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Q1What is this vulnerability? (Essence + Consequences)
๐จ **Essence**: Wazuh suffers from **Unsafe Deserialization** of untrusted data. <br>๐ฅ **Consequences**: This flaw allows attackers to bypass safety checks, potentially leading to **Remote Code Execution (RCE)**.โฆ
๐ก๏ธ **Root Cause**: **CWE-502** (Deserialization of Untrusted Data). <br>๐ **Flaw**: The application processes data from untrusted sources without proper validation or sanitization before deserializing objects.
๐ **Attacker Capabilities**: With RCE, hackers can execute arbitrary commands. <br>๐ **Impact**: Full system compromise. They can steal data, modify configurations, and use the server as a pivot point.โฆ
๐ **Exploitation Threshold**: **Medium**. <br>๐ **Auth Requirement**: **PR:H** (Privileges Required: High). The attacker needs authentication/access to the Wazuh interface/API to trigger the deserialization.โฆ
๐ **Public Exploit**: **No confirmed PoC** in the provided data. <br>โ ๏ธ **Status**: While no direct exploit code is listed, the CVSS score is **9.8 (Critical)**.โฆ
๐ **Self-Check**: Verify your Wazuh manager version. <br>๐ **Scan**: Check if your version falls within **4.0.0 - 4.14.2**. <br>๐ ๏ธ **Tool**: Use Wazuh's own dashboard or API to query installed agent/manager versions.
Q8Is it fixed officially? (Patch/Mitigation)
๐ฉน **Official Fix**: Yes. <br>๐ **Reference**: See GitHub Security Advisory **GHSA-3gm7-962f-fxw5**. <br>โ **Action**: Upgrade to a patched version (likely 4.14.3 or later) immediately.
Q9What if no patch? (Workaround)
๐ง **No Patch Workaround**: <br>1๏ธโฃ **Restrict Access**: Limit network access to Wazuh API/Manager ports. <br>2๏ธโฃ **Auth Hardening**: Ensure strong authentication is enforced (since PR:H is required).โฆ
๐ฅ **Urgency**: **CRITICAL (P1)**. <br>โฑ๏ธ **Priority**: Patch immediately. <br>๐ **Risk**: CVSS 9.8 indicates near-maximum severity. Even with auth requirements, the impact of RCE is devastating. Do not delay.