CVE-2024-57823 — AI Deep Analysis Summary

Q: What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Integer underflow in URI normalization within the Turtle parser. 💥 **Consequences**: Full system compromise. CVSS Score is **High** (C:H, I:H, A:H).

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-191** (Integer Underflow). Occurs when normalizing URIs during parsing. 📉 Logic error in handling numeric values.

Q: Who is affected? (Versions/Components)

📦 **Affected**: **Raptor RDF Syntax Library**. 📅 **Versions**: 2.0.16 and earlier. 🏷️ Vendor: librdf (Dave Beckett).

Q: What can hackers do? (Privileges/Data)

🕵️ **Attacker Action**: Local execution. 📈 **Impact**: Complete loss of Confidentiality, Integrity, and Availability. 🏴☠️ High severity impact.

Q: Is exploitation threshold high? (Auth/Config)

🔓 **Threshold**: **Low**. 📍 **Vector**: Local (AV:L). 🔑 **Privs**: None required (PR:N). 👁️ **UI**: None required (UI:N). Easy to trigger locally.

Q: Is there a public Exp? (PoC/Wild Exploitation)

🧪 **Exploit Status**: PoCs exist. 🔗 Links: GitHub issues, Pedrib PoC, Debian Bug. 🌐 **Wild Exploit**: Not confirmed, but PoCs are public.

Q: How to self-check? (Features/Scanning)

🔍 **Check**: Scan for **Raptor RDF Syntax Library** v2.0.16-. 📋 **Feature**: Look for Turtle parser usage. 🛠️ Use fuzzing tools to test URI normalization.

Q: Is it fixed officially? (Patch/Mitigation)

🩹 **Fix**: Update to version **> 2.0.16**. 📢 Official patch available via librdf/Raptor updates. 🔄 Apply immediately.

Q: What if no patch? (Workaround)

🚧 **No Patch?**: Isolate the service. 🚫 Disable Turtle parsing if possible. 🛡️ Implement strict input validation for URIs. 🧱 Use WAF rules to block malicious payloads.

Q: Is it urgent? (Priority Suggestion)

⚡ **Urgency**: **High**. 🚨 CVSS is High. 📉 Local privilege escalation potential. 🏃 **Action**: Patch ASAP. Do not ignore.

Updated May 08, 2026 CVSS 9.3 · Critical

This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis →

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Integer underflow in URI normalization within the Turtle parser. 💥 **Consequences**: Full system compromise. CVSS Score is **High** (C:H, I:H, A:H).

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-191** (Integer Underflow). Occurs when normalizing URIs during parsing. 📉 Logic error in handling numeric values.

Q3Who is affected? (Versions/Components)

📦 **Affected**: **Raptor RDF Syntax Library**. 📅 **Versions**: 2.0.16 and earlier. 🏷️ Vendor: librdf (Dave Beckett).

Q4What can hackers do? (Privileges/Data)

🕵️ **Attacker Action**: Local execution. 📈 **Impact**: Complete loss of Confidentiality, Integrity, and Availability. 🏴‍☠️ High severity impact.

Q5Is exploitation threshold high? (Auth/Config)

🔓 **Threshold**: **Low**. 📍 **Vector**: Local (AV:L). 🔑 **Privs**: None required (PR:N). 👁️ **UI**: None required (UI:N). Easy to trigger locally.

Q6Is there a public Exp? (PoC/Wild Exploitation)

🧪 **Exploit Status**: PoCs exist. 🔗 Links: GitHub issues, Pedrib PoC, Debian Bug. 🌐 **Wild Exploit**: Not confirmed, but PoCs are public.

Q7How to self-check? (Features/Scanning)

🔍 **Check**: Scan for **Raptor RDF Syntax Library** v2.0.16-. 📋 **Feature**: Look for Turtle parser usage. 🛠️ Use fuzzing tools to test URI normalization.

Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Fix**: Update to version **> 2.0.16**. 📢 Official patch available via librdf/Raptor updates. 🔄 Apply immediately.

Q9What if no patch? (Workaround)

🚧 **No Patch?**: Isolate the service. 🚫 Disable Turtle parsing if possible. 🛡️ Implement strict input validation for URIs. 🧱 Use WAF rules to block malicious payloads.

Q10Is it urgent? (Priority Suggestion)

⚡ **Urgency**: **High**. 🚨 CVSS is High. 📉 Local privilege escalation potential. 🏃 **Action**: Patch ASAP. Do not ignore.

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Vulnerability detail Full AI analysis (login) librdf CWE-191