CVE-2018-18330 in Dr. Safety for Android
Summary
by MITRE
An Address Bar Spoofing vulnerability in Trend Micro Dr. Safety for Android (Consumer) versions 3.0.1324 and below could allow an attacker to potentially trick a victim into visiting a malicious URL using address bar spoofing on the Private Browser of the app on vulnerable installations.
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Analysis
by VulDB Data Team • 04/23/2020
The Address Bar Spoofing vulnerability identified as CVE-2018-18330 represents a critical security flaw in Trend Micro Dr. Safety for Android consumer versions 3.0.1324 and earlier. This vulnerability specifically affects the private browsing functionality of the application, creating a deceptive user interface that can mislead users about the actual destination of their web navigation. The flaw exploits the trust users place in the browser's address bar, which is typically expected to display the true URL of the visited website. When exploited, this vulnerability allows attackers to manipulate the displayed URL in the address bar to appear as a legitimate website while actually directing users to malicious domains. The security implications are particularly severe given that the vulnerability targets the private browsing feature, which users often consider to be more secure and trustworthy than regular browsing modes.
The technical implementation of this address bar spoofing vulnerability stems from inadequate validation and sanitization of URL display mechanisms within the application's private browsing interface. The flaw likely resides in how the application processes and presents URL information to users, potentially allowing attacker-controlled content to override or manipulate the displayed address. This type of vulnerability falls under the CWE-601 vulnerability category, specifically CWE-601 URL Redirector Abuse, which describes situations where applications fail to properly validate redirects or URL displays, allowing attackers to manipulate user navigation. The vulnerability's exploitation requires the victim to be using a vulnerable version of the Trend Micro Dr. Safety application, making it particularly concerning for users who have not updated to the latest version of the software. Attackers can leverage this flaw by crafting malicious web content or phishing pages that appear to be legitimate websites when displayed in the spoofed address bar, potentially leading to credential theft, malware installation, or financial fraud.
The operational impact of this vulnerability extends beyond simple deception to potentially enable sophisticated attack vectors that could compromise user data and device security. Users engaging in private browsing sessions, which are typically associated with sensitive activities such as online banking, email access, or confidential document viewing, become vulnerable to attacks that could bypass their security expectations. The vulnerability creates a false sense of security for users who believe they are accessing legitimate websites through the private browsing feature, when in fact they are being redirected to malicious sites. This attack vector aligns with the tactics described in the MITRE ATT&CK framework under the T1071.004 technique for Application Layer Protocol: Web Protocols, where attackers manipulate web browser behavior to achieve unauthorized access or data exfiltration. The potential for credential harvesting increases significantly as users may unknowingly enter login credentials on spoofed pages that appear legitimate, particularly in high-value targets such as financial institutions or corporate portals.
Mitigation strategies for CVE-2018-18330 must focus on immediate software updates and user education to address the vulnerability effectively. Organizations and individuals should prioritize updating to Trend Micro Dr. Safety versions that have patched this vulnerability, as the manufacturer has likely released security updates addressing the address bar spoofing implementation. The recommended approach includes implementing mandatory update policies for all devices running vulnerable versions of the application, combined with user awareness training about the dangers of address bar manipulation and the importance of verifying URLs even in private browsing sessions. Security teams should also consider network-level monitoring to detect suspicious URL patterns or attempts to manipulate browser address bars, particularly in enterprise environments where users may be accessing sensitive systems. Additional defensive measures include implementing browser security extensions or alternative security solutions that provide additional URL verification layers beyond what the vulnerable application provides. The vulnerability underscores the importance of continuous security assessment and the need for robust input validation in mobile applications, particularly those handling sensitive user data through browser interfaces. Organizations should also consider implementing security monitoring tools that can detect and alert on potential address bar spoofing attempts, as this type of attack can be particularly difficult to identify through traditional security controls.