{"schemaVersion":3,"id":"SUSE-SU-2021:3721-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Security update for MozillaFirefox\n\nThis update for MozillaFirefox fixes the following issues:\n\nMozillaFirefox was updated to Extended Support Release 91.3.0 ESR\n\n* Fixed: Various stability, functionality, and security fixes\n\nMFSA 2021-49 (bsc#1192250)\n\n  * CVE-2021-38503: iframe sandbox rules did not apply to XSLT stylesheets\n  * CVE-2021-38504: Use-after-free in file picker dialog\n  * CVE-2021-38505: Windows 10 Cloud Clipboard may have recorded sensitive user data\n  * CVE-2021-38506: Firefox could be coaxed into going into fullscreen mode without notification or warning\n  * CVE-2021-38507: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports\n  * CVE-2021-38508: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing\n  * CVE-2021-38509: Javascript alert box could have been spoofed onto an arbitrary domain\n  * CVE-2021-38510: Download Protections were bypassed by .inetloc files on Mac OS\n  * MOZ-2021-0008: Use-after-free in HTTP2 Session object\n  * MOZ-2021-0007: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3","dates":{"published":"2021-11-17T09:29:27.000Z","modified":"2026-02-04T03:00:56.199Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"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":"suse","product":"MozillaFirefox&distro=HPE Helion OpenStack 8","name":"MozillaFirefox","label":"MozillaFirefox&distro=HPE Helion OpenStack 8","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=HPE Helion OpenStack 8","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP2-BCL","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP2-BCL","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP2-BCL","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP3-BCL","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP3-BCL","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP3-BCL","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP3-LTSS","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP3-LTSS","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP3-LTSS","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP4-LTSS","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP4-LTSS","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP4-LTSS","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP5","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP5","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE Linux Enterprise Server 12 SP5","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP3","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP3","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP3","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP4","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP4","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP4","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE Linux Enterprise Software Development Kit 12 SP5","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE Linux Enterprise Software Development Kit 12 SP5","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE Linux Enterprise Software Development Kit 12 SP5","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE OpenStack Cloud 8","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE OpenStack Cloud 8","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE OpenStack Cloud 8","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE OpenStack Cloud 9","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE OpenStack Cloud 9","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE OpenStack Cloud 9","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE OpenStack Cloud Crowbar 8","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE OpenStack Cloud Crowbar 8","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE OpenStack Cloud Crowbar 8","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaFirefox&distro=SUSE OpenStack Cloud Crowbar 9","name":"MozillaFirefox","label":"MozillaFirefox&distro=SUSE OpenStack Cloud Crowbar 9","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaFirefox&distro=SUSE OpenStack Cloud Crowbar 9","purlType":"rpm","versions":[{"text":"< 91.3.0-112.80.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 91.3.0-112.80.2","eol":null,"hubHref":null}],"affectedCount":14,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.suse.com/support/update/announcement/2021/suse-su-20213721-1/","label":"www.suse.com/support/update/announcement/2021/suse-su-20213721-1/","hostname":"www.suse.com","tags":["Advisory"]},{"url":"https://bugzilla.suse.com/1192250","label":"bugzilla.suse.com/1192250","hostname":"bugzilla.suse.com","tags":["REPORT"]},{"url":"https://www.suse.com/security/cve/CVE-2021-38503","label":"www.suse.com/security/cve/CVE-2021-38503","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2021-38504","label":"www.suse.com/security/cve/CVE-2021-38504","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2021-38505","label":"www.suse.com/security/cve/CVE-2021-38505","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2021-38506","label":"www.suse.com/security/cve/CVE-2021-38506","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2021-38507","label":"www.suse.com/security/cve/CVE-2021-38507","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2021-38508","label":"www.suse.com/security/cve/CVE-2021-38508","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2021-38509","label":"www.suse.com/security/cve/CVE-2021-38509","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2021-38510","label":"www.suse.com/security/cve/CVE-2021-38510","hostname":"www.suse.com","tags":["WEB"]}],"lineage":{"upstream":["CVE-2021-38503","CVE-2021-38504","CVE-2021-38505","CVE-2021-38506","CVE-2021-38507","CVE-2021-38508","CVE-2021-38509","CVE-2021-38510"],"downstream":[],"duplicates":[],"related":["CVE-2021-38503","CVE-2021-38504","CVE-2021-38505","CVE-2021-38506","CVE-2021-38507","CVE-2021-38508","CVE-2021-38509","CVE-2021-38510"]},"timeline":[{"kind":"published","date":"2021-11-17T09:29:27.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-02-04T03:00:56.199Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T14:36:44.900Z","stale":false,"partial":false}}