{"schemaVersion":3,"id":"CVE-2023-42956","aliases":["UBUNTU-CVE-2023-42956","DEBIAN-CVE-2023-42956"],"status":"published","duplicateOf":null,"title":null,"description":"The issue was addressed with improved memory handling. This issue is fixed in Safari 17.2, iOS 17.2 and iPadOS 17.2, macOS Sonoma 14.2. Processing web content may lead to a denial-of-service.","dates":{"published":"2024-03-28T15:39:18.246Z","modified":"2025-02-13T17:13:12.584Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00981,"percentile":0.61664,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00981},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00981,"percentile":0.61664}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00981,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00981,"percentile":0.61664}]},"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":[],"affected":[{"vendor":"apple","product":"ios and ipados","name":"iOS and iPadOS","label":"ios and ipados","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 17.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 17.2","eol":null,"hubHref":"/vendor/apple/ios_and_ipados"},{"vendor":"apple","product":"ipados","name":"ipados","label":"ipados","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 17.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 17.2","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"ipados","label":"Apple iPadOS","category":"os"}},"hubHref":"/vendor/apple/ipados"},{"vendor":"apple","product":"iphone_os","name":"iphone os","label":"iphone_os","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 17.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 17.2","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"ios","label":"Apple iOS","category":"os"}},"hubHref":"/vendor/apple/iphone_os"},{"vendor":"apple","product":"macos","name":"macOS","label":"macos","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 14.2","noFixRecorded":false,"fixedIn":null},{"text":"≥ 14.0, < 14.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 14.2 | ≥ 14.0, < 14.2","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"macos","label":"Apple macOS","category":"os"}},"hubHref":"/vendor/apple/macos"},{"vendor":"apple","product":"safari","name":"Safari","label":"safari","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 17.2","noFixRecorded":false,"fixedIn":null},{"text":"< 17.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 17.2 | < 17.2","eol":null,"hubHref":"/vendor/apple/safari"},{"vendor":"debian","product":"webkit2gtk","name":"webkit2gtk","label":"webkit2gtk","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/webkit2gtk","purlType":"deb","versions":[{"text":"< 2.44.1-1~deb12u1","noFixRecorded":false,"fixedIn":null},{"text":"< 2.44.0-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.44.1-1~deb12u1 | < 2.44.0-1","eol":null,"hubHref":null},{"vendor":"debian","product":"wpewebkit","name":"wpewebkit","label":"wpewebkit","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/wpewebkit","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 2.44.1-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 2.44.1-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"qtwebkit-opensource-src","name":"qtwebkit-opensource-src","label":"qtwebkit-opensource-src","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/qtwebkit-opensource-src","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"qtwebkit-source","name":"qtwebkit-source","label":"qtwebkit-source","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/qtwebkit-source","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"webkit2gtk","name":"webkit2gtk","label":"webkit2gtk","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/webkit2gtk","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 2.44.0-0ubuntu0.22.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 2.44.0-0ubuntu0.22.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"webkitgtk","name":"webkitgtk","label":"webkitgtk","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/webkitgtk","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"wpewebkit","name":"wpewebkit","label":"wpewebkit","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/wpewebkit","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null}],"affectedCount":12,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://support.apple.com/en-us/HT214039","label":"support.apple.com/en-us/HT214039","hostname":"support.apple.com","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT214035","label":"support.apple.com/en-us/HT214035","hostname":"support.apple.com","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/HT214036","label":"support.apple.com/en-us/HT214036","hostname":"support.apple.com","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/kb/HT214039","label":"support.apple.com/kb/HT214039","hostname":"support.apple.com","tags":[]},{"url":"http://www.openwall.com/lists/oss-security/2024/03/26/1","label":"www.openwall.com/lists/oss-security/2024/03/26/1","hostname":"www.openwall.com","tags":[]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IXLXIOAH5S7J22LJTCIAVFVVJ4TESAX4/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":[]},{"url":"https://ubuntu.com/security/CVE-2023-42956","label":"ubuntu.com/security/CVE-2023-42956","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://webkitgtk.org/security/WSA-2024-0002.html","label":"webkitgtk.org/security/WSA-2024-0002.html","hostname":"webkitgtk.org","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-42956","label":"www.cve.org/CVERecord?id=CVE-2023-42956","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-6732-1","label":"ubuntu.com/security/notices/USN-6732-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-42956","label":"security-tracker.debian.org/tracker/CVE-2023-42956","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["DSA-5684-1","MGASA-2024-0148","RHSA-2024:9144","RHSA-2025:10364","SUSE-SU-2024:1269-1","SUSE-SU-2024:1270-1","SUSE-SU-2024:1293-1","SUSE-SU-2024:1944-1","SUSE-SU-2024:1976-1","USN-6732-1"],"duplicates":[],"related":["SUSE-SU-2024:1269-1","SUSE-SU-2024:1270-1","SUSE-SU-2024:1293-1","SUSE-SU-2024:1944-1","SUSE-SU-2024:1976-1","USN-6732-1"]},"timeline":[{"kind":"published","date":"2024-03-28T15:39:18.246Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-02-13T17:13:12.584Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T22:47:51.014Z","stale":false,"partial":false}}