Mozilla Firefox vulnerabilities

CVE-2019-9792 [CRITICAL] CWE-787 CVE-2019-9792: The IonMonkey just-in-time (JIT) compiler can leak an internal JS_OPTIMIZED_OUT magic value to the r The IonMonkey just-in-time (JIT) compiler can leak an internal JS_OPTIMIZED_OUT magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

CVE-2019-9788 [CRITICAL] CWE-787 CVE-2019-9788: Mozilla developers and community members reported memory safety bugs present in Firefox 65, Firefox Mozilla developers and community members reported memory safety bugs present in Firefox 65, Firefox ESR 60.5, and Thunderbird 60.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.

CVE-2019-9796 [CRITICAL] CWE-416 CVE-2019-9796: A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers wi A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration is expected. When a registration is later freed with the removal of the animation controller element, the refresh driver incorrectly leaves a dangling pointer to the driver's observer array.

CVE-2019-9789 [CRITICAL] CWE-787 CVE-2019-9789: Mozilla developers and community members reported memory safety bugs present in Firefox 65. Some of Mozilla developers and community members reported memory safety bugs present in Firefox 65. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 66.

CVE-2019-9804 [CRITICAL] CWE-78 CVE-2019-9804: In Firefox Developer Tools it is possible that pasting the result of the 'Copy as cURL' command into In Firefox Developer Tools it is possible that pasting the result of the 'Copy as cURL' command into a command shell on macOS will cause the execution of unintended additional bash script commands if the URL was maliciously crafted. This is the result of an issue with the native version of Bash on macOS. *Note: This issue only affects macOS. Other op

CVE-2019-9794 [CRITICAL] CWE-88 CVE-2019-9794: A vulnerability was discovered where specific command line arguments are not properly discarded duri A vulnerability was discovered where specific command line arguments are not properly discarded during Firefox invocation as a shell handler for URLs. This could be used to retrieve and execute files whose location is supplied through these command line arguments if Firefox is configured as the default URI handler for a given URI scheme in third part

CVE-2019-9805 [CRITICAL] CWE-908 CVE-2019-9805: A latent vulnerability exists in the Prio library where data may be read from uninitialized memory f A latent vulnerability exists in the Prio library where data may be read from uninitialized memory for some functions, leading to potential memory corruption. This vulnerability affects Firefox < 66.

CVE-2019-9791 [CRITICAL] CWE-843 CVE-2019-9791: The type inference system allows the compilation of functions that can cause type confusions between The type inference system allows the compilation of functions that can cause type confusions between arbitrary objects when compiled through the IonMonkey just-in-time (JIT) compiler and when the constructor function is entered through on-stack replacement (OSR). This allows for possible arbitrary reading and writing of objects during an exploitable

CVE-2019-9795 [CRITICAL] CWE-617 CVE-2019-9795: A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by malicious JavaScript to trigger a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

CVE-2019-9790 [CRITICAL] CWE-416 CVE-2019-9790: A use-after-free vulnerability can occur when a raw pointer to a DOM element on a page is obtained u A use-after-free vulnerability can occur when a raw pointer to a DOM element on a page is obtained using JavaScript and the element is then removed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

CVE-2019-9813 [HIGH] CWE-843 CVE-2019-9813: Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can b Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.

CVE-2019-9803 [HIGH] CWE-346 CVE-2019-9803: The Upgrade-Insecure-Requests (UIR) specification states that if UIR is enabled through Content Secu The Upgrade-Insecure-Requests (UIR) specification states that if UIR is enabled through Content Security Policy (CSP), navigation to a same-origin URL must be upgraded to HTTPS. Firefox will incorrectly navigate to an HTTP URL rather than perform the security upgrade requested by the CSP in some circumstances, allowing for potential man-in-the-middle at

CVE-2019-9810 [HIGH] CWE-119 CVE-2019-9810: Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to m Incorrect alias information in IonMonkey JIT compiler for Array.prototype.slice method may lead to missing bounds check and a buffer overflow. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.

CVE-2019-9809 [HIGH] CWE-399 CVE-2019-9809: If the source for resources on a page is through an FTP connection, it is possible to trigger a seri If the source for resources on a page is through an FTP connection, it is possible to trigger a series of modal alert messages for these resources through invalid credentials or locations. These messages cannot be immediately dismissed, allowing for a denial of service (DOS) attack. This vulnerability affects Firefox < 66.

CVE-2019-9799 [HIGH] CWE-20 CVE-2019-9799: Insufficient bounds checking of data during inter-process communication might allow a compromised co Insufficient bounds checking of data during inter-process communication might allow a compromised content process to be able to read memory from the parent process under certain conditions. This vulnerability affects Firefox < 66.

CVE-2019-9802 [HIGH] CWE-125 CVE-2019-9802: If a Sandbox content process is compromised, it can initiate an FTP download which will then use a c If a Sandbox content process is compromised, it can initiate an FTP download which will then use a child process to render the downloaded data. The downloaded data can then be passed to the Chrome process with an arbitrary file length supplied by an attacker, bypassing sandbox protections and allow for a potential memory read of adjacent data from the p

CVE-2019-9806 [HIGH] CWE-399 CVE-2019-9806: A vulnerability exists during authorization prompting for FTP transaction where successive modal pro A vulnerability exists during authorization prompting for FTP transaction where successive modal prompts are displayed and cannot be immediately dismissed. This allows for a denial of service (DOS) attack. This vulnerability affects Firefox < 66.

CVE-2019-9798 [HIGH] CWE-426 CVE-2019-9798: On Android systems, Firefox can load a library from APITRACE_LIB, which is writable by all users and On Android systems, Firefox can load a library from APITRACE_LIB, which is writable by all users and applications. This could allow malicious third party applications to execute a man-in-the-middle attack if a malicious code was written to that location and loaded. *Note: This issue only affects Android. Other operating systems are unaffected.*. This vu

CVE-2018-5179 [HIGH] CWE-772 CVE-2018-5179: A service worker can send the activate event on itself periodically which allows it to run perpetual A service worker can send the activate event on itself periodically which allows it to run perpetually, allowing it to monitor activity by users. Affects all versions prior to Firefox 60.

CVE-2019-9801 [MEDIUM] CWE-20 CVE-2019-9801: Firefox will accept any registered Program ID as an external protocol handler and offer to launch th Firefox will accept any registered Program ID as an external protocol handler and offer to launch this local application when given a matching URL on Windows operating systems. This should only happen if the program has specifically registered itself as a "URL Handler" in the Windows registry. *Note: This issue only affects Windows operating systems. O