Incorrect site SSL certificate data display — Mozilla

Security researcher Mark Poticha reported an issue where incorrect SSL certificate information can be displayed on the addressbar, showing the SSL data for a previous site while another has been loaded. This is caused by two onLocationChange events being fired out of the expected order, leading t...

Installer will launch incorrect executable following new installation — Mozilla

Security researcher Masato Kinugawa reported that if a crafted executable is placed in the root partition on a Windows file system, the Firefox and Thunderbird installer will launch this program after a standard installation instead of Firefox or Thunderbird, running this program with the user's...

use-after-free in nsGlobalWindow::PageHidden — Mozilla

Security researcher Arthur Gerkis used the Address Sanitizer tool to find a use-after-free in nsGlobalWindow::PageHidden when mFocusedContent is released and oldFocusedContent is used afterwards. This use-after-free could possibly allow for remote code execution...

window.fullScreen writeable by untrusted content — Mozilla

Mozilla developer Matt Brubeck reported that window.fullScreen is writeable by untrusted content now that the DOM fullscreen API is enabled. Because window.fullScreen does not include mozRequestFullscreen's security protections, it could be used for UI spoofing. This code change makes...

Memory corruption while profiling using Firebug — Mozilla

Marc Schoenefeld reported a crash when using Firebug to profile a JavaScript file with many functions. It may be possible to trigger this crash without the use of debugging APIs, and if so this could be exploitable...

Cross-origin image theft on Mac with integrated Intel GPU — Mozilla

Claus Wahlers reported that random images from GPU memory were showing up in WebGL textures. Once incorporated into the WebGL graphics it is possible for a site to programmatically read the image data and potentially gain sensitive data from other things that had been displayed earlier. This...

Potentially exploitable WebGL crashes — Mozilla

Michael Jordon of Context IS reported that in the ANGLE library used by WebGL the return value from GrowAtomTable was not checked for errors. If an attacker could cause requests that exceeded the available memory those would fail and potentially lead to a buffer overrun as subsequent code wrote...

Crash and remote code execution using HTML tags inside a XUL tree — Mozilla

Security researcher wushi of team509 reported that when a XUL tree had an HTML element nested inside a element then code attempting to display content in the XUL tree would incorrectly treat the element as a parent node to tree content underneath it resulting in incorrect indexes being calculated...

XSS in gopher parser when parsing hrefs — Mozilla

Google security researcher Robert Swiecki reported that functions used by the Gopher parser to convert text to HTML tags could be exploited to turn text into executable JavaScript. If an attacker could create a file or directory on a Gopher server with the encoded script as part of its name the...

UTF-7 XSS by overriding document charset using <object> type attribute — Mozilla

Security researchers David Huang and Collin Jackson of Carnegie Mellon University CyLab Silicon Valley campus reported that the type attribute of an tag can override the charset of a framed HTML document, even when the document is included across origins. A page could be constructed containing su...

XUL tree removal crash and remote code execution — Mozilla

Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that XUL objects could be manipulated such that the setting of certain properties on the object would trigger the removal of the tree from the DOM and cause certain sections of deleted memory to be accessed. In product...

Security Vulnerabilities fixed in Firefox for iOS 155.0 — Mozilla

A malicious webpage could stall a popup's cross-origin navigation after commit, causing the address bar to display the destination origin while continuing to render attacker-controlled content...

Security Vulnerabilities fixed in Firefox ESR 115.8 — Mozilla

When storing and re-accessing data on a networking channel, the length of buffers may have been confused, resulting in an out-of-bounds memory read. Through a series of API calls and redirects, an attacker-controlled alert dialog could have been displayed on another website with the victim...

Cairo rendering crash due to memory allocation issue with FFmpeg 0.10 — Mozilla

Security researcher Bert Massop reported a crash in the Cairo graphics layer on Linux systems using the LibAV library included in version 0.10 of the FFmpeg library. This was due to an error when allocating the LibAV header when decoding some videos...

Information disclosure and local file manipulation through drag and drop — Mozilla

Security researcher Rafael Gieschke reported that file URIs dragged from a web page in Firefox to other software do not have their contents properly filtered before being passed to other programs, such as the local file manager. This can allow for the theft or manipulation of arbitrary local file...

Firefox Health Reports could accept events from untrusted domains — Mozilla

Mozilla engineer Mark Goodwin discovered that the Firefox Health Report about:healthreport accepts certain events from any content document present in the remote-report iframe. If there were another vulnerability that allowed the injection of web content into the Firefox Health Report iframe, thi...

Same-origin policy violation using performance.getEntries and history navigation with session restore — Mozilla

Security researcher Jordi Chancel discovered a variant of Mozilla Foundation Security Advisory 2015-136 which was fixed in Firefox 43. In the original bug, it was possible to read cross-origin URLs following a redirect if performance.getEntries was used along with an iframe to host a page...

Miscellaneous memory safety hazards (rv:44.0 / rv:38.6) — Mozilla

Mozilla developers and community identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of the...

Unsafe memory manipulation found through code inspection — Mozilla

Security researcher Ronald Crane reported three vulnerabilities affecting released code that were found through code inspection. These include a high rated memory safety issue in the ANGLE graphics library, a moderate rated potential wild pointer flaw when handling zip files, and a critical rated...

Crash with JavaScript variable assignment with unboxed objects — Mozilla

Security researcher Cajus Pollmeier reported that Firefox 41 was crashing during some Javascript variable assignments. The issue was caused by an implementation error with unboxed objects and property storing in the JavaScript engine. This error could result in a potentially exploitable crash whe...

Buffer overflow and out-of-bounds read while parsing MP4 video metadata — Mozilla

Security researcher laf.intel reported a buffer overflow and out-of-bounds read in the libstagefright library while parsing invalid metadata in MPEG4 video files. This can lead to a potentially exploitable crash...

Miscellaneous memory safety hazards (rv:38.0 / rv:31.7) — Mozilla

Mozilla developers and community identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of the...

Use-after-free in Developer Console date with OpenType Sanitiser — Mozilla

Using the Address Sanitizer tool, security researcher Atte Kettunen found a problem with OpenType Sanitiser OTS that resulted in a use-after-free while expanding macros in some circumstances. This use-after-free was only used for information displayed in the developer console and was not...

Uninitialized memory use during bitmap rendering — Mozilla

Google security researcher Michal Zalewski reported that when a malformed bitmap image is rendered by the bitmap decoder within a element, memory may not always be properly initialized. The resulting image then uses this uninitialized memory during rendering, allowing data to potentially leak to...

Buffer overflow during CSS manipulation — Mozilla

Using the Address Sanitizer tool, security researcher Atte Kettunen from OUSPG discovered a buffer overflow when making capitalization style changes during CSS parsing. This can cause a crash that is potentially exploitable...

Web Audio memory corruption issues — Mozilla

Security researcher Ash reported an out of bounds read issue with Web Audio. This issue could allow for web content to trigger crashes that are potentially exploitable...

Use-after-free in nsHostResolver — Mozilla

Security researchers Tyson Smith and Jesse Schwartzentruber of the BlackBerry Security Automated Analysis Team used the Address Sanitizer tool while fuzzing to discover a use-after-free during host resolution in some circumstances. This leads to a potentially exploitable crash...

Use-after-free in imgLoader while resizing images — Mozilla

Security researcher Nils discovered a use-after-free error in which the imgLoader object is freed while an image is being resized. This results in a potentially exploitable crash...

Firefox default start page UI content invocable by script — Mozilla

Yazan Tommalieh discovered a flaw that once users have viewed the default Firefox start page about:home, subsequent pages they navigate to in that same tab could use script to activate the buttons that were on the about:home page. Most of these simply open Firefox dialogs such as Settings or...

Segmentation violation when replacing ordered list elements — Mozilla

Security researchers Tyson Smith and Jesse Schwartzentruber of the BlackBerry Security Automated Analysis Team used the Address Sanitizer tool while fuzzing to discover a mechanism where inserting an ordered list into a document through script could lead to a potentially exploitable crash that ca...

Use-after-free in HTML document templates — Mozilla

Security researcher Abhishek Arya Inferno of the Google Chrome Security Team used the Address Sanitizer tool to discover a user-after-free when interacting with HTML document templates. This leads to a potentially exploitable crash...

Security bypass of PDF.js checks using iframes — Mozilla

Security researcher Cody Crews discovered a method to append an iframe into an embedded PDF object rendered with the chrome privileged PDF.js. This can used to bypass security restrictions to load local or chrome privileged files and objects within the embedded PDF object. This can lead to...

Shared object library loading from writable location — Mozilla

Mozilla developer Vladimir Vukicevic reported that Firefox for Android will optionally load a shared object .so library in order to enable GL tracing. When this is occurs, it can be from a world writable location, allowing for it to be replaced by malicious third party applications before it is...

NativeKey continues handling key messages after widget is destroyed — Mozilla

Mozilla developer Masayuki Nakano discovered that the NativeKey widget continues handling key messages even when it is destroyed by dispatched event listeners. This could result in some key events being applied to other objects or plugins if the widget memory is reallocated to them, leading to a...

Use-after-free, buffer overflow, and memory corruption issues found using Address Sanitizer — Mozilla

Security researcher miaubiz used the Address Sanitizer tool to discover a series critically rated of use-after-free, buffer overflow, and memory corruption issues in shipped software. These issues are potentially exploitable, allowing for remote code execution. We would also like to thank miaubiz...

DOMParser loads linked resources in extensions when parsing text/html — Mozilla

Security researcher vsemozhetbyt reported that when the DOMParser is used to parse text/html data in a Firefox extension, linked resources within this HTML data will be loaded. If the data being parsed in the extension is untrusted, it could lead to information leakage and can potentially be...

Insecure use of __android_log_print — Mozilla

Mozilla developer Blake Kaplan reported that androidlogprint is called insecurely in places. If a malicious web page used a dump statement with a specially crafted string, it can trigger a potentially exploitable crash...

Crash with WebGL content using textImage2D — Mozilla

Mozilla community member Ms2ger found an image rendering issue with WebGL when texImage2D uses use JSVALTOOBJECT on arbitrary objects. This can lead to a crash on a maliciously crafted web page. While there is no evidence that this is directly exploitable, there is a possibility of remote code...

Miscellaneous memory safety hazards (rv:3.0/1.9.2.18) — Mozilla

Mozilla developers identified and fixed several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be...

Integer overflow and arbitrary code execution in Array.reduceRight() — Mozilla

Security researchers Chris Rohlf and Yan Ivnitskiy of Matasano Security reported that when a JavaScript Array object had its length set to an extremely large value, the iteration of array elements that occurs when its reduceRight method was subsequently called could result in the execution of...

WebGLES vulnerabilities — Mozilla

Two crashes that could potentially be exploited to run malicious code were found in the WebGL feature and fixed in Firefox 4.0.1. In addition the WebGLES libraries could potentially be used to bypass a security feature of recent Windows versions. The WebGL feature was introduced in Firefox 4; old...

Incomplete fix for CVE-2010-0179 — Mozilla

Mozilla security researcher mozbugra4 reported that the fix for CVE-2010-0179 could be circumvented permitting the execution of arbitrary JavaScript with chrome privileges...

nsTreeSelection dangling pointer remote code execution vulnerability — Mozilla

Security researcher regenrecht reported via TippingPoint's Zero Day Initiative an integer overflow vulnerability in the implementation of the XUL element's selection attribute. When the size of a new selection is sufficiently large the integer used in calculating the length of the selection can...

Crashes with evidence of memory corruption (rv:1.9.2.4/ 1.9.1.10) — Mozilla

Mozilla developers identified and fixed several stability bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these crashes showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be...

XSS due to window.dialogArguments being readable cross-domain — Mozilla

Security researcher Hidetake Jo of Microsoft Vulnerability Research reported that the properties set on an object passed to showModalDialog were readable by the document contained in the dialog, even when the document was from a different domain. This is a violation of the same-origin policy and...

JavaScript chrome privilege escalation — Mozilla

Mozilla security researcher mozbugra4 reported a vulnerability which allows scripts from page content to run with elevated privileges. Using this vulnerability, an attacker could cause a chrome privileged object, such as the browser sidebar or the FeedWriter, to interact with web content in such ...

Security Vulnerabilities fixed in Firefox for Android 130.0.1 — Mozilla

Under certain conditions, an attacker with the ability to redirect users to a malicious site via an open redirect on a trusted site, may be able to spoof the address bar contents. This can lead to a malicious site to appear to have the same URL as the trusted site.This bug only affects Firefox fo...

Security Vulnerabilities fixed in Firefox ESR 102.11 — Mozilla

In multiple cases browser prompts could have been obscured by popups controlled by content. These could have led to potential user confusion and spoofing attacks. An out-of-bound read could have led to a crash in the RLBox Expat driver. A missing delay in popup notifications could have made it...

Security Vulnerabilities fixed in Thunderbird 78.5.1 — Mozilla

When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable...

Miscellaneous memory safety hazards (rv:47.0 / rv:45.2) — Mozilla

Mozilla developers and community members reported several memory safety bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these...