CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
88.8%
Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.
This update upgrades Firefox to version 91.4.0 ESR.
Security Fix(es):
Mozilla: Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4
Mozilla: URL leakage when navigating while executing asynchronous function (CVE-2021-43536)
Mozilla: Heap buffer overflow when using structured clone (CVE-2021-43537)
Mozilla: Missing fullscreen and pointer lock notification when requesting both (CVE-2021-43538)
Mozilla: GC rooting failure when calling wasm instance methods (CVE-2021-43539)
Mozilla: External protocol handler parameters were unescaped (CVE-2021-43541)
Mozilla: XMLHttpRequest error codes could have leaked the existence of an external protocol handler (CVE-2021-43542)
Mozilla: Bypass of CSP sandbox directive when embedding (CVE-2021-43543)
Mozilla: Denial of Service when using the Location API in a loop (CVE-2021-43545)
Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed (CVE-2021-43546)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
RedHat | 8 | x86_64 | firefox-debuginfo | < 91.4.0-1.el8_1 | firefox-debuginfo-91.4.0-1.el8_1.x86_64.rpm |
RedHat | 8 | ppc64le | firefox-debuginfo | < 91.4.0-1.el8_1 | firefox-debuginfo-91.4.0-1.el8_1.ppc64le.rpm |
RedHat | 8 | x86_64 | firefox-debugsource | < 91.4.0-1.el8_1 | firefox-debugsource-91.4.0-1.el8_1.x86_64.rpm |
RedHat | 8 | x86_64 | firefox | < 91.4.0-1.el8_1 | firefox-91.4.0-1.el8_1.x86_64.rpm |
RedHat | 8 | ppc64le | firefox | < 91.4.0-1.el8_1 | firefox-91.4.0-1.el8_1.ppc64le.rpm |
RedHat | 8 | ppc64le | firefox-debugsource | < 91.4.0-1.el8_1 | firefox-debugsource-91.4.0-1.el8_1.ppc64le.rpm |
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
88.8%