CVE-2023-49275: Wazuh vulnerable to NULL Pointer Dereference in wazuh-analysisd
First published: Fri Apr 19 2024(Updated: )
Wazuh is a free and open source platform used for threat prevention, detection, and response. A NULL pointer dereference was detected during fuzzing of the analysis engine, allowing malicious clients to DoS the analysis engine. The bug occurs when `analysisd` receives a syscollector message with the `hotfix` `msg_type` but lacking a `timestamp`. It uses `cJSON_GetObjectItem()` to get the `timestamp` object item and dereferences it without checking for a `NULL` value. A malicious client can DoS the analysis engine. This vulnerability is fixed in 4.7.1.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Wazuh | >=3.2.0<4.7.1 |
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Reference Links
- https://github.com/wazuh/wazuh/security/advisories/GHSA-4mq7-w9r6-9975
- https://github.com/wazuh/wazuh/blob/e1d5231b31b68a75f3b8b33f833155b362411078/src/analysisd/decoders/syscollector.c#L1573
- https://github.com/wazuh/wazuh/blob/e1d5231b31b68a75f3b8b33f833155b362411078/src/analysisd/decoders/syscollector.c#L1578
Frequently Asked Questions
What is the severity of CVE-2023-49275?
CVE-2023-49275 has a severity rating that may lead to denial of service (DoS) in Wazuh's analysis engine.
How do I fix CVE-2023-49275?
To address CVE-2023-49275, upgrade Wazuh to a version newer than 4.7.1.
What products are affected by CVE-2023-49275?
CVE-2023-49275 affects Wazuh versions from 3.2.0 to 4.7.1.
What type of attack does CVE-2023-49275 enable?
CVE-2023-49275 allows attackers to perform denial of service attacks against the Wazuh analysis engine.
What is a NULL pointer dereference in the context of CVE-2023-49275?
In the context of CVE-2023-49275, a NULL pointer dereference occurs when the analysis engine attempts to access memory that has not been allocated, leading to a crash.
- agent/weakness
- agent/references
- agent/type
- agent/first-publish-date
- agent/description
- agent/severity
- agent/author
- agent/event
- agent/title
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/wazuh
- canonical/wazuh
- version/wazuh/3.2.0