CVE-2025-70310 Overview
A heap overflow vulnerability exists in the vorbis_to_intern() function of GPAC v2.4.0, a popular open-source multimedia framework used for creating, packaging, and streaming rich media content. This vulnerability allows attackers to cause a Denial of Service (DoS) condition by supplying a specially crafted .ogg file that triggers memory corruption during Vorbis audio decoding.
Critical Impact
Attackers can crash GPAC-based applications by providing malicious Ogg Vorbis audio files, potentially disrupting multimedia processing workflows and streaming services.
Affected Products
- GPAC v2.4.0
- Applications and services utilizing GPAC's Vorbis audio decoding functionality
- Multimedia processing pipelines that handle untrusted .ogg files
Discovery Timeline
- 2026-01-15 - CVE CVE-2025-70310 published to NVD
- 2026-01-16 - Last updated in NVD database
Technical Details for CVE-2025-70310
Vulnerability Analysis
This vulnerability is classified as CWE-122 (Heap-based Buffer Overflow), occurring within the Vorbis audio decoder component of GPAC. The vorbis_to_intern() function fails to properly validate input boundaries when processing Ogg Vorbis audio streams, allowing heap memory to be corrupted when parsing malformed audio data.
The attack requires local access with user interaction—specifically, a victim must open or process a maliciously crafted .ogg file. While the vulnerability does not allow for data exfiltration or integrity compromise, it can reliably crash the affected application, resulting in complete loss of availability for the multimedia processing service.
Root Cause
The root cause lies in insufficient bounds checking within the vorbis_to_intern() function when converting Vorbis audio data to GPAC's internal format. When processing specially crafted Ogg Vorbis streams, the function writes beyond the allocated heap buffer boundaries. This occurs because the decoder trusts certain size or length fields within the Ogg container without adequate validation, leading to heap memory corruption.
Attack Vector
The attack vector requires local access with user interaction. An attacker must convince a user to open a malicious .ogg file using an application built with the vulnerable GPAC library. This could occur through:
- Email attachments containing malicious audio files
- Web downloads of compromised multimedia content
- Processing untrusted media files in automated pipelines
- Embedding malicious Ogg streams in multimedia containers
When the vulnerable vorbis_to_intern() function processes the crafted audio data, the heap overflow occurs, causing the application to crash. Technical details and proof-of-concept information can be found in the GitHub PoC Repository.
Detection Methods for CVE-2025-70310
Indicators of Compromise
- Application crashes when processing .ogg audio files
- Segmentation faults or memory access violations in GPAC-based applications
- Unusual crash logs referencing the vorbis_to_intern() function or Vorbis decoder
- Repeated DoS conditions when processing multimedia content from untrusted sources
Detection Strategies
- Monitor for abnormal application terminations in multimedia processing services utilizing GPAC
- Implement file integrity checks and sandboxed processing for untrusted .ogg files
- Deploy memory corruption detection tools (AddressSanitizer, Valgrind) in development and testing environments
- Configure crash dump analysis to identify patterns consistent with heap overflow exploitation
Monitoring Recommendations
- Enable application crash monitoring for services using GPAC multimedia components
- Log and alert on repeated failures when processing Ogg Vorbis audio content
- Monitor system logs for segmentation faults in multimedia processing workflows
- Implement rate limiting for media file processing from untrusted sources
How to Mitigate CVE-2025-70310
Immediate Actions Required
- Audit systems to identify deployments of GPAC v2.4.0
- Restrict processing of .ogg files from untrusted sources until a patch is applied
- Implement sandboxing for multimedia processing workflows handling external content
- Monitor GPAC project releases for security updates addressing this vulnerability
Patch Information
No official patch information is available in the CVE data at this time. Organizations should monitor the GPAC project for security updates and upgrade to a patched version when available. The GitHub PoC Repository provides additional technical context for the vulnerability.
Workarounds
- Disable Vorbis audio decoding in GPAC if not required for your use case
- Process Ogg Vorbis files only from trusted, verified sources
- Implement input validation and file format verification before passing files to GPAC
- Run GPAC-based applications in isolated containers or sandboxed environments to limit crash impact
# Example: Restrict .ogg file processing permissions
# Create dedicated user for GPAC processing with limited privileges
useradd -r -s /sbin/nologin gpac-processor
# Limit resources to contain DoS impact
ulimit -v 1048576 # Limit virtual memory to 1GB
ulimit -t 60 # Limit CPU time to 60 seconds
# Run GPAC in sandboxed environment
firejail --profile=multimedia gpac -i untrusted_file.ogg
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
