack surface and prevent successful exploitation attempts.