CVE-2022-47662 in GPAC
Summary
by MITRE • 01/05/2023
GPAC MP4Box 2.1-DEV-rev649-ga8f438d20 has a segment fault (/stack overflow) due to infinite recursion in Media_GetSample isomedia/media.c:662
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Analysis
by VulDB Data Team • 01/29/2023
The vulnerability identified as CVE-2022-47662 affects GPAC MP4Box version 2.1-DEV-rev649-ga8f438d20 and represents a critical stack-based buffer overflow condition that manifests as a segmentation fault. This issue stems from an infinite recursion scenario within the Media_GetSample function located in the isomedia/media.c source file at line 662. The flaw occurs when processing malformed media files that trigger recursive calls without proper termination conditions, leading to excessive stack consumption and eventual system crash.
The technical implementation of this vulnerability demonstrates a classic stack overflow pattern where the recursive function calls continue indefinitely until the stack memory space is exhausted. The Media_GetSample function in the isomedia module appears to lack adequate base case validation or recursion depth limiting mechanisms, allowing maliciously crafted media files to exploit this weakness. When the function encounters malformed input data structures, it recursively invokes itself without proper boundary checks, causing the stack to grow uncontrollably until a segmentation fault occurs.
This vulnerability presents significant operational impact for systems utilizing GPAC MP4Box for media processing, particularly in environments where untrusted media files are processed automatically. Attackers could leverage this flaw through crafted media files that trigger the infinite recursion path, potentially causing denial of service conditions that disrupt legitimate media processing workflows. The segmentation fault resulting from this stack overflow can lead to complete application crashes, requiring system restarts and potentially enabling attackers to disrupt service availability in critical infrastructure scenarios.
The vulnerability aligns with CWE-674, which specifically addresses "Uncontrolled Recursion" in software systems, and demonstrates characteristics consistent with ATT&CK technique T1499.004 for "Endpoint Denial of Service." Organizations using GPAC MP4Box should implement immediate mitigations including input validation controls, recursion depth limiting mechanisms, and comprehensive testing of media file processing workflows. Additionally, deployment of intrusion detection systems capable of identifying abnormal stack usage patterns and implementing proper sandboxing techniques for media processing operations can help reduce the risk exposure. The recommended remediation involves patching to version 2.1-DEV-rev650 or later, which includes proper recursion termination checks and stack overflow protection mechanisms in the Media_GetSample function implementation.