{"schemaVersion":3,"id":"CVE-2018-3877","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An exploitable buffer overflow vulnerability exists in the credentials handler of video-core's HTTP server of Samsung SmartThings Hub STH-ETH-250-Firmware version 0.20.17. The strncpy overflows the destination buffer, which has a size of 160 bytes. An attacker can send an arbitrarily long \"directory\" value in order to exploit this vulnerability.","dates":{"published":"2018-09-21T14:00:00.000Z","modified":"2024-09-16T17:08:09.156Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.9,"severity":"critical","version":"3.0","versionLabel":"v3.0","source":"CVE.org","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":9.9,"severity":"critical","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.9,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":9.9,"severity":"critical","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":9,"severity":"high","vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01804,"percentile":0.78199,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-18T00:00:00.000Z","baselineScore":0.01804},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01804,"percentile":0.78199}],"last30":[{"date":"2026-09-18T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01804,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01804,"percentile":0.78199}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"REF_7796BAEC58FF3BDF","name":"Exploit Reference (talosintelligence.com)","source":"reference","url":"https://talosintelligence.com/vulnerability_reports/TALOS-2018-0555","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer","description":"The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/119.html"}],"affected":[{"vendor":"samsung","product":"smartthings hub sth-eth-250","name":"SmartThings Hub STH-ETH-250","label":"smartthings hub sth-eth-250","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"Firmware version 0.20.17","noFixRecorded":false,"fixedIn":null}],"versionsText":"Firmware version 0.20.17","eol":null,"hubHref":"/vendor/samsung/smartthings_hub_sth-eth-250"},{"vendor":"samsung","product":"sth-eth-250_firmware","name":"sth-eth-250 firmware","label":"sth-eth-250_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"0.20.17","noFixRecorded":false,"fixedIn":null}],"versionsText":"0.20.17","eol":null,"hubHref":"/vendor/samsung/sth-eth-250"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2018-0555","label":"talosintelligence.com/vulnerability_reports/TALOS-2018-0555","hostname":"talosintelligence.com","tags":["X Refsource MISC","Exploit","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2018-09-21T14:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-16T17:08:09.156Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T11:54:34.361Z","stale":false,"partial":false}}