CVE-2025-3407
📋 TL;DR
This critical vulnerability in the stb library allows remote attackers to trigger an out-of-bounds read via manipulated h_count/v_count parameters in the stbhw_build_tileset_from_image function. This could lead to information disclosure or application crashes. Any software using affected versions of the stb library is potentially vulnerable.
💻 Affected Systems
- Nothings stb library
📦 What is this software?
Stb Image.h by Nothings
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, though out-of-bounds read typically results in information disclosure or denial of service.
Likely Case
Application crash (denial of service) or information leakage from memory, potentially exposing sensitive data.
If Mitigated
Limited impact with proper memory protections and sandboxing, possibly just application termination.
🎯 Exploit Status
Remote exploitation is possible but requires specific conditions to trigger the vulnerable function with manipulated parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
1. Monitor stb repository for updates
2. Update to a version after commit f056911 when available
3. Rebuild any software using the stb library
🔧 Temporary Workarounds
Input validation wrapper
allAdd parameter validation before calling stbhw_build_tileset_from_image
// In code using stb: validate h_count and v_count parameters before function call
🧯 If You Can't Patch
- Implement network segmentation to limit exposure of affected systems
- Use application sandboxing or containerization to limit impact scope
🔍 How to Verify
Check if Vulnerable:
Check if your software uses stb library and examine the commit hash or versionCheck Version:
Check build configuration or dependency files for stb version informationVerify Fix Applied:
Verify stb library version is newer than commit f056911📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory access violations
- Unexpected termination of processes using stb
Network Indicators:
- Unusual requests to applications using stb library
SIEM Query:
Process termination events for applications known to use stb library