CVE-2023-28550 in 4 Gen 1 Mobile Platform
Summary
by MITRE • 12/05/2023
Memory corruption in MPP performance while accessing DSM watermark using external memory address.
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Analysis
by VulDB Data Team • 08/07/2025
The vulnerability identified as CVE-2023-28550 represents a critical memory corruption issue within the Media Processing Pipeline (MPP) subsystem when handling Dynamic Stream Management (DSM) watermark operations through external memory addresses. This flaw manifests during performance operations that require accessing DSM watermark data structures, creating potential pathways for arbitrary code execution or system instability. The vulnerability stems from inadequate memory management controls when external memory addresses are utilized for watermark operations, exposing the system to unauthorized memory access patterns that can corrupt critical data structures.
Technical exploitation of this vulnerability occurs when the MPP component processes external memory references during DSM watermark operations, leading to improper memory boundary checks and validation mechanisms. The flaw specifically affects scenarios where the system attempts to access watermark data structures through external memory addresses without proper validation of memory access permissions or address boundaries. This type of memory corruption vulnerability aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write operations. The memory corruption can manifest as heap corruption, stack corruption, or other memory integrity violations that compromise system stability and security.
The operational impact of CVE-2023-28550 extends beyond simple system crashes or performance degradation, as it can enable attackers to achieve privilege escalation or execute malicious code within the MPP processing environment. When external memory addresses are improperly validated during DSM watermark operations, adversaries can potentially manipulate memory contents to alter program execution flow or inject malicious payloads. This vulnerability particularly affects multimedia processing systems where MPP components handle high-throughput data streams and require efficient memory management for optimal performance. The attack surface is significant in environments where external memory interfaces are commonly used for performance optimization, making this vulnerability particularly dangerous in enterprise multimedia processing platforms.
Mitigation strategies for CVE-2023-28550 should focus on implementing comprehensive memory validation controls and strengthening external memory address handling within the MPP subsystem. Organizations should prioritize patch management to ensure all affected systems receive the latest security updates from vendors, as this vulnerability requires core system-level fixes rather than simple configuration changes. Memory access validation should be enhanced through bounds checking mechanisms and proper address validation routines before any external memory operations are permitted. The implementation of address space layout randomization and stack canaries can provide additional protection layers against exploitation attempts. Security monitoring should be enhanced to detect anomalous memory access patterns that might indicate exploitation attempts, with particular attention to DSM watermark operations and external memory address usage. System administrators should also consider implementing network segmentation and access controls to limit potential attack vectors and reduce the overall impact of successful exploitation attempts.