1596 matches found
Information stealing via local shortcut files — Mozilla
Security researcher Liu Die Yu of TopsecTianRongXin reported that locally saved .url shortcut files could be used to read information stored in the local cache. An attacker could use this vulnerability to steal information from a victim's browser cache if they were able to get the victim to...
Security Vulnerabilities fixed in Firefox 151.0.3 — Mozilla
CVE-2026-10701: Incorrect boundary conditions in the Graphics: Text component Reporter taiho kim Impact high References Bug 2038537 CVE-2026-10702: JIT miscompilation in the JavaScript Engine: JIT component Reporter Nebula Security Impact high References Bug 2040903...
Security Vulnerabilities fixed in Firefox ESR 102.9 — Mozilla
Sometimes, when invalidating JIT code while following an iterator, the newly generated code could be overwritten incorrectly. This could lead to a potentially exploitable crash. Dragging a URL from a cross-origin iframe that was removed during the drag could have led to user confusion and website...
Integer overflow in WebSockets during data buffering — Mozilla
Security researcher Samuel Groß reported an integer overflow error in WebSockets during data buffering on incoming packets when an allocated buffer is resized incorrectly. This results in the buffer array holding the data being shrunk, instead of grown, resulting in attacker controlled data being...
Favicon network connection can persist when page is closed — Mozilla
Security researcher Toni Huttunen reported that once the favicon is requested from a site, the remote server can keep the favicon network connection open even when the page is later closed. This allows a malicious site to continue to use this channel to send requests to the browser, leading to...
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...
Write to invalid HashMap entry through JavaScript.watch() — Mozilla
The CESG, the Information Security Arm of GCHQ, reported that the JavaScript .watch method could be used to overflow the 32-bit generation count of the underlying HashMap, resulting in a write to an invalid entry. Under the right conditions this write could lead to arbitrary code execution. The...
Out of Memory crash when parsing GIF format images — Mozilla
Security researcher Gustavo Grieco reported an out of memory crash when loading maliciously crafted GIF format images. Investigation of the issue determined that the root cause was an error in image parsing code during deinterlacing, leading to a potential integer overflow...
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...
Information disclosure through NTLM authentication — Mozilla
Security researcher Tim Brown reported that Firefox discloses the hostname and possibly the Windows domain through NTLM-based HTTP authentication when sending type 3 messages as part of the authentication exchange. This is because the Workstation field is populated with the hostname of the system...
Use-after-free in workers while using XMLHttpRequest — Mozilla
Security researcher Looben Yang used the Address Sanitizer tool to discover two related use-after-free vulnerabilities that occur when using XMLHttpRequest in concert with either shared or dedicated workers. These errors occur when the XMLHttpRequest object is attached to a worker but that object...
Privilege escalation through SVG navigation — Mozilla
Security researcher Mariusz Mlynski reported, through HP Zero Day Initiative's Pwn2Own contest, a method to run arbitrary scripts in a privileged context. This bypassed the same-origin policy protections by using a flaw in the processing of SVG format content navigation...
Read of uninitialized memory in Web Audio — Mozilla
Security researcher Holger Fuhrmannek used the used the Address Sanitizer tool to discover a crash in Web Audio while manipulating timelines. This allowed for the a small block of memory with an uninitialized pointer to be read. The crash it not exploitable...
XBL bindings accessible via improper CSS declarations — Mozilla
Security researcher Cody Crews reported a method to trigger chrome level XML Binding Language XBL bindings through web content. This was possible because some chrome accessible CSS stylesheets had their primary namespace improperly declared. When this occurred, it was possible to use these...
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...
Key pinning bypasses — Mozilla
Mozilla developer Patrick McManus reported a method to use SPDY or HTTP/2 connection coalescing to bypass key pinning on different sites that resolve to the same IP address.This could allow the use of a fraudulent certificate when a saved pin for that subdomain should have prevented the connectio...
Privilege escalation through Web Notification API — Mozilla
Security researcher Mariusz Mlynski discovered an issue where sites that have been given notification permissions by a user can bypass security checks on source components for the Web Notification API. This allows for script to be run in a privileged context through notifications, leading to...
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...
onbeforeunload and Javascript navigation DOS — Mozilla
Security researchers Tim Philipp Schäfers and Sebastian Neef, the team of Internetwache.org, reported a mechanism using JavaScript onbeforeunload events with page navigation to prevent users from closing a malicious page's tab and causing the browser to become unresponsive. This allows for a deni...
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...
Memory corruption found using Address Sanitizer — Mozilla
Security researcher Abhishek Arya Inferno of the Google Chrome Security Team used the Address Sanitizer tool to discover a series of use-after-free problems rated critical as security issues in shipped software. Some of these issues are potentially exploitable, allowing for remote code execution...
Privileged access for content level constructor — Mozilla
Security researcher Cody Crews reported a method to call a content level constructor that allows for this constructor to have chrome privileged access. This affects chrome object wrappers COW and allows for write actions on objects when only read actions should be allowed. This can lead to...
File input control has access to full path — Mozilla
Mozilla security researcher mozbugra4 reported a mechanism to exploit the control when set to the file type in order to get the full path. This can lead to information leakage and could be combined with other exploits to target attacks on the local file system...
Out-of-bounds write in Cairo library — Mozilla
Security researcher Abhishek Arya Inferno of the Google Chrome Security Team used the Address Sanitizer tool to discover an out-of-bounds write in Cairo graphics library. When certain values are passed to it during rendering, Cairo attempts to use negative boundaries or sizes for boxes, leading t...
Memory corruption in XBL with XML bindings containing SVG — Mozilla
Security researcher Sviatoslav Chagaev reported that when using an XBL file containing multiple XML bindings with SVG content, a memory corruption can occur. In concern with remote XUL, this can lead to an exploitable crash...
Address space layout leaked in XBL objects — Mozilla
Mozilla security researcher Jesse Ruderman discovered that using the toString function of XBL objects can lead to inappropriate information leakage by revealing the address space layout instead of just the ID of the object. This layout information could potentially be used to bypass ASLR and othe...
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...
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...
Escalation of privilege with Javascript: URL as home page — Mozilla
Security researcher Mariusz Mlynski reported that an attacker able to convince a potential victim to set a new home page by dragging a link to the "home" button can set that user's home page to a javascript: URL. Once this is done the attacker's page can cause repeated crashes of the browser,...
Recursive eval call causes confirm dialogs to evaluate to true — Mozilla
Security researcher Zach Hoffman reported that a recursive call to eval wrapped in a try/catch statement places the browser into a inconsistent state. Any dialog box opened in this state is displayed without text and with non-functioning buttons. Closing the window causes the dialog to evaluate t...
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...
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...
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...
Content-Disposition: attachment ignored if Content-Type: multipart also present — Mozilla
Security researcher Ilja van Sprundel of IOActive reported that the Content-Disposition: attachment HTTP header was ignored when Content-Type: multipart was also present. This issue could potentially lead to XSS problems in sites that allow users to upload arbitrary files and specify a Content-Ty...
Security Vulnerabilities fixed in Firefox ESR 91.12 — Mozilla
When combining CSS properties for overflow and transform, the mouse cursor could interact with different coordinates than displayed. When visiting directory listings for chrome:// URLs as source text, some parameters were reflected...
Security Vulnerabilities fixed in Thunderbird 78.4 — Mozilla
A use-after-free bug in the usersctp library was reported upstream. We assume this could have led to memory corruption and a potentially exploitable crash. Mozilla developers and community members Jason Kratzer, Simon Giesecke, Philipp, and Christian Holler reported memory safety bugs present in...
Security Vulnerabilities fixed in Firefox ESR 68.10 — Mozilla
Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in memory corruption and a potentially exploitable crash.Note: this issue only affects Firefox on ARM64 platforms. Manipulating individual parts of a URL object could have caused an...
Stack underflow during 2D graphics rendering — Mozilla
Georg Koppen of the Tor Project used the Address Sanitizer tool to discover a stack buffer underflow when calculating clipping regions in 2D graphics. This results in a potentially exploitable crash...
Addressbar spoofing attacks — Mozilla
Security researcher Jordi Chancel reported two issues involving addressbar spoofing...
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...
Buffer overflow during image interactions in canvas — Mozilla
Security researcher Looben Yang reported a buffer overflow in the JPEGEncoder function during script interactions with a canvas element. This is caused by a race condition and incorrectly matched sizes following image interactions. This leads to a potentially exploitable crash...
Memory safety errors in libGLES in the ANGLE graphics library — Mozilla
Security researcher Ronald Crane reported two issues in the libGLES portions of the ANGLE graphics library, used for WebGL and OpenGL content on Windows systems. The first of these is a missing bounds check leading to memory safety errors when manipulating shaders which could result in the writin...
Crash when using debugger with SavedStacks in JavaScript — Mozilla
Security researcher Spandan Veggalam reported a crash while using the debugger API with SavedStacks in JavaScript. This crash can only occurs when the debugger is in use but may be potentially exploitable...
Miscellaneous memory safety hazards (rv:40.0 / rv:38.2) — 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 due to Media Decoder Thread creation during shutdown — Mozilla
Security researchers Tyson Smith and Jesse Schwartzentruber reported a use-after-free during the shutdown process. This was caused by a race condition when media decoder threads are created during the shutdown process in some circumstances. This leads to a potentially exploitable crash when...
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...
Malicious WebGL content crash when writing strings — Mozilla
Security researcher Daniele Di Proietto discovered that when WebGL content crafted in a specific manner wrote strings, it would cause a crash when this content was run...
TLS TURN and STUN connections silently fail to simple TCP connections — Mozilla
Security researcher Alexander Kolesnik reported while the Mozilla platform does not yet support TLS connections to TURN and STUN servers, the WebRTC implementation would accept turns: and stuns: URIs and then attempt plaintext connections to the servers when these were used. This can lead to...
Buffer overflow during CSS restyling — Mozilla
Security researcher Atte Kettunen used the Address Sanitizer tool to discover an out-of-bounds read during the application of restyling and reflowing changes of web content using CSS. This results in a potentially exploitable crash...