Summary
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.
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | firefox | 91.4.0-1.el8_5.alma |
Vulnerabilities 9
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Unscored —
Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the target URL. T…
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Unscored —
An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a p…
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Unscored —
By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that h…
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Unscored —
Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within …
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Unscored —
When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly esc…
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Unscored —
Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading ex…
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Unscored —
Documents loaded with the CSP sandbox directive could have escaped the sandbox's script restriction by embedding additi…
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Unscored —
Using the Location API in a loop could have caused severe application hangs and crashes. This vulnerability affects Thu…
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Unscored —
It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor. This vulnerabil…
References
-
report
https://vulners.com/cve/CVE-2021-43536
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report
https://vulners.com/cve/CVE-2021-43537
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report
https://vulners.com/cve/CVE-2021-43538
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report
https://vulners.com/cve/CVE-2021-43539
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report
https://vulners.com/cve/CVE-2021-43541
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report
https://vulners.com/cve/CVE-2021-43542
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report
https://vulners.com/cve/CVE-2021-43543
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report
https://vulners.com/cve/CVE-2021-43545
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report
https://vulners.com/cve/CVE-2021-43546