CVE-2015-8225 in ALE Smartphone
Summary
by MITRE
The Joint Photographic Experts Group Processing Unit (JPU) driver in Huawei ALE smartphones with software before ALE-UL00C00B220 and ALE-TL00C01B220 and GEM-703L smartphones with software before V100R001C233B111 allows remote attackers to cause a denial of service (crash) via a crafted application with the system or camera permission, a different vulnerability than CVE-2015-8226.
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Analysis
by VulDB Data Team • 06/06/2018
The vulnerability identified as CVE-2015-8225 represents a critical denial of service flaw within the Joint Photographic Experts Group Processing Unit driver component of Huawei smartphone firmware. This issue specifically affects ALE series devices running software versions prior to ALE-UL00C00B220 and ALE-TL00C00B220, as well as GEM-703L devices with firmware versions before V100R001C233B111. The JPU driver serves as a crucial system component responsible for processing photographic data and managing camera operations, making it a prime target for exploitation by malicious actors seeking to disrupt device functionality.
The technical exploitation mechanism involves a crafted application that leverages either system or camera permissions to trigger the vulnerability. This approach demonstrates a sophisticated understanding of Android permission models and kernel-level driver interactions. The flaw operates at the intersection of application-level privilege escalation and kernel driver manipulation, where malicious code can manipulate the JPU driver through carefully constructed input parameters that cause the driver to crash or become unresponsive. This vulnerability falls under the CWE-119 weakness category, specifically addressing "Improper Restriction of Operations within the Bounds of a Memory Buffer" and represents a classic example of a buffer overflow or memory corruption vulnerability within kernel space components.
The operational impact of this vulnerability extends beyond simple device disruption, as it provides attackers with the capability to remotely compromise the functionality of affected Huawei smartphones. When exploited successfully, the vulnerability results in system crashes that can render the device temporarily or permanently unusable, effectively creating a denial of service condition that impacts user productivity and device reliability. The fact that this vulnerability requires either system or camera permissions indicates that it can be exploited through legitimate application installation processes, making it particularly dangerous in environments where users may unknowingly install malicious applications. This aligns with ATT&CK technique T1068, which describes "Exploitation for Privilege Escalation" and highlights how attackers can leverage system-level permissions to gain deeper access to device functionality.
The vulnerability's distinction from CVE-2015-8226 demonstrates the complexity of mobile security and the need for comprehensive vulnerability assessment across different system components. Both vulnerabilities affect the same underlying driver but through different attack vectors, indicating that the JPU driver implementation contains multiple exploitable weaknesses that require comprehensive patching approaches. The affected device models represent a significant portion of Huawei's smartphone portfolio from 2015, making this vulnerability particularly widespread and impactful. Security researchers have noted that such driver-level vulnerabilities are particularly concerning because they operate below the application layer and can bypass traditional application sandboxing mechanisms, providing attackers with direct access to core system functionality.
Mitigation strategies for CVE-2015-8225 should prioritize immediate firmware updates from Huawei, which would include patches addressing the JPU driver implementation and proper input validation mechanisms. Organizations and individuals should also implement application whitelisting policies to prevent installation of untrusted applications that could exploit these permission-based vulnerabilities. Network-level monitoring should be enhanced to detect potential exploitation attempts through unusual camera or system permission usage patterns. The vulnerability serves as a reminder of the critical importance of maintaining up-to-date firmware and the need for comprehensive mobile security policies that address both application-level and kernel-level threats. Security teams should also consider implementing device integrity monitoring solutions that can detect unauthorized modifications to system drivers and kernel components, as these vulnerabilities often indicate broader security weaknesses within the mobile platform architecture.