{"id":"CVE-2023-7340","state":"PUBLISHED","title":"Wazuh authd service (os_auth) Heap-based Buffer Overflow","description":"Wazuh authd contains a heap-buffer overflow vulnerability that allows attackers to cause memory corruption and malformed heap data by sending specially crafted input. Attackers can exploit this vulnerability to trigger a denial of service condition, resulting in low availability impact to the authentication daemon.","publishedAt":"2026-03-27T15:52:47.751Z","updatedAt":"2026-07-15T01:25:00.470Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Wazuh Wazuh"],"affected":[{"vendor":"Wazuh","product":"Wazuh","packageName":"os_auth","defaultStatus":"unaffected","versions":[{"version":"3.5.0","status":"affected","lessThanOrEqual":"4.3.10","versionType":"semver"}],"platforms":["Linux"]}],"references":["https://github.com/wazuh/wazuh/security/advisories/GHSA-grjq-p5fg-m24r","https://www.vulncheck.com/advisories/heap-buffer-overflow-in-wazuh-authd"],"weaknesses":["CWE-125"],"ingestedAt":"2026-10-29T20:06:42.242Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/7xxx/CVE-2023-7340.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-7340","state":"PUBLISHED","datePublished":"2026-03-27T15:52:47.751Z","dateUpdated":"2026-07-15T01:25:00.470Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-03-27T15:51:18.381Z"},"containers":{"cna":{"title":"Wazuh authd service (os_auth) Heap-based Buffer Overflow","descriptions":[{"lang":"en","value":"Wazuh authd contains a heap-buffer overflow vulnerability that allows attackers to cause memory corruption and malformed heap data by sending specially crafted input. Attackers can exploit this vulnerability to trigger a denial of service condition, resulting in low availability impact to the authentication daemon."}],"affected":[{"vendor":"Wazuh","product":"Wazuh","packageName":"os_auth","defaultStatus":"unaffected","versions":[{"version":"3.5.0","status":"affected","lessThanOrEqual":"4.3.10","versionType":"semver"}],"platforms":["Linux"]}],"references":[{"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-grjq-p5fg-m24r","tags":["vendor-advisory"]},{"url":"https://www.vulncheck.com/advisories/heap-buffer-overflow-in-wazuh-authd","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"NONE","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":5.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW","version":"3.1","baseSeverity":"LOW","baseScore":3.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","lang":"en","description":"CWE-125: Out-of-bounds Read","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-07-15T01:25:00.470Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5.0","versionEndIncluding":"4.3.10"}]}]}],"impacts":[{"descriptions":[{"lang":"en","value":"A heap-buffer overflow in wazuh-authd may cause memory corruption and malformed heap data, resulting in low availability impact."}]}],"source":{"discovery":"EXTERNAL"},"credits":[{"lang":"en","value":"Reported by @vikman90; credited to @stasos24.","type":"finder"}],"x_generator":{"engine":"vulncheck"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-27T16:55:39.979053Z","id":"CVE-2023-7340","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-27T16:56:03.545Z"}}]}}}