CVE-2023-5377
📋 TL;DR
This vulnerability is an out-of-bounds read in the GPAC multimedia framework that could allow attackers to read sensitive memory contents. It affects users of GPAC versions prior to v2.2.2-DEV who process untrusted media files. The vulnerability could lead to information disclosure or potentially enable further exploitation.
💻 Affected Systems
- GPAC Multimedia Framework
📦 What is this software?
Gpac by Gpac
⚠️ Risk & Real-World Impact
Worst Case
Information disclosure leading to sensitive data exposure, potential memory corruption enabling arbitrary code execution, or denial of service.
Likely Case
Application crash or denial of service when processing malicious media files, with possible information disclosure of adjacent memory contents.
If Mitigated
Minimal impact if proper input validation and memory protections are in place, potentially just application instability.
🎯 Exploit Status
Exploitation requires crafting a malicious media file. No public exploit code has been identified at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v2.2.2-DEV and later
Vendor Advisory: https://github.com/gpac/gpac/commit/8e9d6b38c036a97020c462ad48e1132e0ddc57ce
Restart Required: Yes
Instructions:
1. Update GPAC to version v2.2.2-DEV or later. 2. Recompile any applications using GPAC libraries. 3. Restart affected services.
🔧 Temporary Workarounds
Input Validation
allImplement strict input validation for media files before processing with GPAC
Memory Protection
linuxEnable ASLR and DEP/PaX to reduce impact of memory corruption
echo 2 > /proc/sys/kernel/randomize_va_space
sysctl -w kernel.exec-shield=1
🧯 If You Can't Patch
- Isolate GPAC processing to dedicated, restricted environments
- Implement network segmentation and strict access controls for media processing services
🔍 How to Verify
Check if Vulnerable:
Check GPAC version with 'gpac -version' or examine installed package versionCheck Version:
gpac -version 2>/dev/null | head -1Verify Fix Applied:
Verify version is v2.2.2-DEV or later and test with known safe media files📡 Detection & Monitoring
Log Indicators:
- GPAC segmentation faults
- Abnormal memory access errors in application logs
- Unexpected process termination
Network Indicators:
- Unusual media file uploads to processing services
- Multiple failed processing attempts
SIEM Query:
source="*gpac*" AND ("segmentation fault" OR "SIGSEGV" OR "memory violation")