Mozilla: Integer-overflow led to out-of-bounds-read in the OpenType sanitizer

The Mozilla Foundation Security Advisory describes this flaw as: On 32-bit versions there were integer-overflows that led to an out-of-bounds-read that potentially could be triggered by a malformed OpenType font...

Mozilla: Privileged JavaScript Execution via Event Handlers

The Mozilla Foundation Security Advisory describes this flaw as: An attacker was able to inject an event handler into a privileged object that would allow arbitrary JavaScript execution in the parent process...

Mozilla: JIT code failed to save return registers on Armv7-A

The Mozilla Foundation Security Advisory describes this flaw as: Return registers were overwritten which could have allowed an attacker to execute arbitrary code. Note: This issue only affected Armv7-A systems. Other operating systems are unaffected...

Mozilla: Incorrect code generation on 32-bit ARM devices

The Mozilla Foundation Security Advisory describes this flaw as: Incorrect code generation could have led to unexpected numeric conversions and potential undefined behavior. This issue only affects 32-bit ARM devices...

Mozilla: Custom cursor could obscure the permission dialog

The Mozilla Foundation Security Advisory describes this flaw as: If a website set a large custom cursor, portions of the cursor could have overlapped with the permission dialog, potentially resulting in user confusion and unexpected granted permissions...

Mozilla Releases Security Updates for Firefox and Thunderbird

Mozilla released security updates to address vulnerabilities in Firefox, Firefox ESR, and Thunderbird. A cyber threat actor could exploit one of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the following Mozilla Security Advisorie...

Mozilla: Bypass of Content Security Policy when directive unsafe-inline was set

The Mozilla Foundation Security Advisory describes this flaw as: When a parent page loaded a child in an iframe with unsafe-inline, the parent Content Security Policy could have overridden the child Content Security Policy...

Mozilla: Out of bounds write in ANGLE

The Mozilla Foundation Security Advisory describes this flaw as: An out of bounds write in ANGLE could have allowed an attacker to corrupt memory leading to a potentially exploitable crash...

Mozilla: Phishing site popup could show local origin in address bar

The Mozilla Foundation Security Advisory describes this flaw as: A phishing site could have repurposed an about: dialog to show phishing content with an incorrect origin in the address bar...

Mozilla: Undefined behavior in <code>ShutdownObserver()</code>

The Mozilla Foundation Security Advisory describes this flaw as: The ShutdownObserver was susceptible to potentially undefined behavior due to its reliance on a dynamic type that lacked a virtual destructor...

Mozilla: Heap-buffer-overflow affecting WebGL <code>DrawElementsInstanced</code> method with Mesa VM driver

The Mozilla Foundation Security Advisory describes this flaw as: The WebGL DrawElementsInstanced method was susceptible to a heap buffer overflow when used on systems with the Mesa VM driver. This issue could allow an attacker to perform remote code execution and sandbox escape...

Mozilla: Heap buffer overflow affected <code>nsWindow::PickerOpen(void)</code> in headless mode

The Mozilla Foundation Security Advisory describes this flaw as: The nsWindow::PickerOpenvoid method was susceptible to a heap buffer overflow when running in headless mode...

Mozilla Releases Security Updates for Firefox and Thunderbird

Mozilla has released security updates to address vulnerabilities in Firefox and Thunderbird. A cyber threat actor could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the following advisories and apply the necessary...

Mozilla: Use-after-free in ReadableByteStreamQueueEntry::Buffer

The Mozilla Foundation Security Advisory describes this flaw as: Ownership mismanagement led to a use-after-free in ReadableByteStreams...

Mozilla: Use-after-free in MessagePort::Entangled

The Mozilla Foundation Security Advisory describes this flaw as: It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash...

Mozilla: Use-after-free in ReadableByteStreamQueueEntry::Buffer

The Mozilla Foundation Security Advisory describes this flaw as: Ownership mismanagement led to a use-after-free in ReadableByteStreams...

Mozilla: Queued up rendering could have allowed websites to clickjack

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes this flaw as follows: Certain browser prompts and dialogs could be activated or dismissed unintentionally by the user due to an insufficient activation delay...

Mozilla: Address bar spoofing via bidirectional characters

The Mozilla Foundation Security Advisory describes this flaw as: An attacker could have created a malicious link using bidirectional characters to spoof the location in the address bar when visited...

Mozilla Releases Security Advisories for Multiple Products

Mozilla has released security updates to address vulnerabilities in Firefox and Thunderbird. A cyber threat actor could exploit one of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the following Mozilla advisories for more...

Mozilla: Out-of-bounds write in PathOps

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes this flaw as: A compromised content process could have provided malicious data in a PathRecording, resulting in an out-of-bounds write, leading to a potentially exploitable crash in a privileged process...