CVE-2022-45283 is a high-severity stack overflow vulnerability identified in GPAC MP4Box version 2.0.0, specifically within the smil_parse_time_list parameter located in the /scenegraph/svg_attributes.c source file. GPAC MP4Box is a multimedia packaging tool widely used for processing MP4 files and related media formats. The vulnerability arises due to improper handling of input data in the smil_parse_time_list parameter, leading to a stack-based buffer overflow (CWE-787). This type of vulnerability can allow an attacker to overwrite the stack memory, potentially enabling arbitrary code execution, denial of service, or other malicious activities. The CVSS 3.1 base score of 7.8 reflects a high severity, with the vector indicating that the attack requires local access (AV:L), low attack complexity (AC:L), no privileges required (PR:N), but does require user interaction (UI:R). The impact on confidentiality, integrity, and availability is rated high, meaning successful exploitation could lead to full system compromise. No known exploits are currently reported in the wild, and no patches or vendor advisories are listed, which suggests that mitigation may require manual intervention or cautious use of the affected software. Given the local attack vector and requirement for user interaction, exploitation likely involves tricking a user into processing a crafted media file using the vulnerable MP4Box tool. The vulnerability is significant for environments where GPAC MP4Box is used for media processing, especially in automated or user-facing applications that handle untrusted media content.

For European organizations, the impact of CVE-2022-45283 can be substantial in sectors relying on multimedia processing workflows that incorporate GPAC MP4Box, such as media production companies, broadcasters, digital content distributors, and software developers integrating MP4Box into their toolchains. Successful exploitation could lead to arbitrary code execution on systems processing malicious media files, resulting in data breaches, system downtime, or lateral movement within networks. The high impact on confidentiality, integrity, and availability means sensitive media assets and related infrastructure could be compromised. Additionally, organizations involved in critical infrastructure or governmental media services may face operational disruptions or espionage risks. Since exploitation requires local access and user interaction, insider threats or social engineering attacks could be vectors. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits over time. The lack of official patches increases the urgency for organizations to implement compensating controls to prevent exploitation.

1. Limit the use of GPAC MP4Box v2.0.0 to trusted environments and avoid processing untrusted or unauthenticated media files. 2. Implement strict input validation and sandboxing around media processing workflows to contain potential exploitation attempts. 3. Employ application whitelisting and endpoint protection solutions that can detect anomalous behavior indicative of exploitation attempts. 4. Restrict local access to systems running GPAC MP4Box to authorized personnel only, and enforce strong user authentication and access controls. 5. Educate users about the risks of opening or processing untrusted media files, emphasizing the need to avoid social engineering traps. 6. Monitor system logs and behavior for signs of stack overflow exploitation or crashes related to MP4Box usage. 7. Consider using alternative, patched multimedia processing tools if available, or apply manual code reviews and custom patches if feasible. 8. Maintain up-to-date backups of critical media assets to enable recovery in case of compromise or denial of service.