1587 matches found
"Wrapped" javascript: urls bypass security checks — Mozilla
Some security checks intended to prevent script injection were incorrect and could be bypassed by wrapping a javascript: url in the view-source: pseudo-protocol. Michael Krax demonstrated that a variant of his favicon exploit could still execute arbitrary code, and the same technique could also b...
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...
Heap overflow possible in UTF8 to Unicode conversion — Mozilla
It is possible for a UTF8 string with invalid sequences to trigger a heap overflow of converted Unicode data. Exploitability would depend on the attackers ability to get the string into the buggy converter. General web content is converted elsewhere but we can't rule out the possibility of a...
XSLT can include stylesheets from arbitrary hosts — Mozilla
xsl:include and xsl:import can include XSLT stylesheets from arbitrary domains including those behind the user's firewall. This at least allows for existence checking of these files; it's not clear how much, if any, data could be extracted from arbitrary XML files...
Link opened in new tab can load a local file — Mozilla
Links with a custom getter and toString method can bypass checks intended to prevent web content from linking to local files and "chrome" URIs if the user can be convinced to middle-click or control-click to open it in a new tab. The browser's "same-origin" policy prevents the attacker's content...
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 Focus for iOS / Klar 151.3.1 — Mozilla
CVE-2026-11799: UXSS in Focus for iOS / Klar Webkit navigation Reporter Renwa Hiwa Impact high References Bug 1975667...
Security Vulnerabilities fixed in Firefox ESR 115.34 — Mozilla
Memory safety bugs present in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148. 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 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...
Security Vulnerabilities fixed in Thunderbird 139 — 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 Firefox ESR 115.23.1 — 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 138.0.1 — Mozilla
Thunderbird parses addresses in a way that can allow sender spoofing in case the server allows an invalid From address to be used. For example, if the From header contains an invalid value "Spoofed Name [email protected] [email protected]", Thunderbird treats [email protected] as the...
Security Vulnerabilities fixed in Firefox ESR 115.23 — Mozilla
Mozilla Firefox'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...
Security Vulnerabilities fixed in Thunderbird 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 Vulnerabilities fixed in Thunderbird 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...
Script access to .documentURI and .textContent in mail — Mozilla
Mozilla developer Boris Zbarsky reported that a malicious mail message might be able to glean personal information about the recipient from the mailbox URI such as computer account name if the mail recipient has enabled JavaScript in mail. If a malicious mail is forwarded "in-line" to a recipient...
Stored password corruption — Mozilla
Mozilla developer Justin Dolske discovered that malicious sites, upon a user saving his or her password, could inject newlines into Firefox's password store and corrupt saved passwords for other sites...
Exploitable crash in InstallVersion.compareTo — Mozilla
When InstallVersion.compareTo is passed an object rather than a string it assumed the object was another InstallVersion without verifying it. When passed a different kind of object the browser would generally crash with an access violation...
Autocomplete data leak — Mozilla
As users downarrow through autocomplete choices each is copied in turn into the input control. A malicious site could create a page that autocompletes some common data such as phone number or SSN and potentially convince a user to arrow through the values. Script on the page could watch the value...
Memory overwrite in string library — Mozilla
Daniel de Wildt discovered a memory handling flaw in Mozilla string classes that could overwrite memory at a fixed location if reallocation fails during string growth. This could theoretically lead to arbitrary code execution. Creating the exact conditions for exploitation--including running out ...
SSL "secure site" indicator spoofing — Mozilla
Various schemes were reported that could cause the "secure site" lock icon to appear and show certificate details for the wrong site. These could be used by phishers to make their spoofs look more legitimate, particularly in windows that hide the address bar showing the true location...
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 140.11 — Mozilla
Memory safety bugs present in Thunderbird 140.10 and Thunderbird 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 Thunderbird 140.10 and Thunderbird 150...
Security Vulnerabilities fixed in Firefox ESR 115.35.2 — 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 Thunderbird 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 Firefox 148.0.2 — Mozilla
Memory safety bugs present in Firefox 148.0.2. 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 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 115.33 — Mozilla
Memory safety bugs present in Firefox ESR 115.32, 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...
Security Vulnerabilities fixed in Thunderbird 140.6 — Mozilla
Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox 145 and Thunderbird 145. 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 Focus for iOS 132 — Mozilla
Focus was incorrectly allowing internal links to utilize the app scheme used for deeplinking, which could result in links potentially circumventing some URL safety checks...
Information disclosure via the High Resolution Time API — Mozilla
Security researchers Yossef Oren, Vasileios P. Kemerlis, Simha Sethumadhavan, Angelos D. Keromytis of Columbia University's Network Security Lab reported a method of using the High Resolution Time API for side channel attacks. This attack uses JavaScript loaded through a hostile web page to track...
Buffer length checks in MIME processing — Mozilla
As a follow-up to vulnerability reported in MFSA 2008-12 Mozilla has checked similar constructs in the rest of the MIME handling code. Although no further buffer overflows were found we changed several function calls to use safer versions of the string routines that will be more robust in the fac...
Firefox 1.0.7 / Mozilla Suite 1.7.12 Vulnerability Fixes — Mozilla
Fixes for multiple vulnerabilities with an overall severity of "critical" have been released in Mozilla Firefox 1.0.7 and the Mozilla Suite 1.7.12 Heap overrun in XBM image processing Critical Crash on "zero-width non-joiner" sequence Critical XMLHttpRequest header spoofing Moderate Object spoofi...
XHTML node spoofing — Mozilla
Parts of the browser UI relied too much on DOM node names without taking different namespaces into account and verifying that nodes really were of the expected type. An XHTML document could be used to create fake elements, for example, with content-defined properties that the browser would access...
Standalone applications can run arbitrary code through the browser — Mozilla
Several media players, for example Flash and QuickTime, support scripted content with the ability to open URLs in the default browser. The default behavior for Firefox was to replace the currently open browser window's content with the externally opened content. If the external URL was a...
Cross-site Scripting through global scope pollution — Mozilla
As you browse from site to site each new page should start with a clean slate. shutdown reports a technique that pollutes the global scope of a window in a way that persists from page to page. A malicious script could define a setter function for a variable known to be used by a popular site, and...
Download dialog spoofing using Content-Disposition header — Mozilla
Andreas Sandblad of Secunia Research demonstrated a method to spoof the download dialog for saving files by supplying a Content-Disposition header with a different extension than the extension visible in the link and download dialog. Users could be tricked into downloading a safe-looking file suc...
Unsafe /tmp/plugtmp directory exploitable to erase user's files — Mozilla
A predictable name is used for the plugin temporary directory. A malicious local user could symlink this to the victim's home directory and wait for the victim to run Firefox. When Firefox shuts down the victim's directory would be erased...
Security Vulnerabilities fixed in Firefox ESR 140.14 — Mozilla
Internally found bugs present in Firefox ESR 140.13, Firefox ESR 153.0 and Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. Internally found bugs present in...
Security Vulnerabilities fixed in Firefox 152.0.4 — Mozilla
Memory safety bugs present in Firefox 152.0.3. 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 115.35.1 — Mozilla
Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0 and Firefox 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...
Security Vulnerabilities fixed in Firefox 150.0.1 — Mozilla
Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0 and Firefox 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 Firefox ESR...
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 ESR 128.11 — 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 Firefox ESR 128.9 — Mozilla
JavaScript code running while transforming a document with the XSLTProcessor could lead to a use-after-free. A crafted URL containing specific Unicode characters could have hidden the true origin of the page, resulting in a potential spoofing attack. Memory safety bugs present in Firefox 136,...
Security Vulnerabilities fixed in Thunderbird ESR 128.7 — Mozilla
An attacker could have caused a use-after-free via crafted XSLT data, leading to a potentially exploitable crash. An attacker could have caused a use-after-free via the Custom Highlight API, leading to a potentially exploitable crash. A bug in WebAssembly code generation could have lead to a cras...
Security Vulnerabilities fixed in Firefox 134 — Mozilla
In resizeToAtLeast of SkRegion.cpp, there was a possible out of bounds write due to an integer overflow When redirecting to an invalid protocol scheme, an attacker could spoof the address bar. Note: This issue only affected Android operating systems. Other operating systems are unaffected. Under...
Security Vulnerabilities fixed in Firefox for iOS 133 — Mozilla
Accessing a non-secure HTTP site that uses a non-existent port may cause the SSL padlock icon in the location URL bar to, misleadingly, appear secure. Under certain circumstances, navigating to a webpage would result in the address missing from the location URL bar, making it unclear what the URL...