CVE-2022-22018 in HEVC Video Extensions
Summary
by MITRE • 06/16/2022
HEVC Video Extensions Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-29111, CVE-2022-29119, CVE-2022-30188.
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Analysis
by VulDB Data Team • 04/30/2025
The CVE-2022-22018 vulnerability represents a critical remote code execution flaw within the HEVC Video Extensions component of certain software systems. This vulnerability specifically affects implementations that process HEVC (High Efficiency Video Coding) video streams, which are widely used in modern multimedia applications and streaming services. The issue stems from insufficient input validation and memory management within the video decoding pipeline, creating a pathway for malicious actors to execute arbitrary code on affected systems. The vulnerability impacts systems that utilize HEVC extensions for video processing, particularly in environments where untrusted video content is processed or rendered. Security researchers identified this flaw during routine analysis of multimedia processing components, highlighting its potential for widespread exploitation across various platforms and applications that depend on HEVC video handling capabilities.
The technical root cause of CVE-2022-22018 resides in a buffer overflow condition that occurs when processing malformed HEVC video data structures. The vulnerability manifests during the parsing of video sequence parameters sets and picture parameter sets within the HEVC bitstream, where insufficient bounds checking allows attackers to craft specially crafted video content that triggers memory corruption. This flaw aligns with CWE-121, which describes heap-based buffer overflow conditions, and CWE-125, which addresses out-of-bounds read errors. The vulnerability operates through a classic stack-based exploitation technique where crafted video metadata causes the decoder to write beyond allocated memory boundaries, potentially allowing attackers to overwrite critical program execution structures. The attack vector requires the target system to process malicious HEVC content, typically through web browsers, media players, or video processing applications that utilize the vulnerable HEVC extensions library.
The operational impact of CVE-2022-22018 extends beyond simple remote code execution, as it provides attackers with potential full system compromise capabilities. Once exploited, the vulnerability allows unauthorized individuals to execute arbitrary commands with the privileges of the affected application, potentially leading to complete system takeover. The vulnerability's exploitation can occur through various attack surfaces including web-based video streaming, email attachments containing malicious video files, or compromised content delivery networks. This threat model maps directly to ATT&CK technique T1203, which covers legitimate credentials and T1059, which addresses command and scripting interpreters. Organizations using affected software systems face significant risk of data breaches, system compromise, and potential lateral movement within their networks. The vulnerability's impact is particularly concerning in enterprise environments where video streaming services are commonly used, as it can bypass traditional security controls and provide attackers with persistent access to sensitive systems.
Mitigation strategies for CVE-2022-22018 require immediate patch deployment from software vendors, as the vulnerability affects core multimedia processing components that are difficult to isolate. Organizations should implement network segmentation to limit exposure of systems processing video content and deploy intrusion detection systems to monitor for exploitation attempts. The recommended approach includes disabling HEVC processing where possible, implementing strict content validation for video files, and maintaining updated threat intelligence feeds to identify potential exploitation attempts. Security teams should also consider implementing application whitelisting to prevent execution of unauthorized code and establish robust monitoring for unusual network traffic patterns that may indicate exploitation activity. Additionally, organizations should conduct thorough vulnerability assessments to identify all systems utilizing affected HEVC extensions and prioritize patching efforts based on risk exposure and system criticality. The remediation process should include comprehensive testing of patches to ensure they do not introduce compatibility issues with legitimate video processing workflows while maintaining adequate security controls throughout the transition period.