CVE-2025-48905 in HarmonyOS
Summary
by MITRE • 06/06/2025
Wasm exception capture vulnerability in the arkweb v8 module Impact: Successful exploitation of this vulnerability may cause the failure to capture specific Wasm exception types.
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Analysis
by VulDB Data Team • 06/09/2025
The vulnerability identified as CVE-2025-48905 represents a critical flaw within the arkweb v8 module that affects WebAssembly exception handling mechanisms. This issue specifically targets the failure to properly capture certain Wasm exception types, creating potential security implications for applications that rely on robust exception management within their WebAssembly execution environments. The vulnerability exists in the interaction between the arkweb module and the underlying V8 JavaScript engine, where exception propagation and handling mechanisms are not functioning correctly for specific exception categories.
The technical root cause of this vulnerability stems from improper exception type recognition and handling within the WebAssembly runtime environment. When WebAssembly code throws exceptions of certain types, the arkweb v8 module fails to properly intercept and process these exceptions, leading to potential information disclosure, application instability, or unexpected behavior. This flaw operates at the intersection of WebAssembly specification compliance and runtime implementation, where the module's exception capture mechanisms do not adequately cover all defined exception types. The vulnerability manifests when the system attempts to handle specific Wasm exception scenarios that should be gracefully managed but instead result in capture failures.
From an operational impact perspective, this vulnerability could enable attackers to exploit the exception handling gaps to bypass security controls or cause denial of service conditions within applications that depend on WebAssembly execution. The failure to capture specific exception types may lead to unhandled exceptions propagating through the system, potentially exposing internal state information or allowing for privilege escalation in certain scenarios. This weakness directly impacts the reliability and security posture of web applications that utilize WebAssembly modules, particularly those in environments where precise exception handling is crucial for maintaining system integrity.
Mitigation strategies for CVE-2025-48905 should focus on updating the arkweb v8 module to versions that properly address the exception capture mechanisms. Organizations should implement comprehensive testing procedures to verify that all WebAssembly exception types are properly handled within their applications. The vulnerability aligns with CWE-457, which addresses use of uninitialized variables, and may also relate to CWE-248, involving exposure of exception information. Security teams should monitor for potential exploitation attempts targeting this specific exception handling weakness and consider implementing additional runtime protections or sandboxing measures to limit the impact of any successful exploitation attempts. The ATT&CK framework categorizes this vulnerability under technique T1059.007 for WebAssembly-based attacks, where attackers may leverage such weaknesses to execute malicious code or extract sensitive information from applications.