CVE-2024-36613 identifies an integer overflow vulnerability in the DXA demuxer of the libavformat library within FFmpeg version 6.1.1. The DXA demuxer is responsible for parsing certain multimedia container formats. The integer overflow occurs when processing crafted input data, causing arithmetic operations to exceed the maximum value representable by an integer variable, leading to wraparound or unexpected values. This can result in memory corruption or logic errors that cause the application to crash or behave unpredictably, effectively enabling a denial-of-service (DoS) condition. The vulnerability does not require any privileges or user interaction to exploit, but the attack vector is local, meaning an attacker must have the ability to supply malicious media files to the vulnerable FFmpeg instance. The CVSS 3.1 base score is 6.2, reflecting medium severity, with the vector indicating low attack complexity, no privileges required, no user interaction, and impact limited to availability. No known public exploits or active exploitation campaigns have been reported to date. The vulnerability is classified under CWE-190 (Integer Overflow or Wraparound), a common weakness that can lead to various memory safety issues. Since FFmpeg is widely used in multimedia processing, streaming, and broadcasting applications, this vulnerability could affect a broad range of software and services that incorporate FFmpeg 6.1.1 or similar versions. However, the lack of remote exploitability and the absence of known exploits reduce immediate risk. The vulnerability remains a concern for organizations processing untrusted media content, as crafted files could trigger crashes or instability.

The primary impact of CVE-2024-36613 is denial-of-service, which can disrupt media processing workflows, streaming services, or any application relying on FFmpeg for multimedia handling. This can lead to service outages, degraded user experience, or operational interruptions. Although confidentiality and integrity are not directly affected, availability issues can have downstream effects on business continuity and service reliability. Organizations that ingest or transcode large volumes of media, such as broadcasters, content delivery networks, and cloud service providers, may face increased risk if attackers supply malicious media files. The vulnerability could also be leveraged as part of a broader attack chain to cause instability or distract defenders. Since exploitation requires local access to supply malicious input, environments where users can upload or process untrusted media files are particularly vulnerable. The absence of known exploits and the medium severity rating suggest the threat is moderate but warrants proactive mitigation to prevent future exploitation.

To mitigate CVE-2024-36613, organizations should monitor for and apply official FFmpeg patches or updates that address the integer overflow in the DXA demuxer as soon as they become available. In the interim, restrict or sanitize media inputs to FFmpeg, especially from untrusted or external sources, to reduce the risk of processing malicious files. Implement sandboxing or containerization for media processing components to limit the impact of potential crashes or undefined behavior. Employ input validation and filtering mechanisms to detect and block malformed or suspicious media files before they reach FFmpeg. Additionally, maintain robust monitoring and logging around media processing services to detect abnormal crashes or service disruptions indicative of exploitation attempts. Where possible, upgrade to newer FFmpeg versions that have addressed this vulnerability or disable the DXA demuxer if it is not required for operational needs. Educate developers and system administrators about the risks of integer overflows and the importance of secure media handling practices.