{"schemaVersion":3,"id":"CVE-2017-7244","aliases":["ALPINE-CVE-2017-7244","UBUNTU-CVE-2017-7244","DEBIAN-CVE-2017-7244"],"status":"published","duplicateOf":null,"title":null,"description":"The _pcre32_xclass function in pcre_xclass.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denial of service (invalid memory read) via a crafted file.","dates":{"published":"2017-03-23T21:00:00.000Z","modified":"2024-08-05T15:56:36.394Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.5,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"NVD","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":5.5,"severity":"medium","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Alpine","score":5.5,"severity":"medium","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":4.6,"impact":6,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Ubuntu","score":5.5,"severity":"medium","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":4.6,"impact":6,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Debian","score":5.5,"severity":"medium","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":4.6,"impact":6,"computed":true}]},"epss":{"probability":0.01995,"percentile":0.80526,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":-1.2219999999999998,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.03217},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.03217,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01995,"percentile":0.80526}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.03217,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01995,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01995,"percentile":0.80526}]},"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":"alpine","product":"pcre","name":"pcre","label":"pcre","ecosystem":"Alpine Linux","cpePart":null,"purl":"pkg:apk/alpine/pcre","purlType":"apk","versions":[{"text":"< 8.41-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 8.41-r0","eol":null,"hubHref":null},{"vendor":"debian","product":"pcre3","name":"pcre3","label":"pcre3","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/pcre3","purlType":"deb","versions":[{"text":"< 2:8.39-3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2:8.39-3","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"pcre3","name":"pcre3","label":"pcre3","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/pcre3","purlType":"deb","versions":[{"text":"< 2:8.38-3.1ubuntu0.1~esm2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2:8.38-3.1ubuntu0.1~esm2","eol":null,"hubHref":null},{"vendor":"pcre","product":"pcre","name":"pcre","label":"pcre","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"8.40","noFixRecorded":false,"fixedIn":null}],"versionsText":"8.40","eol":null,"hubHref":"/vendor/pcre/pcre"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"http://www.securityfocus.com/bid/97067","label":"www.securityfocus.com/bid/97067","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID","Third Party Advisory"]},{"url":"https://blogs.gentoo.org/ago/2017/03/20/libpcre-invalid-memory-read-in-_pcre32_xclass-pcre_xclass-c/","label":"blogs.gentoo.org/ago/2017/03/20/libpcre-invalid-memory-read-in-_pcre32_xclass-pcre_xclass-c/","hostname":"blogs.gentoo.org","tags":["X Refsource MISC","Third Party Advisory","VDB Entry","REPORT"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2486","label":"access.redhat.com/errata/RHSA-2018:2486","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://security.gentoo.org/glsa/201710-25","label":"security.gentoo.org/glsa/201710-25","hostname":"security.gentoo.org","tags":["Vendor Advisory","X Refsource GENTOO"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2017-7244","label":"security.alpinelinux.org/vuln/CVE-2017-7244","hostname":"security.alpinelinux.org","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-7244","label":"ubuntu.com/security/CVE-2017-7244","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-7244","label":"www.cve.org/CVERecord?id=CVE-2017-7244","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-7244","label":"security-tracker.debian.org/tracker/CVE-2017-7244","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["MGASA-2017-0454","SUSE-SU-2021:3652-1"],"duplicates":[],"related":["SUSE-SU-2021:3652-1"]},"timeline":[{"kind":"published","date":"2017-03-23T21:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T15:56:36.394Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":22,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T14:49:16.566Z","stale":false,"partial":false}}