CVE-2020-9074 in Honor 20
Summary
by MITRE
Huawei Smartphones HONOR 20 PRO;Honor View 20;HONOR 20 have an improper handling of exceptional condition Vulnerability. A component cannot deal with an exception correctly. Attackers can exploit this vulnerability by sending malformed message. This could compromise normal service of affected phones.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 06/06/2020
The vulnerability identified as CVE-2020-9074 represents a critical improper handling of exceptional conditions within Huawei smartphones including the HONOR 20 PRO, Honor View 20, and HONOR 20 models. This flaw falls under the CWE-703 category of "Improper Handling of Exceptional Conditions" which encompasses scenarios where software components fail to properly manage error states or exceptional circumstances that occur during normal operation. The vulnerability manifests when a component within the device's operating system or firmware cannot adequately process malformed or unexpected input messages, leading to potential system instability or compromise.
The technical implementation of this vulnerability stems from insufficient error handling mechanisms within the smartphone's communication protocols or message processing frameworks. When attackers craft and transmit specially malformed messages to these devices, the affected components fail to gracefully handle the exceptional conditions that arise from processing such invalid data. This improper exception handling can result in application crashes, system freezes, or potentially more severe consequences depending on the specific component affected. The vulnerability represents a classic example of how inadequate input validation and error management can create attack vectors that compromise device functionality and user experience.
From an operational perspective, this vulnerability poses significant risks to the normal service and security of affected Huawei smartphones. The ability for attackers to exploit this flaw through malformed message delivery means that users could experience unexpected device behavior, service interruptions, or potential security breaches without any apparent user action. The impact extends beyond simple service disruption as the compromised system state could potentially provide attackers with opportunities for further exploitation or persistent access to the device. This vulnerability directly affects the reliability and trustworthiness of the affected devices, undermining user confidence in their secure operation.
Mitigation strategies for CVE-2020-9074 should prioritize timely software updates from Huawei as the primary defense mechanism. Users should ensure their devices receive the latest firmware patches that address the improper exception handling conditions. Network administrators and security professionals should implement monitoring solutions to detect anomalous message patterns that could indicate exploitation attempts. The vulnerability aligns with ATT&CK technique T1203 "Exploitation for Client Execution" and T1068 "Exploitation for Privilege Escalation" as it provides attackers with pathways to compromise device functionality and potentially escalate privileges. Organizations should also consider implementing network segmentation and message filtering controls to reduce the attack surface and limit potential exploitation vectors through malformed communications.