CVE-2015-8682 in Huawei
Summary
by MITRE
The Video0 driver in Huawei P8 smartphones with software GRA-UL00 before GRA-UL00C00B350, GRA-UL10 before GRA-UL10C00B350, GRA-TL00 before GRA-TL00C01B350, GRA-CL00 before GRA-CL00C92B350, and GRA-CL10 before GRA-CL10C92B350 and Mate S smartphones with software CRR-TL00 before CRR-TL00C01B160SP01, CRR-UL00 before CRR-UL00C00B160, and CRR-CL00 before CRR-CL00C92B161 allows attackers to obtain sensitive information from stack memory or cause a denial of service (system crash) via a crafted application, which triggers an invalid memory access.
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Analysis
by VulDB Data Team • 07/24/2022
The vulnerability identified as CVE-2015-8682 resides within the Video0 driver component of Huawei P8 smartphones and Mate S devices, representing a critical security flaw that affects multiple hardware platforms and software versions. This issue stems from improper memory management within the video driver subsystem, specifically when processing maliciously crafted applications that exploit memory access patterns. The affected devices operate under various software variants including GRA-UL00, GRA-UL10, GRA-TL00, GRA-CL00, GRA-CL10, CRR-TL00, CRR-UL00, and CRR-CL00, with specific version thresholds indicating the scope of impacted firmware releases. The vulnerability manifests when legitimate applications attempt to interact with the Video0 driver through improper memory access operations, creating an exploitable condition that can be leveraged by attackers to gain unauthorized access to sensitive system information.
The technical root cause of this vulnerability aligns with CWE-125, which describes out-of-bounds read conditions in software implementations. The Video0 driver fails to properly validate memory access requests from user applications, allowing attackers to manipulate memory pointers and access regions beyond allocated buffer boundaries. When a malicious application triggers the vulnerable driver, it can read data from adjacent memory locations containing sensitive information such as encryption keys, authentication credentials, or other confidential system data stored in stack memory. This improper memory access pattern also enables potential denial of service conditions where system stability is compromised through invalid memory operations that cause kernel panics or system crashes. The vulnerability demonstrates characteristics consistent with memory corruption flaws that fall under the ATT&CK technique T1068, which involves exploiting legitimate credentials and system access to gain elevated privileges and access sensitive information.
The operational impact of CVE-2015-8682 extends beyond simple information disclosure, as it creates multiple attack vectors for threat actors seeking to compromise Huawei mobile devices. Attackers can exploit this vulnerability to extract sensitive data from the device's memory without requiring physical access or complex exploitation techniques, making it particularly dangerous for users handling confidential information. The vulnerability affects a broad range of Huawei smartphones including popular models like the P8 and Mate S, which are widely deployed in enterprise and consumer environments. The potential for denial of service scenarios means that legitimate users may experience unexpected system crashes or complete device failures, disrupting normal operations. Additionally, the vulnerability could serve as a stepping stone for more sophisticated attacks, as the information disclosure capabilities might reveal system internals that could be used to develop additional exploits targeting other components of the mobile operating system.
Mitigation strategies for this vulnerability require immediate firmware updates from Huawei to address the memory access validation issues within the Video0 driver. Users should ensure their devices are running the latest software versions that contain patches for this vulnerability, particularly those released after the affected version thresholds mentioned in the CVE description. Device manufacturers should implement robust input validation mechanisms within driver components to prevent unauthorized memory access operations. Network security teams should monitor for potential exploitation attempts targeting these vulnerable devices and consider implementing mobile device management policies that enforce secure firmware updates. The vulnerability highlights the importance of secure coding practices in embedded systems and driver development, emphasizing the need for comprehensive memory safety testing and validation before deployment. Organizations using Huawei devices should conduct vulnerability assessments to identify affected systems and implement appropriate security controls to protect against potential exploitation of this memory corruption flaw.