CVE-2021-22348 in Huawei
Summary
by MITRE • 07/01/2021
There is a Memory Buffer Improper Operation Limit Vulnerability in Huawei Smartphone. Successful exploitation of this vulnerability may cause code to execute.
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Analysis
by VulDB Data Team • 07/04/2021
The vulnerability identified as CVE-2021-22348 represents a critical memory buffer improper operation limit issue affecting Huawei smartphones. This flaw resides within the device's operating system or firmware components that handle memory management operations, specifically concerning buffer size validation and boundary checking mechanisms. The vulnerability manifests when the system processes data structures that require specific memory allocation patterns, but fails to properly validate input parameters or enforce adequate buffer limits during memory operations. Such deficiencies create opportunities for malicious actors to manipulate memory layouts and potentially execute arbitrary code within the device's execution environment.
The technical nature of this vulnerability aligns with CWE-129, which describes improper validation of length of buffers, and CWE-787, which addresses out-of-bounds write operations. The flaw typically occurs when applications or system services process user-supplied data without adequate bounds checking, allowing attackers to overflow memory buffers and overwrite adjacent memory locations. In the context of smartphone environments, this can affect various system components including network protocols, multimedia processing, or system service handlers that manage data from external sources. The vulnerability's exploitation potential stems from the fact that memory corruption flaws often provide attackers with pathways to achieve privilege escalation and code execution within the target environment.
Operationally, this vulnerability presents significant risks to Huawei smartphone users and organizations relying on these devices for business operations. Successful exploitation could enable attackers to execute malicious code with elevated privileges, potentially leading to complete device compromise, data theft, or persistent backdoor access. The attack surface extends beyond individual device security to encompass enterprise environments where smartphones may serve as entry points for broader network infiltration. Mobile threat actors frequently target such memory corruption vulnerabilities due to their reliability and the high-value targets they represent. The impact extends to user privacy, corporate data protection, and overall device integrity, as attackers could potentially install malware, monitor communications, or gain unauthorized access to sensitive information stored on or processed by the affected devices.
Mitigation strategies for CVE-2021-22348 should prioritize immediate firmware updates from Huawei as the primary defense mechanism. Organizations should implement comprehensive mobile device management policies that enforce timely security patches across all deployed devices. Additional protective measures include network monitoring for suspicious activities, application whitelisting to prevent unauthorized code execution, and regular security assessments of mobile environments. The ATT&CK framework categorizes such vulnerabilities under T1059.007 for Windows Command Shell and similar execution techniques that leverage memory corruption flaws. Security teams should also consider implementing mobile application security controls, network segmentation, and endpoint detection and response solutions to detect potential exploitation attempts. Regular vulnerability scanning and penetration testing specifically targeting memory management components will help identify and remediate similar weaknesses in the broader mobile ecosystem.