{"schemaVersion":3,"id":"CVE-2018-9860","aliases":["ALPINE-CVE-2018-9860","UBUNTU-CVE-2018-9860","DEBIAN-CVE-2018-9860"],"status":"published","duplicateOf":null,"title":null,"description":"An issue was discovered in Botan 1.11.32 through 2.x before 2.6.0. An off-by-one error when processing malformed TLS-CBC ciphertext could cause the receiving side to include in the HMAC computation exactly 64K bytes of data following the record buffer, aka an over-read. The MAC comparison will subsequently fail and the connection will be closed. This could be used for denial of service. No information leak occurs.","dates":{"published":"2018-04-12T05:00:00.000Z","modified":"2024-08-05T07:24:56.311Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.0","versionLabel":"v3.0","source":"NVD","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Alpine","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Ubuntu","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Debian","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true}]},"epss":{"probability":0.01356,"percentile":0.71395,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.03599999999999992,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.0132},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01382,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01382,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01382,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01382,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01382,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01382,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01382,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0132,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01356,"percentile":0.71395}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.0132,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01356,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01356,"percentile":0.71395}]},"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-193","name":"Off-by-one Error","description":"A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/193.html"}],"affected":[{"vendor":"alpine","product":"botan","name":"botan","label":"botan","ecosystem":"Alpine Linux","cpePart":null,"purl":"pkg:apk/alpine/botan","purlType":"apk","versions":[{"text":"≥ 1.11.32, < 2.6.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.11.32, < 2.6.0-r0","eol":null,"hubHref":null},{"vendor":"botan_project","product":"botan","name":"botan","label":"botan","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 1.11.32, < 2.6.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.11.32, < 2.6.0","eol":null,"hubHref":"/vendor/botan_project/botan"},{"vendor":"debian","product":"botan","name":"botan","label":"botan","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/botan","purlType":"deb","versions":[{"text":"< 2.4.0-6","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.4.0-6","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"botan","name":"botan","label":"botan","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/botan","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"botan1.10","name":"botan1.10","label":"botan1.10","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/botan1.10","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null}],"affectedCount":5,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7434","label":"bugs.chromium.org/p/oss-fuzz/issues/detail?id=7434","hostname":"bugs.chromium.org","tags":["X Refsource MISC","Issue Tracking"]},{"url":"https://botan.randombit.net/security.html","label":"botan.randombit.net/security.html","hostname":"botan.randombit.net","tags":["X Refsource MISC","Vendor Advisory"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2018-9860","label":"security.alpinelinux.org/vuln/CVE-2018-9860","hostname":"security.alpinelinux.org","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-9860","label":"ubuntu.com/security/CVE-2018-9860","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://github.com/randombit/botan/commit/ec222c99719c396a1f4756b2ca345dbbfbeb5ed5","label":"github.com/randombit/botan/commit/ec222c99719c396a1f4756b2ca345dbbfbeb5ed5","hostname":"github.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-9860","label":"www.cve.org/CVERecord?id=CVE-2018-9860","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-9860","label":"security-tracker.debian.org/tracker/CVE-2018-9860","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2024:10594-1"],"duplicates":[],"related":["OPENSUSE-SU-2024:10594-1"]},"timeline":[{"kind":"published","date":"2018-04-12T05:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T07:24:56.311Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T12:14:35.317Z","stale":false,"partial":false}}