Wazuh agent enrollment NULL pointer dereference via malformed manager response
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| wazuh | wazuh | affected |
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No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Wazuh | Wazuh |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.197% probability within 30 days)
| Type | Values Removed | Values Added |
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| CPEs | cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:* |
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| Metrics |
ssvc
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| First Time appeared |
Wazuh
Wazuh wazuh |
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| Vendors & Products |
Wazuh
Wazuh wazuh |
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| Description | Wazuh is an open-source security platform providing unified XDR and SIEM protection for endpoints and cloud workloads. In versions 4.0.0 through 4.14.6, a malicious or man-in-the-middle enrollment manager can crash a Wazuh agent during enrollment by returning a malformed key response with fewer than four fields, causing a NULL pointer dereference. The w_enrollment_process_agent_key() routine splits the manager-provided key into four space-separated fields but does not verify that all fields are present before passing them to validators. Because OS_StrBreak() leaves missing trailing entries as NULL and OS_IsValidName() calls strlen() on its argument without a NULL check, a response such as OSSEC K:'1' reaches OS_IsValidName(NULL) and terminates the agent process. Since Wazuh permits enrollment against an unverified manager when no CA certificate is configured, an attacker operating a rogue manager or intercepting the enrollment flow can deterministically crash agents, resulting in denial of service. This issue is fixed in version 4.14.7. | |
| Title | Wazuh agent enrollment NULL pointer dereference via malformed manager response | |
| Weaknesses | CWE-476 | |
| References |
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| Metrics |
cvssV3_1
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