Search plugin cross-site scripting — Mozilla

A malicious search plugin could run javascript in the context of the displayed page each time a search is run. This could be used to steal cookies or page contents, or issue commands to that site on the user's behalf. If the open page has elevated privileges about:plugins, about:config then the...

PLUGINSPAGE privileged javascript execution — Mozilla

When a webpage requires a plugin that is not installed the user can click to launch the Plugin Finder Service PFS to find an appropriate plugin. If the service does not have an appropriate plugin the EMBED tag is checked for a PLUGINSPAGE attribute, and if one is found the PFS dialog will contain...

Showing blocked javascript: popup uses wrong privilege context — Mozilla

When a popup is blocked the user is given the ability to open that one popup through the popup-blocking status bar icon and, in Firefox, through the infobar. If the popup URL were javascript: selecting "Show javascript:..." from the infobar or popup blocking status bar icon menus would run the...

Missing Install object instance checks — Mozilla

The native implementations of InstallTrigger and other XPInstall-related javascript objects did not properly validate that they were called on instances of the correct type. By passing other objects, even raw numbers, the javascript interpreter would jump to the wrong place in memory. Although no...

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...

Drag and drop loading of privileged XUL — Mozilla

A malicious page that could lure a user into dragging something such as a fake scrollbar can bypass the restriction on opening privileged XUL. The startup scripts in the XUL will run with enhanced privilege, though the actions taken upon merely opening most XUL are benign. So far no way to run...

Arbitrary code execution from Firefox sidebar panel — Mozilla

If a user bookmarked a malicious page as a Firefox sidebar panel that page could execute arbitrary programs by opening a privileged page and injecting javascript into it...

GIF heap overflow parsing Netscape extension 2 — Mozilla

An GIF processing error when parsing the obsolete Netscape extension 2 can lead to an exploitable heap overrun, allowing an attacker to run arbitrary code on the user's machine...

Image drag and drop executable spoofing — Mozilla

Images dragged and dropped from a webpage to the desktop preserved their original name and extension. If this were an executable extension then the file would be executed rather than opened in a media application...

HTTP auth prompt tab spoofing — Mozilla

The HTTP authentication prompt appears above the currently open tab regardless of which tab triggered it. A spoofer who could get a user to open a high value target in another tab might be able to capture the user's ID and password. HTTP auth dialogs are visually distinct from the web form logins...

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...

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...

Plugins can be used to load privileged content — Mozilla

Plugins such as flash can be used to load privileged content into a frame. Once loaded various spoofs can be applied to get the user to interact with the privileged content. Michael Krax's "Fireflashing" example demonstrates that an attacker can open about:config in a frame, hide it with an opaci...

Install source spoofing with user:pass@host — Mozilla

The installation confirmation dialog shows the source of the software. By adding a long, fake "user:pass" in front of the true hostname the user might be convinced to trust software that comes from an untrustworthy source. This is similar to attempts used in some phishing mail:...

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 ...

Spoofing download and security dialogs with overlapping windows — Mozilla

Michael Krax demonstrates that the download dialog and security dialogs can be spoofed by partially covering them with an overlapping window. Some users may not notice the OS window border and browser statusbar bisecting what appears to be a single dialog, and be convinced by the spoofing text of...

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...

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...

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...

Download dialog source spoofing — Mozilla

The true source of a download can be disguised by using a host name long enough that the most significant parts are truncated. Spoofing can be made even more convincing on windows if the subdomain labels contain a string of non-breaking space characters...

Internationalized Domain Name (IDN) homograph spoofing — Mozilla

Internationalized Domain Names IDN allow non-English speakers to use domains in their local language. Because many supported characters are similar to other if not identical in some fonts there is the possibility this could be used to construct perfect, indistinguishable phishing sites...

Cross-site scripting by dropping javascript: link on tab — Mozilla

Dropping a javascript: or data: link on a tab executes in the context of the site already loaded in the tab. If an attacker could convince a user to drag and drop such a link on a particular tab this could be used to steal information or credentials associated with the site in that tab...

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...

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...

Window Injection Spoofing — Mozilla

A website can inject content into a popup opened by another site if the target name of the popup window is known. An attacker who knows you are going to visit that other site could spoof the contents of the popup...

Browser responds to proxy auth request from non-proxy server (ssl/https) — Mozilla

If a proxy is configured the browser would respond to a 407 proxy auth request from any SSL-connected server rather than only responding to the configured proxy server. This could leak NTLM or SPNEGO credentials outside the organization...

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...

Opened attachments are temporarily saved world-readable — Mozilla

Mozilla software released after March 2004 saves some temporary files with world-readable permissions. In the browser this is primarily content fed to helper applications for example, PDF files, and in the mail clients it is attachments...

javascript: Livefeed bookmarks can steal cookies — Mozilla

Earlier versions of Firefox allowed javascript: and data: URLs as Livefeed bookmarks. When they updated the URL would be run in the context of the current page and could be used to steal cookies or data displayed on the page...

javascript: links in Thunderbird launch Internet Explorer — Mozilla

Clicking on javascript: links in Thunderbird launched the default handler for that scheme registered with the OS. On the Windows operating system Internet Explorer is the default handler for the javascript: scheme even when Firefox is the default browser...

Script-generated event can download without prompting — Mozilla

Script-generated click events were indistinguishable from true clicks. Combined with the Firefox Alt+click feature that downloads links to the default location without prompting this could be used by malicious sites to place executables or other malware onto a windows user's desktop without their...

Synthetic middle-click event can steal clipboard contents — Mozilla

Script-generated middle-click events can steal clipboard contents on systems where that action is a paste. Middle-click paste is the default behavior on Unix systems, and a hidden option elsewhere...

Secure site lock can be spoofed with view-source: — Mozilla

Kohei Yoshino reports the secure site lock icon can be spoofed by using a view-source: URL targeted at the secure site whose credentials you want to appropriate. An insecure page of the attackers choice can then be loaded while the lock icon shows the previous secure state...

Input stealing from other tabs — Mozilla

Jakob Balle of Secunia reported two vulnerabilities in windows with multiple tabs. Malicious content in a background tab can attempt to steal information intended for the topmost tab by popping up prompt dialog that appears to come from the trusted site, or by silently redirecting input focus to ...

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...

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...

Secure site lock can be spoofed with a binary download — Mozilla

While on an insecure page triggering a load of a binary file from a secure server will cause the SSL lock icon to appear. The certificate information is that of the binary file's host, while the location bar URL correctly shows the original insecure page...