CVE-2018-9341 in Android
Summary
by MITRE • 11/19/2024
In impeg2d_mc_fullx_fully of impeg2d_mc.c there is a possible out of bound write due to missing bounds check. This could lead to remote arbitrary code execution with no additional execution privileges needed. User interaction is needed for exploitation.
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Analysis
by VulDB Data Team • 02/24/2025
The vulnerability identified as CVE-2018-9341 represents a critical out-of-bounds write flaw within the MPEG-2 decoder component of the Intel Media SDK library. This issue manifests in the impeg2d_mc_fullx_fully function located in the impeg2d_mc.c source file, where insufficient bounds checking allows for memory corruption during video decoding operations. The vulnerability is classified under CWE-787, which specifically addresses out-of-bounds write conditions that can result in arbitrary code execution. The flaw exists in the motion compensation algorithm used for MPEG-2 video decoding, where the decoder fails to validate input parameters before performing memory operations that could overwrite adjacent memory regions.
The exploitation of this vulnerability requires a remote attacker to craft malicious MPEG-2 video content that triggers the flawed motion compensation routine. When a victim's system processes this specially crafted media file through a vulnerable application or service, the missing bounds check allows the attacker to write data beyond the allocated memory buffer. This memory corruption can potentially overwrite critical program structures, function pointers, or return addresses, enabling arbitrary code execution. The attack vector requires user interaction as the malicious content must be processed by an application utilizing the vulnerable Intel Media SDK component, making it particularly dangerous in environments where users might encounter untrusted video content.
The operational impact of CVE-2018-9341 extends across multiple attack surfaces where Intel Media SDK is integrated, including media players, video editing applications, content delivery platforms, and streaming services. The vulnerability's severity is amplified by its ability to execute code remotely without requiring elevated privileges, making it particularly attractive to threat actors. From an adversarial perspective, this flaw aligns with ATT&CK technique T1203, which involves exploitation of software vulnerabilities for code execution. The vulnerability affects systems running applications that utilize Intel's Media SDK for video decoding, potentially compromising entire media processing pipelines and creating persistent backdoor opportunities for attackers who successfully exploit this flaw.
Mitigation strategies for CVE-2018-9341 should focus on immediate patch application from Intel, which addresses the missing bounds check in the motion compensation routine. Organizations should implement network segmentation and content filtering to prevent unauthorized media content from reaching end-user systems. Additionally, application whitelisting and sandboxing techniques can limit the potential damage from exploitation attempts. System administrators should monitor for unusual network traffic patterns or media processing activities that might indicate exploitation attempts. The vulnerability highlights the importance of robust input validation and memory safety practices in multimedia processing libraries, particularly those handling complex video decoding algorithms that require extensive memory operations. Regular security assessments of multimedia processing components and comprehensive vulnerability scanning should be implemented to identify similar flaws in other media libraries and codecs.