CVE-2025-0302 in OpenHarmony
Summary
by MITRE • 02/07/2025
in OpenHarmony v4.1.2 and prior versions allow a local attacker cause DOS through integer overflow.
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Analysis
by VulDB Data Team • 02/07/2025
The vulnerability identified as CVE-2025-0302 affects OpenHarmony versions 4.1.2 and earlier, presenting a critical security risk through an integer overflow condition that can be exploited by local attackers to induce denial of service. This flaw resides within the operating system's core components and represents a fundamental weakness in input validation and arithmetic handling mechanisms. The integer overflow occurs when the system processes certain numerical values that exceed the maximum limit for the data type being used, causing unexpected behavior and system instability. Such vulnerabilities are particularly dangerous in embedded and IoT environments where OpenHarmony is commonly deployed, as they can compromise the availability and reliability of critical devices and services.
The technical implementation of this vulnerability demonstrates poor boundary checking and insufficient validation of integer inputs within the system's kernel or core libraries. When an attacker can manipulate data that eventually leads to integer overflow conditions, the system may experience memory corruption, unexpected program termination, or complete system hang. The flaw likely manifests during operations involving array indexing, buffer calculations, or loop counters where integer arithmetic is performed without proper overflow detection. This type of vulnerability falls under the CWE-190 category of Integer Overflow or Wraparound, which is classified as a high-risk weakness due to its potential for causing system instability and enabling further exploitation. The ATT&CK framework would categorize this under T1499.004 for Network Denial of Service and potentially T1059 for command execution through system manipulation.
The operational impact of CVE-2025-0302 extends beyond simple system crashes, as local attackers with minimal privileges can leverage this weakness to disrupt service availability across devices running affected OpenHarmony versions. In enterprise environments, this could lead to widespread disruption of IoT networks, industrial control systems, or mobile device functionality. The vulnerability's local nature means that exploitation requires physical access or execution privileges on the target device, but this access level is often achievable in many deployment scenarios. The integer overflow can be triggered through malformed inputs, crafted data sequences, or by manipulating system parameters that eventually cause the arithmetic overflow. Device manufacturers and system administrators must be particularly concerned about this vulnerability in environments where OpenHarmony is used for mission-critical operations, as the denial of service condition can persist until system reboot occurs.
Mitigation strategies for CVE-2025-0302 should prioritize immediate patching of affected OpenHarmony installations to version 4.1.3 or later, which contains the necessary fixes for the integer overflow conditions. Organizations should implement comprehensive monitoring of system behavior for unusual patterns that might indicate exploitation attempts, particularly around memory allocation and process termination events. Input validation controls should be strengthened throughout the system to prevent malformed data from reaching vulnerable code paths, while runtime checks should be implemented to detect and prevent integer overflow conditions before they can cause system instability. System hardening measures including address space layout randomization and stack canaries can provide additional protection against exploitation attempts. Security teams should also conduct thorough vulnerability assessments of all OpenHarmony deployments to identify potential attack vectors and ensure that all affected devices receive timely updates. The remediation process must include proper testing of patches to prevent regression issues while maintaining system functionality, as the fixes for integer overflow conditions may inadvertently affect legitimate system operations.