CVE-2018-7932 in AppGallery
Summary
by MITRE
Huawei AppGallery versions before 8.0.4.301 has an arbitrary Javascript running vulnerability. An attacker may set up a malicious network environment and trick user into accessing a malicious web page to bypass the whitelist mechanism, which make the malicious Javascript loaded and run in the smart phone.
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Analysis
by VulDB Data Team • 03/07/2023
The vulnerability identified as CVE-2018-7932 affects Huawei AppGallery client applications running versions prior to 8.0.4.301, representing a critical security flaw that allows for arbitrary javascript execution on affected mobile devices. This vulnerability stems from insufficient validation mechanisms within the AppGallery client that processes web content and handles external javascript references. The flaw creates a pathway for attackers to bypass existing whitelist protections through malicious network manipulation, enabling remote code execution within the context of the mobile application environment.
The technical implementation of this vulnerability involves a sophisticated attack vector that leverages man-in-the-middle network conditions to manipulate the delivery of javascript content to the vulnerable AppGallery client. When users navigate to compromised web pages, the malicious javascript code can be loaded and executed without proper security restrictions that should normally prevent such operations. The vulnerability specifically targets the client-side javascript execution environment within the AppGallery application, which operates under the assumption that only trusted content can be executed, creating a false sense of security that attackers can exploit.
From an operational perspective, this vulnerability presents significant risks to end-user security and privacy, as it allows attackers to execute arbitrary code on mobile devices without requiring local system compromise or user interaction beyond visiting a malicious webpage. The impact extends beyond simple data theft to potentially include full device compromise, as the malicious javascript can leverage the AppGallery client's permissions and access patterns to perform actions that would normally require elevated privileges. The vulnerability also poses risks to enterprise environments where employees may access corporate networks through affected devices, potentially creating lateral movement opportunities for attackers.
The security implications of CVE-2018-7932 align with CWE-94, which describes weaknesses in the design or implementation of code that allows for arbitrary code execution. This vulnerability specifically manifests as a code injection issue where untrusted input from network sources is not properly validated or sanitized before execution. The attack pattern follows typical techniques described in the ATT&CK framework under T1059.007 for JavaScript execution, demonstrating how attackers can leverage web-based delivery mechanisms to achieve their objectives without requiring traditional exploit payloads. Organizations should implement immediate mitigations including updating to AppGallery version 8.0.4.301 or later, implementing network-level protections such as DNS filtering and content inspection, and educating users about avoiding suspicious web content. Additional defensive measures should include monitoring for unusual javascript execution patterns and implementing network segmentation to limit the potential impact of successful exploitation attempts.