All errata/sisyphus/ALT-PU-2021-3496-2
ALT-PU-2021-3496-2

Package update firefox in branch sisyphus

Version95.0-alt1
Task#291654
Published2026-02-04
Max severityCRITICAL
Severity:

Closed issues (23)

BDU:2021-06177
MEDIUM5.4

Уязвимость браузера Mozilla Firefox и почтового клиента Mozilla Thunderbird, связанная с ошибками криптографических преобразований, позволяющая нарушителю проводить спуфинг-атаки

Published: 2021-12-17Modified: 2024-04-03
CVSS 3.xMEDIUM 5.4
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS 2.0MEDIUM 6.4
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:N
References
BDU:2021-06178
MEDIUM4.3

Уязвимость браузера Mozilla Firefox и почтового клиента Mozilla Thunderbird, связанная с недостаточной проверкой вводимых данных, позволяющая нарушителю обойти существующие ограничения безопасности

Published: 2021-12-17Modified: 2024-04-03
CVSS 3.xMEDIUM 4.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CVSS 2.0MEDIUM 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:P/A:N
References
BDU:2021-06179
MEDIUM4.3

Уязвимость обработки запросов XMLHttpRequest браузера Mozilla Firefox и почтового клиента Mozilla Thunderbird, связанная с раскрытием информации, позволяющая нарушителю получить доступ к конфиденциальной информации

Published: 2021-12-17Modified: 2024-04-03
CVSS 3.xMEDIUM 4.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVSS 2.0MEDIUM 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:N/A:N
References
BDU:2021-06180
MEDIUM5.4

Уязвимость обработки политик CSP браузера Mozilla Firefox и почтового клиента Mozilla Thunderbird, связанная с ошибками в настройках безопасности, позволяющая нарушителю обойти существующие ограничения безопасности

Published: 2021-12-17Modified: 2024-04-03
CVSS 3.xMEDIUM 5.4
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS 2.0MEDIUM 6.4
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:N
References
BDU:2021-06181
LOW3.1

Уязвимость браузера Mozilla Firefox и почтового клиента Mozilla Thunderbird, связанная с ошибками криптографических преобразований, позволяющая нарушителю проводить спуфинг-атаки

Published: 2021-12-17Modified: 2024-04-03
CVSS 3.xLOW 3.1
CVSS:3.x/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
CVSS 2.0LOW 2.6
CVSS:2.0/AV:N/AC:H/Au:N/C:N/I:P/A:N
References
BDU:2021-06182
HIGH8.8

Уязвимость браузера Mozilla Firefox и почтового клиента Mozilla Thunderbird, связанная с неправильным преобразованием типов, позволяющая нарушителю выполнить произвольный код

Published: 2021-12-17Modified: 2024-04-03
CVSS 3.xHIGH 8.8
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0CRITICAL 10.0
CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C
References
BDU:2021-06183
MEDIUM4.3

Уязвимость браузера Mozilla Firefox и почтового клиента Mozilla Thunderbird, связанная с раскрытием информации, позволяющая нарушителю получить доступ к конфиденциальной информации

Published: 2021-12-17Modified: 2024-04-03
CVSS 3.xMEDIUM 4.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVSS 2.0MEDIUM 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:N/A:N
References
BDU:2021-06191
HIGH8.8

Уязвимость браузера Mozilla Firefox и почтового клиента Mozilla Thunderbird, связанная с использованием памяти после ее освобождения, позволяющая нарушителю выполнить произвольный код

Published: 2021-12-17Modified: 2024-04-03
CVSS 3.xHIGH 8.8
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0CRITICAL 10.0
CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C
References
BDU:2021-06192
MEDIUM4.3

Уязвимость браузера Mozilla Firefox и почтового клиента Mozilla Thunderbird, связанная с выполнением цикла с недоступным условием выхода, позволяющая нарушителю выполнить отказ в обслуживании

Published: 2021-12-17Modified: 2024-04-03
CVSS 3.xMEDIUM 4.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS 2.0MEDIUM 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:P
References
BDU:2023-07573
MEDIUM6.5

Уязвимость полноэкранного режима браузера Mozilla Firefox операционной системы MacOS, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2023-11-10
CVSS 3.xMEDIUM 6.5
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0HIGH 7.8
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:C
References
CVE-2021-4128
MEDIUM6.5

When transitioning in and out of fullscreen mode, a graphics object was not correctly protected; resulting in memory corruption and a potentially exploitable crash.
*This bug only affects Firefox on MacOS. Other operating systems are unaffected.*. This vulnerability affects Firefox < 95.

Published: 2022-12-22Modified: 2025-04-16
CVSS 3.xMEDIUM 6.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
CVE-2021-4129
CRITICAL9.8

Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, and Masayuki Nakano reported memory safety bugs present in Firefox 94. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 95, Firefox ESR < 91.4.0, and Thunderbird < 91.4.0.

Published: 2022-12-22Modified: 2025-04-16
CVSS 3.xCRITICAL 9.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
CVE-2021-43536
MEDIUM6.5

Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the target URL. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

Published: 2021-12-08Modified: 2024-11-21
CVSS 2.0MEDIUM 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:N/A:N
CVSS 3.xMEDIUM 6.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
References
CVE-2021-43537
HIGH8.8

An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

Published: 2021-12-08Modified: 2024-11-21
CVSS 2.0MEDIUM 6.8
CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS 3.xHIGH 8.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
CVE-2021-43538
MEDIUM4.3

By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

Published: 2021-12-08Modified: 2024-11-21
CVSS 2.0MEDIUM 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS 3.xMEDIUM 4.3
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
References
CVE-2021-43539
HIGH8.8

Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

Published: 2021-12-08Modified: 2024-11-21
CVSS 2.0MEDIUM 6.8
CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS 3.xHIGH 8.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
CVE-2021-43540
MEDIUM6.5

WebExtensions with the correct permissions were able to create and install ServiceWorkers for third-party websites that would not have been uninstalled with the extension. This vulnerability affects Firefox < 95.

Published: 2021-12-08Modified: 2024-11-21
CVSS 2.0MEDIUM 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS 3.xMEDIUM 6.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
References
CVE-2021-43541
MEDIUM6.5

When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly escaped. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

Published: 2021-12-08Modified: 2024-11-21
CVSS 2.0MEDIUM 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS 3.xMEDIUM 6.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
References
CVE-2021-43542
MEDIUM6.5

Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

Published: 2021-12-08Modified: 2024-11-21
CVSS 2.0MEDIUM 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:N/A:N
CVSS 3.xMEDIUM 6.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
References
CVE-2021-43543
MEDIUM6.1

Documents loaded with the CSP sandbox directive could have escaped the sandbox's script restriction by embedding additional content. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

Published: 2021-12-08Modified: 2024-11-21
CVSS 2.0MEDIUM 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS 3.xMEDIUM 6.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
CVE-2021-43544
MEDIUM6.1

When receiving a URL through a SEND intent, Firefox would have searched for the text, but subsequent usages of the address bar might have caused the URL to load unintentionally, which could lead to XSS and spoofing attacks. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 95.

Published: 2021-12-08Modified: 2024-11-21
CVSS 2.0MEDIUM 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS 3.xMEDIUM 6.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
CVE-2021-43545
MEDIUM6.5

Using the Location API in a loop could have caused severe application hangs and crashes. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

Published: 2021-12-08Modified: 2024-11-21
CVSS 2.0MEDIUM 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS 3.xMEDIUM 6.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
CVE-2021-43546
MEDIUM4.3

It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.

Published: 2021-12-08Modified: 2024-11-21
CVSS 2.0MEDIUM 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS 3.xMEDIUM 4.3
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
References