Overview
CVE-2025-65407 describes a use-after-free vulnerability found in the Live555 Streaming Media library, specifically version 2018.09.02. This flaw exists within the MPEG1or2Demux::newElementaryStream() function. Successful exploitation of this vulnerability allows attackers to trigger a Denial of Service (DoS) condition by providing a specially crafted MPEG Program stream.
Technical Details
The use-after-free vulnerability occurs when the MPEG1or2Demux::newElementaryStream() function attempts to access memory that has already been freed. This typically happens due to incorrect memory management within the demultiplexing process. A malicious actor can craft an MPEG Program stream that triggers the premature freeing of memory used by newElementaryStream(). Subsequent attempts to access this freed memory result in a crash or unpredictable behavior, leading to a Denial of Service.
CVSS Analysis
Currently, the CVSS score for CVE-2025-65407 is listed as N/A. This indicates that a formal CVSS score has not yet been assigned. However, given that exploitation results in a Denial of Service, it is likely to receive a moderate to high severity score once evaluated.
Possible Impact
The exploitation of CVE-2025-65407 can have significant consequences for systems utilizing the vulnerable Live555 library. The most immediate impact is a Denial of Service (DoS), rendering streaming services unavailable. This can lead to:
- Service disruption for applications relying on Live555 for media streaming.
- Potential data loss if the crash occurs during data processing.
- Negative user experience and reputational damage.
Mitigation and Patch Steps
Currently, the most effective mitigation strategy is to update to a patched version of Live555 Streaming Media that addresses this vulnerability. As version 2018.09.02 is affected, users should seek newer, maintained versions of the library or apply provided patches, if available. Here are some potential steps:
- Upgrade Live555: The primary solution is to upgrade to the latest stable release of Live555 Streaming Media from the official source or trusted distribution channels.
- Apply Patches: Check for and apply any security patches released by the Live555 developers specifically addressing CVE-2025-65407.
- Input Validation: Implement robust input validation on any MPEG Program streams being processed to detect and reject malformed or malicious streams before they reach the vulnerable function.
- Network Segmentation: Isolate systems running Live555 behind firewalls and network segmentation to limit the potential impact of a successful attack.
