{"schemaVersion":3,"id":"CVE-2023-42119","aliases":["UBUNTU-CVE-2023-42119","DEBIAN-CVE-2023-42119"],"status":"published","duplicateOf":null,"title":null,"description":"Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Exim. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the smtp service, which listens on TCP port 25 by default. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the service account.\n. Was ZDI-CAN-17643.","dates":{"published":"2024-05-03T02:13:26.751Z","modified":"2025-11-03T21:49:33.830Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":3.1,"severity":"low","version":"3.0","versionLabel":"v3.0","source":"CVE.org","vector":"CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":3.1,"severity":"low","vector":"CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Ubuntu","score":3.1,"severity":"low","vector":"CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":4.1,"impact":2.3,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Debian","score":3.1,"severity":"low","vector":"CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":4.1,"impact":2.3,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":3.1,"severity":"low","vector":"CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01609,"percentile":0.75703,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.0029999999999998778,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.01606},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01716,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01782,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01782,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01782,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01782,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01659,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01609,"percentile":0.75703}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01606,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01716,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01782,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01782,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01782,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01782,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01659,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01609,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01609,"percentile":0.75703}]},"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":[],"exploitCount":0,"weaknesses":[{"id":"CWE-125","name":"Out-of-bounds Read","description":"The product reads data past the end, or before the beginning, of the intended buffer.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/125.html"}],"affected":[{"vendor":"debian","product":"exim4","name":"exim4","label":"exim4","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/exim4","purlType":"deb","versions":[{"text":"< 4.96-15+deb12u3","noFixRecorded":false,"fixedIn":null},{"text":"< 4.97~RC2-2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.96-15+deb12u3 | < 4.97~RC2-2","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"exim4","name":"exim4","label":"exim4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/exim4","purlType":"deb","versions":[{"text":"< 4.82-3ubuntu2.4+esm7","noFixRecorded":false,"fixedIn":null},{"text":"< 4.86.2-2ubuntu2.6+esm5","noFixRecorded":false,"fixedIn":null},{"text":"< 4.90.1-1ubuntu1.10+esm2","noFixRecorded":false,"fixedIn":null},{"text":"< 4.93-13ubuntu1.9","noFixRecorded":false,"fixedIn":null},{"text":"< 4.95-4ubuntu2.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.82-3ubuntu2.4+esm7 | < 4.86.2-2ubuntu2.6+esm5 | < 4.90.1-1ubuntu1.10+esm2 | < 4.93-13ubuntu1.9 | < 4.95-4ubuntu2.4","eol":null,"hubHref":null},{"vendor":"exim","product":"exim","name":"Exim","label":"exim","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"exim 4.96-RC0-14-24b8ed847-XX","noFixRecorded":false,"fixedIn":null},{"text":"< 4.96.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"exim 4.96-RC0-14-24b8ed847-XX | < 4.96.2","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"exim","label":"Exim","category":"server-app"}},"hubHref":"/vendor/exim/exim"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-23-1473/","label":"www.zerodayinitiative.com/advisories/ZDI-23-1473/","hostname":"www.zerodayinitiative.com","tags":["X Research Advisory","REPORT","Third Party Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/10/msg00029.html","label":"lists.debian.org/debian-lts-announce/2024/10/msg00029.html","hostname":"lists.debian.org","tags":[]},{"url":"https://ubuntu.com/security/CVE-2023-42119","label":"ubuntu.com/security/CVE-2023-42119","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://exim.org/static/doc/security/CVE-2023-zdi.txt","label":"exim.org/static/doc/security/CVE-2023-zdi.txt","hostname":"exim.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-6455-1","label":"ubuntu.com/security/notices/USN-6455-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-42119","label":"www.cve.org/CVERecord?id=CVE-2023-42119","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-42119","label":"security-tracker.debian.org/tracker/CVE-2023-42119","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["DLA-3938-1","OPENSUSE-SU-2023:0303-1","OPENSUSE-SU-2023:0304-1","OPENSUSE-SU-2024:0007-1","OPENSUSE-SU-2024:13333-1","USN-6455-1"],"duplicates":[],"related":["OPENSUSE-SU-2023:0303-1","OPENSUSE-SU-2023:0304-1","OPENSUSE-SU-2024:0007-1","OPENSUSE-SU-2024:13333-1","USN-6455-1"]},"timeline":[{"kind":"published","date":"2024-05-03T02:13:26.751Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-11-03T21:49:33.830Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":13,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T18:25:42.043Z","stale":false,"partial":false}}