Wazuh: Heap Buffer Overflow in DecodeWinevt() join_data Accumulation via Crafted EventChannel XML
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| wazuh | wazuh | affected |
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No data.
No data.
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| 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% (0.284% probability within 30 days)
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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. DecodeWinevt in src/analysisd/decoders/winevtchannel.c accumulates unnamed Windows EventChannel Data element contents into the fixed 65,535-byte join_data heap buffer but passes the growing content length, rather than the OS_MAXSTR buffer capacity, as the snprintf size. An enrolled agent can submit an EventChannel message containing four maximum-sized unnamed Data elements, causing the fourth accumulation to write beyond join_data and corrupt adjacent heap metadata. The subsequent free of join_data2 causes the wazuh-analysisd process to terminate, stopping log ingestion for all agents handled by that manager. This vulnerability is fixed in 4.14.7. | |
| Title | Wazuh: Heap Buffer Overflow in DecodeWinevt() join_data Accumulation via Crafted EventChannel XML | |
| Weaknesses | CWE-122 | |
| References |
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| Metrics |
cvssV3_1
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