🛡️ Sentinel: Fix Content Spoofing Vulnerability#24
🛡️ Sentinel: Fix Content Spoofing Vulnerability#24google-labs-jules[bot] wants to merge 1 commit intomainfrom
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…ofing This change removes the fallback mechanism in `FindMatchingUrlIndex` (in both `ImageLoader.cs` and `VideoURLProvider.cs`) that would cyclically assign unknown URLs from external lists to existing `VRCUrl` slots. This behavior violated the "Fail Closed" principle and allowed external configurations to spoof captions for unrelated pre-approved images. Fixes a Critical security vulnerability where malicious actors could mislead users by associating trusted images with arbitrary, misleading captions.
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🛡️ Sentinel: [CRITICAL] Fix Content Spoofing via Fallback Logic
🚨 Severity: CRITICAL
💡 Vulnerability:
FindMatchingUrlIndexcontained a fallback mechanism that blindly mapped unknown URLs from external lists to existingVRCUrlslots. This allowed external configuration files to apply arbitrary captions to pre-approved images, enabling Phishing or Misinformation attacks.🎯 Impact: An attacker controlling the external list could make the world display trusted images (e.g., "Official Rules") with malicious captions (e.g., "Go to evil.com for free credits"), leveraging the user's trust in the visual content.
🔧 Fix: Removed the cyclical fallback logic. The system now enforces exact string matching for all URLs. If a URL in the external list is not present in the pre-approved
predefinedUrlslist, it is ignored (Fail Closed).✅ Verification: Verified with
reproduce_spoofing.pywhich confirmed that unknown URLs now result in a lookup failure (-1) instead of being mapped to index 0.Journal entry added to
.jules/sentinel.md.PR created automatically by Jules for task 10554152399007925495 started by @AEmotionStudio