CVE-2023-2838
📋 TL;DR
This vulnerability is an out-of-bounds read in the GPAC multimedia framework that could allow attackers to read sensitive memory contents or cause denial of service. It affects systems running GPAC versions prior to 2.2.2, particularly those processing untrusted media files. Users and applications that utilize GPAC for media playback or processing are at risk.
💻 Affected Systems
- GPAC (GPAC Project on Advanced Content)
📦 What is this software?
Gpac by Gpac
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise if combined with other vulnerabilities, or sensitive information disclosure from memory.
Likely Case
Application crash causing denial of service, or limited information disclosure from adjacent memory.
If Mitigated
Application crash with no data loss if proper sandboxing and memory protections are enabled.
🎯 Exploit Status
Exploitation requires processing a specially crafted media file. The vulnerability is in the core parsing logic.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2.2
Vendor Advisory: https://github.com/gpac/gpac/commit/c88df2e202efad214c25b4e586f243b2038779ba
Restart Required: Yes
Instructions:
1. Download GPAC 2.2.2 or later from the official repository. 2. Compile and install following the build instructions. 3. Restart any services or applications using GPAC.
🔧 Temporary Workarounds
Disable vulnerable parsers
allDisable or restrict access to media file parsing functionality in GPAC if not required.
Input validation
allImplement strict input validation for media files before processing with GPAC.
🧯 If You Can't Patch
- Implement network segmentation to isolate systems running vulnerable GPAC versions.
- Deploy application allowlisting to prevent execution of untrusted media files.
🔍 How to Verify
Check if Vulnerable:
Check GPAC version with 'MP4Box -version' or examine installed package version.Check Version:
MP4Box -versionVerify Fix Applied:
Verify version is 2.2.2 or later using 'MP4Box -version' command.📡 Detection & Monitoring
Log Indicators:
- Application crashes in GPAC-related processes
- Memory access violation errors in system logs
Network Indicators:
- Unusual media file transfers to systems running GPAC
SIEM Query:
Process:Name='MP4Box' AND EventID=1000 (Application Crash)🔗 References
- https://github.com/gpac/gpac/commit/c88df2e202efad214c25b4e586f243b2038779ba
- https://huntr.dev/bounties/711e0988-5345-4c01-a2fe-1179604dd07f
- https://www.debian.org/security/2023/dsa-5411
- https://github.com/gpac/gpac/commit/c88df2e202efad214c25b4e586f243b2038779ba
- https://huntr.dev/bounties/711e0988-5345-4c01-a2fe-1179604dd07f
- https://www.debian.org/security/2023/dsa-5411
