CVE-2014-4936 in Anti-Malware
Summary
by MITRE
The upgrade functionality in Malwarebytes Anti-Malware (MBAM) consumer before 2.0.3 and Malwarebytes Anti-Exploit (MBAE) consumer 1.04.1.1012 and earlier allow man-in-the-middle attackers to execute arbitrary code by spoofing the update server and uploading an executable.
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Analysis
by VulDB Data Team • 08/03/2025
The vulnerability identified as CVE-2014-4936 represents a critical security flaw in the update mechanisms of Malwarebytes Anti-Malware and Malwarebytes Anti-Exploit consumer products. This issue affects versions prior to 2.0.3 for MBAM and MBAE versions 1.04.1.1012 and earlier, creating a significant attack vector that allows malicious actors to compromise systems through man-in-the-middle techniques. The flaw fundamentally undermines the integrity of the software update process, which is a critical component of endpoint security solutions.
The technical implementation of this vulnerability stems from insufficient cryptographic verification and authentication mechanisms within the update functionality. Attackers can exploit this weakness by intercepting update communications and spoofing legitimate update servers, effectively replacing legitimate executable files with malicious payloads. This type of attack falls under the category of man-in-the-middle attacks as defined by the MITRE ATT&CK framework, specifically mapping to techniques involving credential access and execution through network traffic interception. The vulnerability creates a trust relationship that can be easily compromised, allowing attackers to execute arbitrary code with the privileges of the affected software process.
The operational impact of CVE-2014-4936 extends beyond simple code execution, as it fundamentally compromises the security posture of infected systems. When successful, this attack allows adversaries to bypass traditional security controls and establish persistent access to compromised endpoints. The attack vector is particularly dangerous because it targets the update mechanism itself, which users typically trust and expect to be secure. This vulnerability directly violates the principle of least privilege and can lead to complete system compromise, as the executed malicious code can leverage the elevated privileges associated with legitimate software processes. The affected software products are designed to protect against malware, yet this vulnerability creates an entry point that undermines their protective capabilities.
Mitigation strategies for this vulnerability require immediate patching of affected systems to versions 2.0.3 or later for MBAM and appropriate versions for MBAE. Organizations should implement network monitoring to detect suspicious update traffic and consider deploying network segmentation to limit the scope of potential attacks. The vulnerability demonstrates the critical importance of secure update mechanisms and proper code signing practices, aligning with CWE-310 standards for cryptographic weaknesses and secure communication protocols. Security teams should also conduct thorough vulnerability assessments of other security products to ensure similar weaknesses do not exist in their security infrastructure, as this type of attack can be applied to any software with insecure update mechanisms. The incident highlights the necessity of implementing robust certificate pinning and secure communication protocols to prevent such man-in-the-middle attacks from succeeding.