Mozilla Firefox vulnerabilities

CVE-2021-29968 [HIGH] CWE-125 CVE-2021-29968: When drawing text onto a canvas with WebRender disabled, an out of bounds read could occur. *This bu When drawing text onto a canvas with WebRender disabled, an out of bounds read could occur. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 89.0.1.

CVE-2021-23995 [HIGH] CWE-672 CVE-2021-23995: When Responsive Design Mode was enabled, it used references to objects that were previously freed. W When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

CVE-2021-29967 [HIGH] CWE-787 CVE-2021-29967: Mozilla developers reported memory safety bugs present in Firefox 88 and Firefox ESR 78.11. Some of Mozilla developers reported memory safety bugs present in Firefox 88 and Firefox ESR 78.11. 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 < 78.11, Firefox < 89, and Firefox ESR < 78.11.

CVE-2021-23994 [HIGH] CWE-909 CVE-2021-23994: A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of b A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound write. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

CVE-2021-29952 [HIGH] CWE-362 CVE-2021-29952: When Web Render components were destructed, a race condition could have caused undefined behavior, a When Web Render components were destructed, a race condition could have caused undefined behavior, and we presume that with enough effort may have been exploitable to run arbitrary code. This vulnerability affects Firefox < 88.0.1 and Firefox for Android < 88.1.3.

CVE-2021-23997 [HIGH] CWE-681 CVE-2021-23997: Due to unexpected data type conversions, a use-after-free could have occurred when interacting with Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects 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.

CVE-2021-24002 [HIGH] CWE-74 CVE-2021-24002: When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would have been interpreted as such and allowed arbitrary commands to be sent to the FTP server. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

CVE-2021-29945 [MEDIUM] CWE-682 CVE-2021-29945: The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read an The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. *Note: This issue only affected x86-32 platforms. Other platforms are unaffected.*. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

CVE-2021-29959 [MEDIUM] CWE-863 CVE-2021-29959: When a user has already allowed a website to access microphone and camera, disabling camera sharing When a user has already allowed a website to access microphone and camera, disabling camera sharing would not fully prevent the website from re-enabling it without an additional prompt. This was only possible if the website kept recording with the microphone until re-enabling the camera. This vulnerability affects Firefox < 89.

CVE-2021-29961 [MEDIUM] CWE-863 CVE-2021-29961: When styling and rendering an oversized `<select>` element, Firefox did not apply correct clipping w When styling and rendering an oversized `` element, Firefox did not apply correct clipping which allowed an attacker to paint over the user interface. This vulnerability affects Firefox < 89.

CVE-2021-24001 [MEDIUM] CWE-668 CVE-2021-24001: A compromised content process could have performed session history manipulations it should not have A compromised content process could have performed session history manipulations it should not have been able to due to testing infrastructure that was not restricted to testing-only configurations. This vulnerability affects Firefox < 88.

CVE-2021-29944 [MEDIUM] CWE-79 CVE-2021-29944: Lack of escaping allowed HTML injection when a webpage was viewed in Reader View. While a Content Se Lack of escaping allowed HTML injection when a webpage was viewed in Reader View. While a Content Security Policy prevents direct code execution, HTML injection is still possible. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 88.

CVE-2021-29963 [MEDIUM] CWE-345 CVE-2021-29963: Address bar search suggestions in private browsing mode were re-using session data from normal mode. Address bar search suggestions in private browsing mode were re-using session data from normal mode. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 89.

CVE-2021-29951 [MEDIUM] CWE-269 CVE-2021-29951: The Mozilla Maintenance Service granted SERVICE_START access to BUILTIN|Users which, in a domain net The Mozilla Maintenance Service granted SERVICE_START access to BUILTIN|Users which, in a domain network, grants normal remote users access to start or stop the service. This could be used to prevent the browser update service from operating (if an attacker spammed the 'Stop' command); but also exposed attack surface in the maintenance service. *Not

CVE-2021-29960 [MEDIUM] CWE-669 CVE-2021-29960: Firefox used to cache the last filename used for printing a file. When generating a filename for pri Firefox used to cache the last filename used for printing a file. When generating a filename for printing, Firefox usually suggests the web page title. The caching and suggestion techniques combined may have lead to the title of a website visited during private browsing mode being stored on disk. This vulnerability affects Firefox < 89.

CVE-2021-23998 [MEDIUM] CWE-345 CVE-2021-23998: Through complicated navigations with new windows, an HTTP page could have inherited a secure lock ic Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon from an HTTPS page. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

CVE-2021-29965 [MEDIUM] CWE-610 CVE-2021-29965: A malicious website that causes an HTTP Authentication dialog to be spawned could trick the built-in A malicious website that causes an HTTP Authentication dialog to be spawned could trick the built-in password manager to suggest passwords for the currently active website instead of the website that triggered the dialog. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 89.

CVE-2021-29958 [MEDIUM] CWE-862 CVE-2021-29958: When a download was initiated, the client did not check whether it was in normal or private browsing When a download was initiated, the client did not check whether it was in normal or private browsing mode, which led to private mode cookies being shared in normal browsing mode. This vulnerability affects Firefox for iOS < 34.

CVE-2021-29955 [MEDIUM] CWE-74 CVE-2021-29955: A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an attacker A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an attacker to leak arbitrary memory addresses and may have also enabled JIT type confusion attacks. (A related vulnerability, Speculative Code Store Bypass (SCSB), did not affect Firefox.). This vulnerability affects Firefox ESR < 78.9 and Firefox < 87.