{"id":"CVE-2023-4494","state":"PUBLISHED","title":"Easy Chat Server Stack-based buffer overflow vulnerability","description":"Stack-based buffer overflow vulnerability in Easy Chat Server 3.1 version. An attacker could send an excessively long username string to the register.ghp file asking for the name via a GET request resulting in arbitrary code execution on the remote machine.","publishedAt":"2023-10-04T12:27:04.981Z","updatedAt":"2024-09-05T18:09:39.518Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"INCIBE"},"assigner":"INCIBE","products":["EFS Software Easy Chat Server"],"affected":[{"vendor":"EFS Software","product":"Easy Chat Server","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.1","versionType":"custom"}]}],"references":["https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-efs-software-products"],"weaknesses":["CWE-119"],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/4xxx/CVE-2023-4494.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-4494","state":"PUBLISHED","datePublished":"2023-10-04T12:27:04.981Z","dateUpdated":"2024-09-05T18:09:39.518Z","assignerShortName":"INCIBE","assignerOrgId":"0cbda920-cd7f-484a-8e76-bf7f4b7f4516","dateReserved":"2023-08-23T09:39:39.085Z"},"containers":{"cna":{"title":"Easy Chat Server Stack-based buffer overflow vulnerability","descriptions":[{"lang":"en","value":"Stack-based buffer overflow vulnerability in Easy Chat Server 3.1 version. An attacker could send an excessively long username string to the register.ghp file asking for the name via a GET request resulting in arbitrary code execution on the remote machine."}],"affected":[{"vendor":"EFS Software","product":"Easy Chat Server","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.1","versionType":"custom"}]}],"references":[{"url":"https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-efs-software-products"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-119","description":"CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"INCIBE","orgId":"0cbda920-cd7f-484a-8e76-bf7f4b7f4516","dateUpdated":"2023-10-04T12:27:04.981Z"},"credits":[{"lang":"en","type":"finder","user":"00000000-0000-4000-9000-000000000000","value":"Rafael Pedrero"}],"datePublic":"2023-08-23T10:00:00.000Z","source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-efs-software-products","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T07:31:05.896Z"}},{"title":"CISA ADP Vulnrichment","affected":[{"vendor":"efs_software","product":"easy_chat_server","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.1","versionType":"custom"}],"cpes":["cpe:2.3:a:efs_software:easy_chat_server:*:*:*:*:*:*:*:*"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-09-05T17:59:30.381784Z","id":"CVE-2023-4494","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-05T18:09:39.518Z"}}]}}}