CVE-2021-22331 in P30
Summary
by MITRE • 04/28/2021
There is a JavaScript injection vulnerability in certain Huawei smartphones. A module does not verify some inputs sufficiently. Attackers can exploit this vulnerability by sending a malicious application request to launch JavaScript injection. This may compromise normal service. Affected product versions include HUAWEI P30 versions earlier than 10.1.0.165(C01E165R2P11), 11.0.0.118(C635E2R1P3), 11.0.0.120(C00E120R2P5), 11.0.0.138(C10E4R5P3), 11.0.0.138(C185E4R7P3), 11.0.0.138(C432E8R2P3), 11.0.0.138(C461E4R3P3), 11.0.0.138(C605E4R1P3), and 11.0.0.138(C636E4R3P3).
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Analysis
by VulDB Data Team • 05/02/2021
This javascript injection vulnerability in huawei smartphones represents a critical security flaw that falls under the cwe-79 category of cross-site scripting attacks. The vulnerability exists within a specific module that fails to adequately validate input parameters, creating an exploitable condition where malicious javascript code can be injected through application requests. The flaw demonstrates poor input sanitization practices that allow attackers to bypass normal security controls and execute arbitrary code within the device's javascript environment.
The technical implementation of this vulnerability stems from insufficient input validation mechanisms within the affected huawei smartphone operating systems. When applications send requests to the vulnerable module, the system does not properly filter or escape user-supplied data before processing it, enabling attackers to inject malicious javascript payloads. This weakness specifically impacts huawei p30 devices running versions prior to the listed secure releases, with multiple affected version ranges indicating a widespread issue across different software builds and release cycles. The vulnerability affects the core operating system functionality rather than just individual applications, making it particularly dangerous as it can compromise the entire device's security posture.
From an operational perspective, this vulnerability creates significant risks for users and organizations relying on affected huawei devices. Attackers can exploit the javascript injection flaw to gain unauthorized access to device functions, potentially leading to data theft, privacy violations, and complete device compromise. The attack vector through malicious application requests suggests that even seemingly legitimate applications could be used as delivery mechanisms for the exploit, making detection and prevention more challenging. This vulnerability aligns with att&ck technique t1059.007 for javascript execution and represents a persistent threat that could enable further attacks through privilege escalation or lateral movement within compromised networks.
The impact extends beyond individual device compromise to potential enterprise security risks, as affected devices may serve as entry points for broader network attacks. Organizations using huawei p30 devices in corporate environments face increased risk of data breaches and unauthorized access to sensitive information. The vulnerability's exploitation requires minimal technical expertise, making it attractive to threat actors across the security threat spectrum. Mitigation efforts should focus on immediate firmware updates to the patched versions, network monitoring for suspicious application behavior, and implementation of device access controls to limit potential exploitation. Security teams should also consider network segmentation and endpoint detection measures to identify and prevent exploitation attempts. The vulnerability highlights the importance of proper input validation and secure coding practices in mobile operating system development, emphasizing the need for comprehensive security testing before software releases.