1587 matches found
Phishing on HTTPS connection through malicious proxy — Mozilla
Google security researcher Michal Zalewski reported an issue where the browser displayed the content of a proxy's 407 response if a user canceled the proxy's authentication prompt. In this circumstance, the addressbar will continue to show the requested site's address, including HTTPS addresses...
Privacy leak in JavaScript Workers — Mozilla
Mozilla security researcher Frederik Braun discovered that since Firefox 15 the file system location of the active browser profile was available to JavaScript workers. While not dangerous by itself, this could potentially be combined with other vulnerabilities to target the profile in an attack...
Use-after-free, out of bounds read, and buffer overflow issues 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, out of bounds read, and buffer overflow problems rated as low to critical security issues in shipped software. Some of these issues are potentially...
Use-after-free in nsImageLoadingContent — Mozilla
Security researcher Nils reported a use-after-free in nsImageLoadingContent when content script is executed. This could allow for arbitrary code execution...
Wrapped WebIDL objects can be wrapped again — Mozilla
Mozilla developer Boris Zbarsky reported that in some circumstances a wrapped WebIDL object can be wrapped multiple times, overwriting the existing wrapped state. This could lead to an exploitable condition in rare cases...
Use-after-free in Javascript Proxy objects — Mozilla
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Chrome Object Wrapper (COW) bypass through changing prototype — Mozilla
Security researcher Mariusz Mlynski reported that it is possible to change the prototype of an object and bypass Chrome Object Wrappers COW to gain access to chrome privileged functions. This could allow for arbitrary code execution...
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...
Compartment mismatch with quickstubs returned values — Mozilla
Mozilla developer Boris Zbarsky reported reported a problem where jsval-returning quickstubs fail to wrap their return values, causing a compartment mismatch. This mismatch can cause garbage collection to occur incorrectly and lead to a potentially exploitable crash...
Use-after-free in Vibrate — Mozilla
Security researcher regenrecht reported, via TippingPoint's Zero Day Initiative, a use-after-free using the domDoc pointer within Vibrate library. This can lead to arbitrary code execution when exploited...
Buffer Overflow in Canvas — Mozilla
Security researcher miaubiz used the Address Sanitizer tool to discover a buffer overflow in Canvas when specific bad height and width values were given through HTML. This could lead to a potentially exploitable crash...
Mis-issued TURKTRUST certificates — Mozilla
Google reported to Mozilla that TURKTRUST, a certificate authority in Mozilla’s root program, had mis-issued two intermediate certificates to customers. The issue was not specific to Firefox but there was evidence that one of the certificates was used for man-in-the-middle MITM traffic management...
Use-after-free in ListenerManager — Mozilla
Security researcher regenrecht reported, via TippingPoint's Zero Day Initiative, a use-after-free within the ListenerManager when garbage collection is forced after data in listener objects have been allocated in some circumstances. This results in a use-after-free which can lead to arbitrary cod...
Buffer overflow in Javascript string concatenation — Mozilla
Security researcher pakt reported a flaw via TippingPoint's Zero Day Initiative that an integer overflow is possible when calculating the length for a Javascript string concatenation, which is then used for memory allocation. This results in a buffer overflow, leading to a potentially exploitable...
Crash due to handling of SSL on threads — Mozilla
Mozilla community member Jerry Baker reported a crashing issue found through Thunderbird when downloading messages over a Secure Sockets Layer SSL connection. This was caused by a bug in the networking code assuming that secure connections were entirely handled on the socket transport thread when...
Miscellaneous memory safety hazards (rv:18.0/ rv:10.0.12 / rv:17.0.2) — 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...
AutoWrapperChanger fails to keep objects alive during garbage collection — Mozilla
Mozilla developer Olli Pettay discovered that the AutoWrapperChanger class fails to keep some javascript objects alive during garbage collection. This can lead to an exploitable crash allowing for arbitrary code execution...
Privilege escalation through plugin objects — Mozilla
Security researcher Mariusz Mlynski reported that it is possible to open a chrome privileged web page through plugin objects through interaction with SVG elements. This could allow for arbitrary code execution...
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...
Event manipulation in plugin handler to bypass same-origin policy — Mozilla
Mozilla security researcher Jesse Ruderman reported that events in the plugin handler can be manipulated by web content to bypass same-origin policy SOP restrictions. This can allow for clickjacking on malicious web pages...
Use-after-free when displaying table with many columns and column groups — Mozilla
Using the Address Sanitizer tool, security researcher Atte Kettunen from OUSPG discovered that the combination of large numbers of columns and column groups in a table could cause the array containing the columns during rendering to overwrite itself. This can lead to a user-after-free causing a...
Use-after-free in serializeToStream — Mozilla
Security researcher regenrecht reported, via TippingPoint's Zero Day Initiative, a use-after-free in XMLSerializer by the exposing of serializeToStream to web content. This can lead to arbitrary code execution when exploited...
Touch events are shared across iframes — Mozilla
Mozilla developer Wesley Johnston reported that when there are two or more iframes on the same HTML page, an iframe is able to see the touch events and their targets that occur within the other iframes on the page. If the iframes are from the same origin, they can also access the properties and...
Use-after-free and buffer overflow issues found using Address Sanitizer — Mozilla
Security researcher Abhishek Arya Inferno of the Google Chrome Security Team discovered a series critically rated of use-after-free, out of bounds read, and buffer overflow issues using the Address Sanitizer tool in shipped software. These issues are potentially exploitable, allowing for remote...
URL spoofing in addressbar during page loads — Mozilla
Security researcher Masato Kinugawa found a flaw in which the displayed URL values within the addressbar can be spoofed by a page during loading. This allows for phishing attacks where a malicious page can spoof the identify of another site...
Use-after-free and buffer overflow issues found using Address Sanitizer — Mozilla
Security researcher Abhishek Arya Inferno of the Google Chrome Security Team discovered a series critically rated of use-after-free and buffer overflow issues using the Address Sanitizer tool in shipped software. These issues are potentially exploitable, allowing for remote code execution. We wou...
evalInSanbox location context incorrectly applied — Mozilla
Mozilla security researcher mozbugra4 reported that if code executed by the evalInSandbox function sets location.href, it can get the wrong subject principal for the URL check, ignoring the sandbox's Javascript context and gaining the context of evalInSandbox object. This can lead to malicious we...
Javascript: URLs run in privileged context on New Tab page — Mozilla
Security researcher [email protected] reported that if a javascript: URL is selected from the list of Firefox "new tab" page, the script will inherit the privileges of the privileged "new tab" page. This allows for the execution of locally installed programs if a user can be convinced to save a...
Memory corruption in str_unescape — Mozilla
Security researcher Scott Bell of Security-Assessment.com used the Address Sanitizer tool to discover a memory corruption in strunescape in the Javascript engine. This could potentially lead to arbitrary code execution...
Crash when combining SVG text on path with CSS — Mozilla
Security researcher Jonathan Stephens discovered that combining SVG text on a path with the setting of CSS properties could lead to a potentially exploitable crash...
Frames can shadow top.location — Mozilla
Security researcher Mariusz Mlynski reported that the location property can be accessed by binary plugins through top.location with a frame whose name attribute's value is set to "top". This can allow for possible cross-site scripting XSS attacks through plugins...
XMLHttpRequest inherits incorrect principal within sandbox — Mozilla
Mozilla developer Gabor Krizsanits discovered that XMLHttpRequest objects created within sandboxes have the system principal instead of the sandbox principal. This can lead to cross-site request forgery CSRF or information theft via an add-on running untrusted code in a sandbox...
Buffer overflow while rendering GIF images — Mozilla
Security researcher Atte Kettunen from OUSPG used the Address Sanitizer tool to discover a buffer overflow while rendering GIF format images. This issue is potentially exploitable and could lead to arbitrary code execution...
CSS and HTML injection through Style Inspector — Mozilla
Security researcher Mariusz Mlynski reported that when a maliciously crafted stylesheet is inspected in the Style Inspector, HTML and CSS can run in a chrome privileged context without being properly sanitized first. This can lead to arbitrary code execution...
Script entered into Developer Toolbar runs with chrome privileges — Mozilla
Security researcher Masato Kinugawa reported that when script is entered into the Developer Toolbar, it runs in a chrome privileged context. This allows for arbitrary code execution or cross-site scripting XSS if a user can be convinced to paste malicious code into the Developer Toolbar...
Improper character decoding in HZ-GB-2312 charset — Mozilla
Security researcher Masato Kinugawa found when HZ-GB-2312 charset encoding is used for text, the "" character will destroy another character near the chunk delimiter. This can lead to a cross-site scripting XSS attack in pages encoded in HZ-GB-2312...
XrayWrappers exposes chrome-only properties when not in chrome compartment — Mozilla
Mozilla developer Peter Van der Beken discovered that same-origin XrayWrappers expose chrome-only properties even when not in a chrome compartment. This can allow web content to get properties of DOM objects that are intended to be chrome-only...
Firefox installer DLL hijacking — Mozilla
Security researcher Robert Kugler reported that when a specifically named DLL file on a Windows computer is placed in the default downloads directory with the Firefox installer, the Firefox installer will load this DLL when it is launched. In circumstances where the installer is run by an...
Miscellaneous memory safety hazards (rv:17.0/ rv:10.0.11) — 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...
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...
Improper security filtering for cross-origin wrappers — Mozilla
Mozilla developer Bobby Holley reported that security wrappers filter at the time of property access, but once a function is returned, the caller can use this function without further security checks. This affects cross-origin wrappers, allowing for write actions on objects when only read actions...
Fixes for Location object issues — Mozilla
Mozilla has fixed a number of issues related to the Location object in order to enhance overall security. Details for each of the current fixed issues are below...
Miscellaneous memory safety hazards (rv:16.0.1) — Mozilla
Mozilla developers identified and fixed two top crashing bugs in the browser engine used in Firefox and other Mozilla-based products. These bugs showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be exploited to ru...
defaultValue security checks not applied — Mozilla
Mozilla security researcher mozbugra4 reported a regression where security wrappers are unwrapped without doing a security check in defaultValue. This can allow for improper access to the Location object. In versions 15 and earlier of affected products, there was also the potential for arbitrary...
top object and location property accessible by plugins — Mozilla
Security researcher Mariusz Mlynski reported that the location property can be accessed by binary plugins through top.location and top can be shadowed by Object.defineProperty as well. This can allow for possible cross-site scripting XSS attacks through plugins...
Some DOMWindowUtils methods bypass security checks — Mozilla
Mozilla developer Johnny Stenback discovered that several methods of a feature used for testing DOMWindowUtils are not protected by existing security checks, allowing these methods to be called through script by web pages. This was addressed by adding the existing security checks to these methods...
Heap memory corruption issues found using Address Sanitizer — Mozilla
Security researcher Atte Kettunen from OUSPG reported several heap memory corruption issues found using the Address Sanitizer tool. These issues are potentially exploitable, allowing for remote code execution...
Spoofing and script injection through location.hash — Mozilla
Security researcher Mariusz Mlynski reported an issue with spoofing of the location property. In this issue, writes to location.hash can be used in concert with scripted history navigation to cause a specific website to be loaded into the history object. The baseURI can then be changed to this...
GetProperty function can bypass security checks — Mozilla
Mozilla community member Alice White reported that when the GetProperty function is invoked through JSAPI, security checking can be bypassed when getting cross-origin properties. This potentially allowed for arbitrary code execution...
Chrome Object Wrapper (COW) does not disallow access to privileged functions or properties — Mozilla
Security researcher Mariusz Mlynski reported that when InstallTrigger fails, it throws an error wrapped in a Chrome Object Wrapper COW that fails to specify exposed properties. These can then be added to the resulting object by an attacker, allowing access to chrome privileged functions through...