{"schemaVersion":3,"id":"CVE-2023-45239","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A lack of input validation exists in tac_plus prior to commit 4fdf178 which, when pre or post auth commands are enabled, allows an attacker who can control the username, rem-addr, or NAC address sent to tac_plus to inject shell commands and gain remote code execution on the tac_plus server.","dates":{"published":"2023-10-06T17:16:16.797Z","modified":"2025-02-13T17:13:58.340Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0224,"percentile":0.82594,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.42699999999999994,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.01813},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0224,"percentile":0.82594}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01813,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01876,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0224,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0224,"percentile":0.82594}]},"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":"GITHUB_FACEBOOK_TAC_PLUS","name":"Tac Plus","source":"github","url":"https://github.com/facebook/tac_plus/pull/41","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-790","name":"Improper Filtering of Special Elements","description":"The product receives data from an upstream component, but does not filter or incorrectly filters special elements before sending it to a downstream component.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/790.html"}],"affected":[{"vendor":"facebook","product":"tac_plus","name":"tac plus","label":"tac_plus","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 2023-10-05","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2023-10-05","eol":null,"hubHref":"/vendor/facebook/tac_plus"},{"vendor":"fedoraproject","product":"fedora","name":"fedora","label":"fedora","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"39","noFixRecorded":false,"fixedIn":null}],"versionsText":"39","eol":{"isEol":true,"eolDate":"2024-11-26T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"39","label":"39","eolFrom":"2024-11-26T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":null},"product":{"name":"fedora","label":"Fedora Linux","category":"os"}},"hubHref":"/vendor/fedoraproject/fedora"},{"vendor":"meta","product":"tac_plus","name":"tac_plus","label":"tac_plus","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 4fdf178","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4fdf178","eol":null,"hubHref":"/vendor/meta/tac_plus"}],"affectedCount":3,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://github.com/facebook/tac_plus/pull/41","label":"github.com/facebook/tac_plus/pull/41","hostname":"github.com","tags":["X Refsource MISC","Exploit","Patch"]},{"url":"https://github.com/facebook/tac_plus/security/advisories/GHSA-p334-5r3g-4vx3","label":"github.com/facebook/tac_plus/security/advisories/GHSA-p334-5r3g-4vx3","hostname":"github.com","tags":["X Refsource CONFIRM","Vendor Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X4J7ZYMFZB4G4OU5EDJPQLP6F6RKDGIH/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["Mailing List","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2023-10-06T17:16:16.797Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-02-13T17:13:58.340Z","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":"2026-10-20T18:48:28.864Z","stale":false,"partial":false}}