Mozilla Firefox Esr vulnerabilities

CVE-2020-15669 [HIGH] CWE-416 CVE-2020-15669: When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objec When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12.

CVE-2020-15670 [HIGH] CWE-362 CVE-2020-15670: Mozilla developers reported memory safety bugs present in Firefox for Android 79. Some of these bugs Mozilla developers reported memory safety bugs present in Firefox for Android 79. 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 < 80, Firefox ESR < 78.2, Thunderbird < 78.2, and Firefox for Android < 80.

CVE-2020-15678 [HIGH] CWE-416 CVE-2020-15678: When recursing through graphical layers while scrolling, an iterator may have become invalid, result When recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free. This occurs because the function APZCTreeManager::ComputeClippedCompositionBounds did not follow iterator invalidation rules. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.

CVE-2020-15663 [HIGH] CWE-427 CVE-2020-15663: If Firefox is installed to a user-writable directory, the Mozilla Maintenance Service would execute If Firefox is installed to a user-writable directory, the Mozilla Maintenance Service would execute updater.exe from the install location with system privileges. Although the Mozilla Maintenance Service does ensure that updater.exe is signed by Mozilla, the version could have been rolled back to a previous version which would have allowed exploitation

CVE-2020-15673 [HIGH] CWE-416 CVE-2020-15673: Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. Some of t Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. 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 < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.

CVE-2020-15664 [MEDIUM] CWE-863 CVE-2020-15664: By holding a reference to the eval() function from an about:blank window, a malicious webpage could By holding a reference to the eval() function from an about:blank window, a malicious webpage could have gained access to the InstallTrigger object which would allow them to prompt the user to install an extension. Combined with user confusion, this could result in an unintended or malicious extension being installed. This vulnerability affects Firef

CVE-2020-15676 [MEDIUM] CWE-79 CVE-2020-15676: Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove, Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove, resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable element. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.

CVE-2020-15677 [MEDIUM] CWE-601 CVE-2020-15677: By exploiting an Open Redirect vulnerability on a website, an attacker could have spoofed the site d By exploiting an Open Redirect vulnerability on a website, an attacker could have spoofed the site displayed in the download file dialog to show the original site (the one suffering from the open redirect) rather than the site the file was actually downloaded from. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.

CVE-2020-15656 [HIGH] CWE-843 CVE-2020-15656: JIT optimizations involving the Javascript arguments object could confuse later optimizations. This JIT optimizations involving the Javascript arguments object could confuse later optimizations. This risk was already mitigated by various precautions in the code, resulting in this bug rated at only moderate severity. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

CVE-2020-15659 [HIGH] CWE-787 CVE-2020-15659: Mozilla developers and community members reported memory safety bugs present in Firefox 78 and Firef Mozilla developers and community members reported memory safety bugs present in Firefox 78 and Firefox ESR 78.0. 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 Firefox < 79, Firefox ESR < 68.11, Firefox ESR < 78.1,

CVE-2020-15657 [HIGH] CWE-427 CVE-2020-15657: Firefox could be made to load attacker-supplied DLL files from the installation directory. This requ Firefox could be made to load attacker-supplied DLL files from the installation directory. This required an attacker that is already capable of placing files in the installation directory. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, an

CVE-2020-15655 [MEDIUM] CVE-2020-15655: A redirected HTTP request which is observed or modified through a web extension could bypass existin A redirected HTTP request which is observed or modified through a web extension could bypass existing CORS checks, leading to potential disclosure of cross-origin information. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

CVE-2020-15652 [MEDIUM] CWE-346 CVE-2020-15652: By observing the stack trace for JavaScript errors in web workers, it was possible to leak the resul By observing the stack trace for JavaScript errors in web workers, it was possible to leak the result of a cross-origin redirect. This applied only to content that can be parsed as script. This vulnerability affects Firefox < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, and Thunderbird < 78.1.

CVE-2020-15649 [MEDIUM] CWE-434 CVE-2020-15649: Given an installed malicious file picker application, an attacker was able to steal and upload local Given an installed malicious file picker application, an attacker was able to steal and upload local files of their choosing, regardless of the actually files picked. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 68.11.

CVE-2020-15658 [MEDIUM] CWE-754 CVE-2020-15658: The code for downloading files did not properly take care of special characters, which led to an att The code for downloading files did not properly take care of special characters, which led to an attacker being able to cut off the file ending at an earlier position, leading to a different file type being downloaded than shown in the dialog. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

CVE-2020-15653 [MEDIUM] CVE-2020-15653: An iframe sandbox element with the allow-popups flag could be bypassed when using noopener links. Th An iframe sandbox element with the allow-popups flag could be bypassed when using noopener links. This could have led to security issues for websites relying on sandbox configurations that allowed popups and hosted arbitrary content. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

CVE-2020-15650 [MEDIUM] CVE-2020-15650: Given an installed malicious file picker application, an attacker was able to overwrite local files Given an installed malicious file picker application, an attacker was able to overwrite local files and thus overwrite Firefox settings (but not access the previous profile). *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 68.11.

CVE-2020-15654 [MEDIUM] CWE-835 CVE-2020-15654: When in an endless loop, a website specifying a custom cursor using CSS could make it look like the When in an endless loop, a website specifying a custom cursor using CSS could make it look like the user is interacting with the user interface, when they are not. This could lead to a perceived broken state, especially when interactions with existing browser dialogs and warnings do not work. This vulnerability affects Firefox ESR < 78.1, Firefox < 7

CVE-2020-12419 [HIGH] CWE-416 CVE-2020-12419: When processing callbacks that occurred during window flushing in the parent process, the associated When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

CVE-2020-12406 [HIGH] CWE-345 CVE-2020-12406: Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resul Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.