XSS encoding hazard with inline SVG — Mozilla

Security researcher Mario Heiderich reported that HTML-encoded entities were being improperly decoded when displayed inside SVG elements. This could lead to XSS attacks on sites relying on HTML encoding of user-supplied content...

Non-whitelisted site can trigger xpinstall — Mozilla

Mozilla security researcher mozbugra4 reported that it was possible for a non-whitelisted site to trigger an install dialog for add-ons and themes...

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...

Escalation of privilege through Java Embedding Plugin — Mozilla

David Remahl of Apple Product Security reported that the Java Embedding Plugin JEP shipped with the Mac OS X versions of Firefox could be exploited to obtain elevated access to resources on a user's system...

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...

Directory traversal in resource: protocol — Mozilla

Security researcher Soroush Dalili reported that the resource: protocol could be exploited to allow directory traversal on Windows and the potential loading of resources from non-permitted locations. The impact would depend on whether interesting files existed in predictable locations in a useful...

XSLT generate-id() function heap address leak — Mozilla

Chris Evans of the Chrome Security Team reported that the XSLT generate-id function returned a string that revealed a specific valid address of an object on the memory heap. It is possible that in some cases this address would be valuable information that could be used by an attacker while...

Information stealing via form history — Mozilla

Security researcher Paul Stone reported that a Java applet could be used to mimic interaction with form autocomplete controls and steal entries from the form history...

Multiple dangling pointer vulnerabilities — Mozilla

Security researcher regenrecht reported several dangling pointer vulnerabilities via TippingPoint's Zero Day Initiative...

Miscellaneous memory safety hazards (rv:2.0.1/ 1.9.2.17/ 1.9.1.19) — 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...

Update to HTTPS certificate blacklist — Mozilla

Several invalid HTTPS certificates were placed on the certificate blacklist to prevent their misuse...

Crash caused by corrupted JPEG image — Mozilla

Security researcher Jordi Chancel reported that a JPEG image could be constructed that would be decoded incorrectly, causing data to be written past the end of a buffer created to store the image. An attacker could potentially craft such an image that would cause malicious code to be stored in...

ParanoidFragmentSink allows javascript: URLs in chrome documents — Mozilla

Security researcher Roberto Suggi Liverani reported that ParanoidFragmentSink, a class used to sanitize potentially unsafe HTML for display, allows javascript: URLs and other inline JavaScript when the embedding document is a chrome document. While there are no unsafe uses of this class in any...

Memory corruption during text run construction (Windows) — Mozilla

Alex Miller reported that when very long strings were constructed and inserted into an HTML document, the browser would incorrectly construct the layout objects used to display the text. Under such conditions an incorrect length would be calculated for a text run resulting in too small of a memor...

Use-after-free error using Web Workers — Mozilla

Daniel Kozlowski reported that a JavaScript Worker could be used to keep a reference to an object that could be freed during garbage collection. Subsequent calls through this deleted reference could cause attacker-controlled memory to be executed on a victim's computer...

Buffer overflow in JavaScript atom map — Mozilla

Security researcher Christian Holler reported that the JavaScript engine's internal mapping of string values contained an error in cases where the number of values being stored was above 64K. In such cases an offset pointer was manually moved forwards and backwards to access the larger address...

Use-after-free error in JSON.stringify — Mozilla

Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that a method used by JSON.stringify contained a use-after-free error in which a currently in-use pointer was freed and subsequently dereferenced. This could lead to arbitrary code execution if an attacker was able to...

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...

Miscellaneous memory safety hazards (rv:1.9.2.14/ 1.9.1.17) — 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...

CSRF risk with plugins and 307 redirects — Mozilla

Independent security researcher Kuza55 and Microsoft security researcher Tom Gallagher reported that when plugin-initiated requests receive a 307 redirect response, the plugin is not notified and the request is forwarded to the new location. This is true even for cross-site redirects, so any cust...

Buffer overflow in JavaScript upvarMap — Mozilla

Security researcher Christian Holler reported that the JavaScript engine's internal memory mapping of non-local JS variables contained a buffer overflow which could potentially be used by an attacker to run arbitrary code on a victim's computer...

XSS hazard in multiple character encodings — Mozilla

Security researchers Yosuke Hasegawa and Masatoshi Kimura reported that the x-mac-arabic, x-mac-farsi and x-mac-hebrew character encodings are vulnerable to XSS attacks due to some characters being converted to angle brackets when displayed by the rendering engine. Sites using these character...

Location bar SSL spoofing using network error page — Mozilla

Google security researcher Michal Zalewski reported that when a window was opened to a site resulting in a network or certificate error page, the opening site could access the document inside the opened window and inject arbitrary content. An attacker could use this bug to spoof the location bar...

Integer overflow vulnerability in NewIdArray — Mozilla

Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that JavaScript arrays were vulnerable to an integer overflow vulnerability. The report demonstrated that an array could be constructed containing a very large number of items such that when memory was allocated to sto...

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...

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...

Chrome privilege escalation with window.open and <isindex> element — Mozilla

Security researcher echo reported that a web page could open a window with an about:blank location and then inject an element into that page which upon submission would redirect to a chrome: document. The effect of this defect was that the original page would wind up with a reference to a...

Add support for OTS font sanitizer — Mozilla

Mozilla added the OTS font sanitizing library to prevent downloadable fonts from exposing vulnerabilities in the underlying OS font code. This library mitigates against several issues independently reported by Red Hat Security Response Team member Marc Schoenefeld and Mozilla security researcher...

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...

Buffer overflow while line breaking after document.write with long string — Mozilla

Dirk Heinrich reported that on Windows platforms when document.write was called with a very long string a buffer overflow was caused in line breaking routines attempting to process the string for display. Such cases triggered an invalid read past the end of an array causing a crash which an...

Miscellaneous memory safety hazards (rv:1.9.2.13/ 1.9.1.16) — 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...

Java security bypass from LiveConnect loaded via data: URL meta refresh — Mozilla

Security researcher Gregory Fleischer reported that when a Java LiveConnect script was loaded via a data: URL which redirects via a meta refresh, then the resulting plugin object was created with the wrong security principal and thus received elevated privileges such as the abilities to read loca...

Heap buffer overflow mixing document.write and DOM insertion — Mozilla

Morten Kråkvik of Telenor SOC reported an exploit targeting particular versions of Firefox 3.6 on Windows XP that Telenor found while investigating an intrusion attempt on a customer network. The underlying vulnerability, however, was present on both the Firefox 3.5 and Firefox 3.6 development...

Miscellaneous memory safety hazards (rv:1.9.2.11/ 1.9.1.14) — 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...

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...

Buffer overflow and memory corruption using document.write — Mozilla

Security researcher Alexander Miller reported that passing an excessively long string to document.write could cause text rendering routines to end up in an inconsistent state with sections of stack memory being overwritten with the string data. An attacker could use this flaw to crash a victim's...

SSL wildcard certificate matching IP addresses — Mozilla

Security researcher Richard Moore reported that when an SSL certificate was created with a common name containing a wildcard followed by a partial IP address a valid SSL connection could be established with a server whose IP address matched the wildcard range by browsing directly to the IP addres...

Dangling pointer vulnerability in LookupGetterOrSetter — Mozilla

Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that when window.lookupGetter is called with no arguments the code assumes the top JavaScript stack value is a property name. Since there were no arguments passed into the function, the top value could represent...

Insecure Diffie-Hellman key exchange — Mozilla

Mozilla cryptographer Nelson Bolyard reported that the SSL implementation was permitting servers to use Diffie-Hellman Ephemeral mode DHE with too short of a minimum key length. DHE keys of such lengths are trivially breakable on modern hardware so SSL servers operating in this mode were providin...

Unsafe library loading vulnerabilities — Mozilla

Mozilla developer Ehsan Akhgari reported that a function used to load external libraries on Windows platforms was using a relative path to a DLL-loading application and was thus vulnerable to binary planting if an attacker was able to place an executable of the same name in the current working...

Use-after-free error in nsBarProp — Mozilla

Security researcher Sergey Glazunov reported that it was possible to access the locationbar property of a window object after it had been closed. Since the closed window's memory could have been subsequently reused by the system it was possible that an attempt to access the locationbar property...

Cross-site information disclosure via modal calls — Mozilla

Security researcher Eduardo Vela Nava reported that if a web page opened a new window and used a javascript: URL to make a modal call, such as alert, then subsequently navigated the page to a different domain, once the modal call returned the opener of the window could get access to objects in th...

Crash on Mac using fuzzed font in data: URL — Mozilla

Security researcher Marc Schoenefeld reported that a specially crafted font could be applied to a document and cause a crash on Mac systems. The crash showed signs of memory corruption and presumably could be used by an attacker to execute arbitrary code on a victim's computer...

Crash and remote code execution in normalizeDocument — Mozilla

Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that code used to normalize a document contained a logical flaw that could be leveraged to run arbitrary code. When the normalization code ran, a static count of the document's child nodes was used in the traversal, so...

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...

Dangling pointer vulnerability in nsTreeContentView — Mozilla

Security researcher regenrecht reported via TippingPoint's Zero Day Initiative that the implementation of XUL 's content view contains a dangling pointer vulnerability. One of the content view's methods for accessing the internal structure of the tree could be manipulated into removing a node pri...

Frameset integer overflow vulnerability — Mozilla

Security researcher Chris Rohlf of Matasano Security reported that the implementation of the HTML frameset element contained an integer overflow vulnerability. The code responsible for parsing the frameset columns used an 8-byte counter for the column numbers, so when a very large number of colum...

Miscellaneous memory safety hazards (rv:1.9.2.9/ 1.9.1.12) — 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...

Windows XP DLL loading vulnerability — Mozilla

Security researcher Haifei Li of FortiGuard Labs reported that Firefox could be used to load a malicious code library that had been planted on a victim's computer. Firefox attempts to load dwmapi.dll upon startup as part of its platform detection, so on systems that don't have this library, such ...

Dangling pointer vulnerability using DOM plugin array — Mozilla

Security researcher Sergey Glazunov reported a dangling pointer vulnerability in the implementation of navigator.plugins in which the navigator object could retain a pointer to the plugins array even after it had been destroyed. An attacker could potentially use this issue to crash the browser an...