Mozilla Firefox and Mozilla Firefox ESR Memory Corruption Vulnerability

Mozilla Firefox and Mozilla Firefox ESR are both products of the Mozilla Foundation in the U.S. Mozilla Firefox is an open source web browser.Mozilla Firefox ESR is an extended support version of Firefox web browser. A security vulnerability exists in Mozilla Firefox version 66 and Firefox ESR...

UBUNTU-CVE-2019-9820

A use-after-free vulnerability can occur in the chrome event handler when it is freed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird 60.7, Firefox 67, and Firefox ESR 60.7...

UBUNTU-CVE-2019-11691

A use-after-free vulnerability can occur when working with XMLHttpRequest XHR in an event loop, causing the XHR main thread to be called after it has been freed. This results in a potentially exploitable crash. This vulnerability affects Thunderbird 60.7, Firefox 67, and Firefox ESR 60.7...

Mozilla: Type inference is incorrect for constructors entered through on-stack replacement with IonMonkey

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...

Mozilla: IonMonkey leaks JS_OPTIMIZED_OUT magic value to script

The IonMonkey just-in-time JIT compiler can leak an internal JSOPTIMIZEDOUT 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...

Mozilla: Memory safety bugs fixed in Firefox 66 and Firefox ESR 60.6

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...

UBUNTU-CVE-2019-9792

The IonMonkey just-in-time JIT compiler can leak an internal JSOPTIMIZEDOUT 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...

Vulnerability in web browsers Firefox and Firefox ESR, as well as the Thunderbird email program, related to buffer overflow in memory, allowing an attacker to execute arbitrary code.

The vulnerability of Firefox browsers, Firefox ESR, and the email processing program Thunderbird is related to buffer overflow in memory. Exploiting this vulnerability can allow an attacker to cause service interruptions remotely...

Vulnerability in Firefox web browsers, Firefox ESR, and Thunderbird email client, caused by an operation that goes beyond buffer boundaries in memory, allowing attackers to execute arbitrary code.

The vulnerability in web browsers Firefox, Firefox ESR, and the email client Thunderbird arises from an operation that goes beyond the buffer limits in memory. Exploiting this vulnerability allows a malicious actor to execute arbitrary code through a specially crafted web page...

DEBIAN-CVE-2018-12389

Mozilla developers and community members reported memory safety bugs present in Firefox ESR 60.2. 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 ESR 60.3...

DEBIAN-CVE-2018-12397

A WebExtension can request access to local files without the warning prompt stating that the extension will "Access your data for all websites" being displayed to the user. This allows extensions to run content scripts in local pages without permission warnings when a local file is opened. This...

Mozilla: Integer overflow when calculating buffer sizes for images

A potential vulnerability leading to an integer overflow can occur during buffer size calculations for images when a raw value is used instead of the checked value. This leads to a possible out-of-bounds write. This vulnerability affects Thunderbird 60.4, Firefox ESR 60.4, and Firefox 64...

Mozilla: Buffer overflow in accelerated 2D canvas with Skia

A buffer overflow can occur in the Skia library during buffer offset calculations with hardware accelerated canvas 2D actions due to the use of 32-bit calculations instead of 64-bit. This results in a potentially exploitable crash. This vulnerability affects Thunderbird 60.4, Firefox ESR 60.4, an...

Mozilla Firefox and Firefox ESR Buffer Overflow Vulnerability (CNVD-2018-25869)

Mozilla Firefox and Firefox ESR are both browser products developed by the Mozilla Foundation in the U.S. Firefox is an open source web browser; Firefox ESR is an extended support version of Firefox. Mozilla Firefox versions prior to 64 and Firefox ESR versions prior to 60.4 have a Skia stock in...

The vulnerability in the Firefox ESR web browser and Thunderbird email client, related to a potential integer overflow, allows an attacker to execute arbitrary code.

The vulnerability in the Firefox ESR web browser and Thunderbird email client is related to a numerical overflow condition. Exploiting this vulnerability allows an attacker operating remotely to execute arbitrary code...

The vulnerability of Firefox ESR browsers relates to the execution of operations beyond the buffer in memory, which allows an attacker to trigger a service failure or execute arbitrary code.

The vulnerability of Firefox ESR is related to a flaw that causes reading beyond the allocated memory buffer during graphic operations. Exploiting this vulnerability can allow an attacker to cause service failures or execute arbitrary code...

Mozilla Firefox and Firefox ESR Arbitrary Code Execution Vulnerability (CNVD-2018-22936)

Mozilla Firefox is an open source web browser developed by the Mozilla Foundation in the U.S. Firefox ESR is an extended support version of Firefox. A security vulnerability exists in Mozilla Firefox version 62 and Firefox ESR version 60.2. The vulnerability can be exploited by remote attackers t...

Mozilla Firefox and Firefox ESR Arbitrary Code Execution Vulnerability (CNVD-2018-22935)

Mozilla Firefox is an open source web browser developed by the Mozilla Foundation in the U.S. Firefox ESR is an extended support version of Firefox. A security vulnerability exists in Mozilla Firefox versions prior to 63 and Firefox ESR versions prior to 60.3, which stems from a failure of the...

Mozilla: WebExtension content scripts can execute in disallowed contexts

A vulnerability where a WebExtension can run content scripts in disallowed contexts following navigation or other events. This allows for potential privilege escalation by the WebExtension on sites where content scripts should not be run. This vulnerability affects Firefox ESR 60.3 and Firefox 63...

UBUNTU-CVE-2018-12395

By rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions through domain fronting. This would allow access to domains that share a host that are otherwise restricted. This vulnerability affects Firefox ESR 60.3 and Firefox 63...