CVE-2018-5011 in Acrobat Reader
Summary
by MITRE
Adobe Acrobat and Reader 2018.011.20040 and earlier, 2017.011.30080 and earlier, and 2015.006.30418 and earlier versions have a Use-after-free vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 04/06/2023
The vulnerability identified as CVE-2018-5011 represents a critical use-after-free flaw affecting multiple versions of Adobe Acrobat and Reader software. This issue stems from improper memory management within the affected applications, specifically in how they handle certain objects in memory after their intended use has concluded. The vulnerability manifests when the software attempts to access memory locations that have already been freed or deallocated, creating a potential entry point for malicious actors to execute arbitrary code within the context of the currently logged-in user.
The technical nature of this vulnerability places it squarely within the CWE-416 category of use-after-free conditions, which is a well-documented class of memory safety issues that have historically led to significant security breaches across various software platforms. The flaw occurs during the processing of specific file formats or embedded content within the Acrobat and Reader applications, where the software fails to properly validate object references before accessing them. This memory management error creates a window of opportunity for attackers to manipulate the application's behavior through carefully crafted malicious content.
From an operational impact perspective, successful exploitation of this vulnerability could enable attackers to execute arbitrary code with the privileges of the current user account, potentially leading to complete system compromise. The attack surface is particularly concerning given the widespread use of Adobe Acrobat and Reader across enterprise environments, making this vulnerability a high-priority target for threat actors seeking persistent access to organizational networks. The vulnerability's exploitation requires user interaction, typically through opening a maliciously crafted document, which aligns with common attack patterns documented in the ATT&CK framework under initial access and execution techniques.
Organizations affected by this vulnerability should prioritize immediate remediation through official Adobe security patches, as the use-after-free condition creates a direct path for privilege escalation attacks. The mitigation strategy should include comprehensive patch management procedures, user education regarding suspicious document attachments, and network monitoring for potential exploitation attempts. Security teams should also consider implementing application whitelisting policies to restrict execution of untrusted PDF content and establish incident response protocols specifically addressing potential exploitation of memory corruption vulnerabilities. The vulnerability's classification as a use-after-free error underscores the critical importance of proper memory management practices and regular security assessments to prevent similar issues from emerging in software applications.