CVE-2023-49275: Wazuh vulnerable to NULL Pointer Dereference in wazuh-analysisd
Vulnerability summary
CVE-2023-49275 is a medium (CVSS 6.5) NULL Pointer Dereference vulnerability in wazuh. EPSS estimates a 0.88% chance of exploitation in the next 30 days, higher than 58.7% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 19-04-2024PublishedVulnerability first disclosed.
- 02-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.88%
Chance of exploitation in the next 30 days
Percentile
59%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.88% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundWazuh
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Wazuh1 product
- wazuh≥ 3.2.0, < 4.7.1
1 vendor · 1 product
References
3 links- github.com/wazuh/wazuh/security/advisories/GHSA-4mq7-w9r6-9975X Refsource CONFIRMExploitVendor Advisory