Mozilla Firefox Esr vulnerabilities

CVE-2021-43538 [MEDIUM] CWE-362 CVE-2021-43538: By misusing a race in our notification code, an attacker could have forcefully hidden the notificati 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.

CVE-2021-38506 [MEDIUM] CWE-1021 CVE-2021-38506: Through a series of navigations, Firefox could have entered fullscreen mode without notification or Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

CVE-2021-38500 [HIGH] CVE-2021-38500: Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. Some of t Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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 Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and

CVE-2021-38498 [HIGH] CWE-416 CVE-2021-38498: During process shutdown, a document could have caused a use-after-free of a languages service object During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

CVE-2021-38496 [HIGH] CWE-416 CVE-2021-38496: During operations on MessageTasks, a task may have been removed while it was still scheduled, result During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93.

CVE-2021-38495 [HIGH] CWE-787 CVE-2021-38495: Mozilla developers reported memory safety bugs present in Thunderbird 78.13.0. Some of these bugs sh Mozilla developers reported memory safety bugs present in Thunderbird 78.13.0. 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 Thunderbird < 91.1 and Firefox ESR < 91.1.

CVE-2021-38493 [HIGH] CWE-787 CVE-2021-38493: Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. Some of Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. 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 ESR < 78.14, Thunderbird < 78.14, and Firefox < 92.

CVE-2021-38501 [HIGH] CVE-2021-38501: Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. Some of t Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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 < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

CVE-2021-38497 [MEDIUM] CWE-346 CVE-2021-38497: Through use of reportValidity() and window.open(), a plain-text validation message could have been o Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

CVE-2021-38492 [MEDIUM] CVE-2021-38492: When delegating navigations to the operating system, Firefox would accept the `mk` scheme which migh When delegating navigations to the operating system, Firefox would accept the `mk` scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode. *This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92, Thunderbird < 91.1, Thunderbird < 7

CVE-2021-29984 [HIGH] CWE-787 CVE-2021-29984: Instruction reordering resulted in a sequence of instructions that would cause an object to be incor Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.

CVE-2021-29988 [HIGH] CWE-125 CVE-2021-29988: Firefox incorrectly treated an inline list-item element as a block element, resulting in an out of b Firefox incorrectly treated an inline list-item element as a block element, resulting in an out of bounds read or memory corruption, and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.

CVE-2021-29985 [HIGH] CWE-416 CVE-2021-29985: A use-after-free vulnerability in media channels could have led to memory corruption and a potential A use-after-free vulnerability in media channels could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.

CVE-2021-29986 [HIGH] CWE-362 CVE-2021-29986: A suspected race condition when calling getaddrinfo led to memory corruption and a potentially explo A suspected race condition when calling getaddrinfo led to memory corruption and a potentially exploitable crash. *Note: This issue only affected Linux operating systems. Other operating systems are unaffected.* This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.

CVE-2021-29980 [HIGH] CWE-909 CVE-2021-29980: Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corr Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.

CVE-2021-29989 [HIGH] CWE-787 CVE-2021-29989: Mozilla developers reported memory safety bugs present in Firefox 90 and Firefox ESR 78.12. Some of Mozilla developers reported memory safety bugs present in Firefox 90 and Firefox ESR 78.12. 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 Thunderbird < 78.13, Firefox ESR < 78.13, and Firefox < 91.

CVE-2021-29970 [HIGH] CWE-416 CVE-2021-29970: A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially expl A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. *This bug could only be triggered when accessibility was enabled.*. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.

CVE-2021-29976 [HIGH] CWE-787 CVE-2021-29976: Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbir Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. 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 Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.

CVE-2021-23999 [HIGH] CWE-269 CVE-2021-23999: If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the Sys If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

CVE-2021-29946 [HIGH] CWE-190 CVE-2021-29946: Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypas Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc header. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.