Mozilla Firefox vulnerabilities

CVE-2020-15682 [MEDIUM] CWE-346 CVE-2020-15682: When a link to an external protocol was clicked, a prompt was presented that allowed the user to cho When a link to an external protocol was clicked, a prompt was presented that allowed the user to choose what application to open it in. An attacker could induce that prompt to be associated with an origin they didn't control, resulting in a spoofing attack. This was fixed by changing external protocol prompts to be tab-modal while also ensuring they

CVE-2020-12400 [MEDIUM] CWE-203 CVE-2020-12400: When converting coordinates from projective to affine, the modular inversion was not performed in co When converting coordinates from projective to affine, the modular inversion was not performed in constant time, resulting in a possible timing-based side channel attack. This vulnerability affects Firefox < 80 and Firefox for Android < 80.

CVE-2020-12401 [MEDIUM] CWE-203 CVE-2020-12401: During ECDSA signature generation, padding applied in the nonce designed to ensure constant-time sca During ECDSA signature generation, padding applied in the nonce designed to ensure constant-time scalar multiplication was removed, resulting in variable-time execution dependent on secret data. This vulnerability affects Firefox < 80 and Firefox for Android < 80.

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-2020-15663 [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-2020-15667 [HIGH] CWE-787 CVE-2020-15667: When processing a MAR update file, after the signature has been validated, an invalid name length co When processing a MAR update file, after the signature has been validated, an invalid name length could result in a heap overflow, leading to memory corruption and potentially arbitrary code execution. Within Firefox as released by Mozilla, this issue is only exploitable with the Mozilla-controlled signing key. This vulnerability affects Firefox < 80.

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-2020-15678 [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-2020-15674 [HIGH] CWE-667 CVE-2020-15674: Mozilla developers reported memory safety bugs present in Firefox 80. Some of these bugs showed evid Mozilla developers reported memory safety bugs present in Firefox 80. 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.

CVE-2020-15675 [HIGH] CWE-416 CVE-2020-15675: When processing surfaces, the lifetime may outlive a persistent buffer leading to memory corruption When processing surfaces, the lifetime may outlive a persistent buffer leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 81.

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-2020-15665 [MEDIUM] CVE-2020-15665: Firefox did not reset the address bar after the beforeunload dialog was shown if the user chose to r Firefox did not reset the address bar after the beforeunload dialog was shown if the user chose to remain on the page. This could have resulted in an incorrect URL being shown when used in conjunction with other unexpected browser behaviors. This vulnerability affects Firefox < 80.

CVE-2020-15668 [MEDIUM] CWE-667 CVE-2020-15668: A lock was missing when accessing a data structure and importing certificate information into the tr A lock was missing when accessing a data structure and importing certificate information into the trust database. This vulnerability affects Firefox < 80 and Firefox for Android < 80.

CVE-2020-15666 [MEDIUM] CWE-209 CVE-2020-15666: When trying to load a non-video in an audio/video context the exact status code (200, 302, 404, 500, When trying to load a non-video in an audio/video context the exact status code (200, 302, 404, 500, 412, 403, etc.) was disclosed via the MediaError Message. This level of information leakage is inconsistent with the standardized onerror/onsuccess disclosure and can lead to inferring login status to services or device discovery on a local network a

CVE-2020-15671 [LOW] CWE-200 CVE-2020-15671: When typing in a password under certain conditions, a race may have occured where the InputContext w When typing in a password under certain conditions, a race may have occured where the InputContext was not being correctly set for the input field, resulting in the typed password being saved to the keyboard dictionary. This vulnerability affects Firefox for Android < 80.

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