Use-after-free error with nsDOMAttribute MutationObserver — Mozilla

Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that a nsDOMAttribute node can be modified without informing the iterator object responsible for various DOM traversals. This flaw could lead to a inconsistent state where the iterator points to an object it believes i...

Dangling pointer crash regression from plugin parameter array fix — Mozilla

Mozilla developer Daniel Holbert reported that the fix to the plugin parameter array crash that was fixed in Firefox 3.6.7 caused a crash showing signs of memory corruption. In certain circumstances, properties in the plugin instance's parameter array could be freed prematurely leaving a dangling...

Crash with recursive web-worker calls — Mozilla

Security researcher Orlando Berrera of Sec Theory reported that recursive creation of JavaScript web-workers can be used to create a set of objects whose memory could be freed prior to their use. These conditions often result in a crash which could potentially be used by an attacker to run...

Data corruption with SOCKS5 reply containing DNS name longer than 15 characters — Mozilla

Andrej Andolsek reported that when Firefox receives a reply from a SOCKS5 proxy which contains a DNS name longer than 15 characters, the subsequent data stream in the response can become corrupted. There was no evidence of memory corruption, however, and the severity of the issue was determined t...

User tracking via XUL persist attribute — Mozilla

Security researcher Hish reported that the persist attribute in XUL elements can be used to store cookie-like information on a user's computer which could later be read by a website. This creates a privacy issue for users who have a non-standard cookie preference and wish to prevent sites from...

Information stealing via loadBindingDocument — Mozilla

Mozilla developer Boris Zbarsky reported that XBL bindings could be used to read data from other domains, a violation of the same-origin policy. The severity of this issue was determined to be moderate due to several mitigating factors:...

Arbitrary code execution via Flash Player dynamic module unloading — Mozilla

An anonymous security researcher reported via TippingPoint's Zero Day Initiative that insufficient checks were being performed to test whether the Flash module was properly dynamically unloaded. The researcher demonstrated that a SWF file which dynamically unloads itself from an outside JavaScrip...

Memory corruption with simultaneous events — Mozilla

Secunia Research has discovered a vulnerability in Mozilla Firefox 1.5 branch, which can be exploited by malicious people to compromise a user's system...

Remote compromise via content-defined setter on object prototypes — Mozilla

Paul Nickerson discovered that content-defined setters on an object prototype were getting called by privileged UI code, and mozbugra4 was able to develop an exploit PoC that demonstrated that the higher privilege level could be passed along to the content-defined attack code...

Spoofing with translucent windows — Mozilla

An interaction between XUL content windows and the new faster history mechanism in Firefox 1.5 caused those windows to become translucent. This could be used to construct spoofs that could trick users into interacting with browser UI they can't see. It's possible a clever game-type presentation...

Heap overrun handling malicious news: URL — Mozilla

Maurycy Prodeus of iSEC Security Research reports a heap overrun in processing certain news: URLs. Thunderbird and the Mozilla Suite are affected; Firefox does not support the news: scheme...

Security Vulnerabilities fixed in Thunderbird 150.0.2 — Mozilla

Memory safety bugs present in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. Memory safety bugs present in Thunderbird 150.0.1. Some of...

Security Vulnerabilities fixed in Firefox 139.0.4 — Mozilla

Certain canvas operations could have lead to memory corruption. An integer overflow was present in OrderedHashTable used by the JavaScript engine...

Security Vulnerabilities fixed in Firefox ESR 128.10.1 — Mozilla

An attacker was able to perform an out-of-bounds read or write on a JavaScript Promise object. An attacker was able to perform an out-of-bounds read or write on a JavaScript object by confusing array index sizes...

Security Vulnerabilities fixed in Thunderbird 128.10 — Mozilla

Thunderbird's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking behavior. By injecting code into the user-privileged process, an attacker could bypass intended access controls, allowing SYSTEM-level file operations...

chrome: scheme loading remote content — Mozilla

Benjamin Smedberg discovered that chrome URL's could be made to reference remote files, which would run scripts with full privilege. There is no known way for web content to successfully load a chrome: url, but if a user could be convinced to do so manually perhaps by copying a link and pasting i...

Security Vulnerabilities fixed in Firefox for iOS 152.4 — Mozilla

Pages with malicious titles could potentially allow saved PDF content to overwrite PDF files or bundled content within the Firefox for iOS application sandbox...

Security Vulnerabilities fixed in Thunderbird 152 — Mozilla

Memory safety bugs present in Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11,...

Security Vulnerabilities fixed in Thunderbird 140.10.2 — Mozilla

Memory safety bugs present in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code...

Security Vulnerabilities fixed in Firefox 148 — Mozilla

Memory safety bugs present in Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7,...

Security Vulnerabilities fixed in Firefox ESR 115.24 — Mozilla

A double-free could have occurred in vpxcodecencinitmulti after a failed allocation when initializing the encoder for WebRTC. This could have caused memory corruption and a potentially exploitable crash. Error handling for script execution was incorrectly isolated from web content, which could ha...

Security Vulnerabilities fixed in Thunderbird 137 — Mozilla

JavaScript code running while transforming a document with the XSLTProcessor could lead to a use-after-free. An attacker could read 32 bits of values spilled onto the stack in a JIT compiled function. Leaking of file descriptors from the fork server to web content processes could allow for...

Security Vulnerabilities fixed in Firefox 137 — Mozilla

JavaScript code running while transforming a document with the XSLTProcessor could lead to a use-after-free. An attacker could read 32 bits of values spilled onto the stack in a JIT compiled function. Leaking of file descriptors from the fork server to web content processes could allow for...

Security Vulnerabilities fixed in Firefox 135.0.1 — Mozilla

Memory safety bugs present in Firefox 135. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code...

Security Vulnerabilities fixed in Firefox for iOS 134 — Mozilla

Opening Javascript links in a new tab via long-press in the Firefox iOS client could result in a malicious script spoofing the URL of the new tab. Long hostnames in URLs could be leveraged to obscure the actual host of the website or spoof the website address...

Security Vulnerabilities fixed in Thunderbird 128.5 — Mozilla

Certain WebGL operations on Apple silicon M series devices could have lead to an out-of-bounds write and memory corruption due to a flaw in Apple's GPU driver. This bug only affected the application on Apple M series hardware. Other platforms were unaffected. An attacker could cause a select...

Security Vulnerabilities fixed in Firefox ESR 128.4 — Mozilla

A permission leak could have occurred from a trusted site to an untrusted site via embed or object elements. An attacker could have caused a use-after-free when accessibility was enabled, leading to a potentially exploitable crash. The origin of an external protocol handler prompt could have been...

Security Vulnerability fixed in Firefox 131.0.3 — Mozilla

When manipulating the selection node cache, an attacker may have been able to cause unexpected behavior, potentially leading to an exploitable crash...

focus() behavior can be used to inject or steal keystrokes — Mozilla

Google security researcher Michal Zalewski reported that focus could be used to change a user's cursor focus while they are typing, potentially directing their keyboard input to an unintended location. This behavior was also present across origins when content from one domain was embedded within...

Arbitrary socket connections with Java LiveConnect on Mac OS X — Mozilla

Security researcher Gregory Fleischer reported a vulnerability in the way Mozilla indicates the origin of a document to the Java Embedding Plugin JEP that ships with Firefox on Mac OS X. This vulnerability could allow a malicious Java applet to bypass the same-origin policy and create arbitrary...

Code execution via javascript: IconURL — Mozilla

Two vulnerabilities found in Mozilla Firefox 1.0.3 when combined allow an attacker to run arbitrary code. The Mozilla Suite version 1.7.7 is only partially vulnerable...

Overwrite arbitrary files downloading .lnk twice — Mozilla

If a windows user can be convinced to download a .lnk file twice to the same location an attacker can overwrite essentially delete arbitrary files on the user's machine: the file referenced by the first .lnk will be overwritten by the second download rather than replacing the .lnk itself. On some...

Mail responds to cookie requests — Mozilla

Mozilla mail clients from March to December 2004 responded to cookie requests accompanying content loaded over HTTP, ignoring the setting of the preference "network.cookie.disableCookieForMailNews" disabled cookies are the default in mail...

Security Vulnerabilities fixed in Firefox 152 — Mozilla

Memory safety bugs present in Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11,...

Security Vulnerabilities fixed in Firefox ESR 140.10.2 — Mozilla

Memory safety bugs present in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code...

Security Vulnerabilities fixed in Firefox ESR 115.29 — Mozilla

A compromised web process was able to trigger out of bounds reads and writes in a more privileged process using manipulated WebGL textures. A compromised web process using malicious IPC messages could have caused the privileged browser process to reveal blocks of its memory to the compromised...

Security Vulnerabilities fixed in Thunderbird 136 — Mozilla

Certain crafted MIME email messages that claimed to contain an encrypted OpenPGP message, which instead contained an OpenPGP signed message, were wrongly shown as being encrypted. When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could hav...

Security Vulnerabilities fixed in Firefox for iOS 136 — Mozilla

Malicious websites utilizing a server-side redirect to an internal error page could result in a spoofed website URL Websites redirecting to a non-HTTP scheme URL could allow a website address to be spoofed for a malicious page Scanning certain QR codes that included text with a website URL could...

Security Vulnerabilities fixed in Firefox ESR 128.3 — Mozilla

A compromised content process could have allowed for the arbitrary loading of cross-origin pages. An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the resource://pdf.js origin. This could allow them to access cross-origin PDF content. This access i...

Security Vulnerabilities fixed in Focus for iOS 122 — Mozilla

An attacker could have executed unauthorized scripts on top origin sites using a JavaScript URI when opening an external URL with a custom Firefox scheme and a timeout race condition...

XBM image uninitialized memory reading — Mozilla

Security researcher Billy Hoffman discovered a bug in the XBM decoder that allowed random small chunks of uninitialized memory to be read. The severity of this bug was low and did not appear to cause any memory corruption...

IDN heap overrun using soft-hyphens — Mozilla

Tom Ferris reported a Firefox crash when processing a domain name consisting solely of soft-hyphen characters. This is due to a heap overrun triggered when Internationalized Domain Name IDN processing results in an empty string after removing non-mapping characters such as soft-hyphens. This...

Arbitrary code execution from Firefox sidebar panel II — Mozilla

Sites can use the search target to open links in the Firefox sidebar. Two missing security checks allow malicious scripts to first open a privileged page such as about:config and then inject script using a javascript: url. This could be used to install malicious code or steal data without user...

Security Vulnerabilities fixed in Firefox ESR 140.11 — Mozilla

Memory safety bugs present in Firefox ESR 140.10 and Firefox 150. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. Memory safety bugs present in Firefox ESR 115.35, Firefox ESR 140.10 and...

Security Vulnerabilities fixed in Thunderbird 150.0.1 — Mozilla

Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. Memory safety bugs present in Thunderbird ESR 140.10.0 and...

Security Vulnerabilities fixed in Firefox ESR 140.10 — Mozilla

Memory safety bugs present in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. Memory safety...

Security Vulnerabilities fixed in Focus for iOS 148.2 — Mozilla

Malicious scripts could display attacker-controlled web content under spoofed domains in Focus for iOS by stalling a self navigation to an invalid port and triggering an iframe redirect, causing the UI to display a trusted domain without user interaction...

Security Vulnerabilities fixed in Firefox ESR 140.8 — Mozilla

Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. Memory safety bugs present in...

Security Vulnerabilities fixed in Firefox 146.0.1 — Mozilla

Memory safety bugs present in Firefox 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code...

Security Vulnerabilities fixed in Firefox for iOS 144.0 — Mozilla

Unicode RTLO characters could allow malicious websites to spoof filenames in the downloads UI for Firefox for iOS, potentially tricking users into saving files of an unexpected file type...