1580 matches found
Crash scaling <video> to extreme sizes — Mozilla
sczimmer reported a crash when scaling an OGG element to extreme sizes...
Security Vulnerabilities fixed in Firefox 124 — Mozilla
An attacker could have leveraged the Windows Error Reporter to run arbitrary code on the system escaping the sandbox. Note: This issue only affected Windows operating systems. Other operating systems are unaffected. Passing invalid data could have led to invalid wasm values being created, such as...
Security Vulnerabilities fixed in Thunderbird 78.1 — Mozilla
By observing the stack trace for JavaScript errors in web workers, it was possible to leak the result of a cross-origin redirect. This applied only to content that can be parsed as script. WebRTC used the memory address of a class instance as a connection identifier. Unfortunately, this value is...
Security Vulnerabilities fixed in Thunderbird 68.7.0 — Mozilla
Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-free. Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. When reading from areas partially or fully outside the source resource with WebGL's...
Vulnerabilities found through code inspection — Mozilla
Security researcher Ronald Crane reported three vulnerabilities affecting released code that were found through code inspection. These included a buffer overflow in the ANGLE graphics library and two issues of missing status checks in SVG rendering and during cryptographic key manipulation. These...
Privilege escalation through internal workers — Mozilla
Mozilla community member Jonas Jenwald reported broken behavior in Mozilla's PDF.js PDF file viewer which led to the discovery that internal Workers were incorrectly executed with high privilege. If this flaw were combined with a separate vulnerability allowing for same-origin policy violation, i...
Memory corruption due to multipart/x-mixed-replace images — Mozilla
Security researcher Jordi Chancel reported a crash on multipart/x-mixed-replace images due to memory corruption...
Security vulnerabilities fixed in Thunderbird 45.7 — Mozilla
JIT code allocation can allow for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. Use-after-free while manipulating XSL in XSLT documents Hashed codes of JavaScript objects are shared between pages. This allows for pointer leaks because an object’s address can...
Addressbar spoofing though the SELECT element — Mozilla
Security researcher Jordi Chancel reported a method to spoof the contents of the addressbar. This uses a persistent menu within a element, which acts as a container for HTML content and can be placed in an arbitrary location. When placed over the addressbar, this can mask the true site URL,...
Vulnerabilities found through code inspection — Mozilla
Security researcher Ronald Crane reported seven vulnerabilities affecting released code that he found through code inspection. These included three uses of uninitialized memory, one poor validation leading to an exploitable crash, one read of unowned memory in zip files, and two buffer overflows...
UI Tour whitelisted sites in background tab can spoof foreground tabs — Mozilla
Mozilla developer Matthew Noorenberghe reported that whitelisted Mozilla domains could make UITour API calls while the UI Tour pages for Firefox are present in background tabs. If one of these Mozilla domains was compromised and open in another tab, an attacker could then use that tab to engage i...
Miscellaneous memory safety hazards (rv:24.0 / rv:17.0.9) — 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...
getUserMedia permission dialog incorrectly displays location — Mozilla
Mozilla engineer Matt Wobensmith discovered that when the getUserMedia permission dialog for an iframe appears in one domain, it will display its origin as that of the top-level document and not the calling framed page. This could lead to users incorrectly giving camera or microphone permissions...
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, buffer overflow, and out of bounds read issues found using Address Sanitizer — Mozilla
Security researcher Abhishek Arya Inferno of the Google Chrome Security Team discovered a series of use-after-free, buffer overflow, and out of bounds read issues using the Address Sanitizer tool in shipped software. These issues are potentially exploitable, allowing for remote code execution. We...
Location object security checks bypassed by chrome code — Mozilla
Mozilla security researcher mozbugra4 reported that certain security checks in the location object can be bypassed if chrome code is called content in a specific manner. This allowed for the loading of restricted content. This can be combined with other issues to become potentially exploitable...
Buffer overflow and use-after-free issues found using Address Sanitizer — Mozilla
Security researcher Abhishek Arya of Google used the Address Sanitizer tool to uncover several issues: two heap buffer overflow bugs and a use-after-free problem. The first heap buffer overflow was found in conversion from unicode to native character sets when the function fails. The use-after-fr...
Fixes for potentially exploitable crashes ported to the legacy branch — Mozilla
Mozilla developers took fixes from previously fixed memory safety bugs in newer Mozilla-based products and ported them to the Mozilla 1.8.1 branch so they can be utilized by Thunderbird 2 and SeaMonkey 1.1...
Security Vulnerabilities fixed in Firefox ESR 115.11 — Mozilla
A type check was missing when handling fonts in PDF.js, which would allow arbitrary JavaScript execution in the PDF.js context. If the browser.privatebrowsing.autostart preference is enabled, IndexedDB files were not properly deleted when the window was closed. This preference is disabled by...
Security Vulnerabilities fixed in Firefox ESR 102.5 — Mozilla
Service Workers should not be able to infer information about opaque cross-origin responses; but timing information for cross-origin media combined with Range requests might have allowed them to determine the presence or length of a media file. Through a series of popup and window.print calls, an...
Security Vulnerabilities fixed in Firefox ESR 78.14 — Mozilla
When delegating navigations to the operating system, Firefox would accept the mk scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode. This bug only affects Firefox for Windows. Other operating systems are unaffected. Mozilla developers...
Security Vulnerabilities fixed in Firefox ESR 68.8 — Mozilla
A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape.Note: this issue only affects Firef...
Use-after-free in HTML5 string parser — Mozilla
Security researcher ca0nguyen, working with HP's Zero Day Initiative, reported a use-after-free issue in the HTML5 string parser when parsing a particular set of table-related tags in a foreign fragment context such as SVG. This results in a potentially exploitable crash...
Memory leak in mozTCPSocket to servers — Mozilla
Security researcher David Chan reported that Mozilla's mozTCPSocket implementation could leak data past the end of an array, allowing for the potential exposure of memory or private data to malicious servers...
Buffer overflow in libvpx while parsing vp9 format video — Mozilla
Security researcher Khalil Zhani reported that a maliciously crafted vp9 format video could be used to trigger a buffer overflow while parsing the file. This leads to a potentially exploitable crash due to a flaw in the libvpx library...
Uninitialized memory use during GIF rendering — Mozilla
Google security researcher Michal Zalewski discovered that when a malformated GIF image is rendered in certain circumstances, memory is not properly initialized before use. The resulting image then uses this memory during rendering. This could allow for the a script in web content to access this...
Use-after-free with imgRequestProxy and image processing — Mozilla
Security researcher Arthur Gerkis, via TippingPoint's Zero Day Initiative, reported a use-after-free during image processing from sites with specific content types in concert with the imgRequestProxy function. This causes a potentially exploitable crash...
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...
Use-after-free issues found using Address Sanitizer — Mozilla
Security researcher Abhishek Arya Inferno of the Google Chrome Security Team discovered a series of use-after-free issues using the Address Sanitizer tool. Many of these issues are potentially exploitable, allowing for remote code execution...
Miscellaneous memory safety hazards (rv:13.0/ rv:10.0.5) — 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...
libpng integer overflow — Mozilla
An integer overflow in the libpng library can lead to a heap-buffer overflow when decompressing certain PNG images. This leads to a crash, which may be potentially exploitable...
Cross-origin data theft using canvas and Windows D2D — Mozilla
Mozilla developer Bas Schouten reported that the introduction of the "Azure" graphics back-end on Windows in Firefox 7 re-introduced the cross-origin data theft issue reported by nasalislarvatus3000 as described in MFSA 2011-29...
Use-after-free vulnerability when viewing XUL document with script disabled — Mozilla
Security researcher Martin Barbella reported that under certain conditions, viewing a XUL document while JavaScript was disabled caused deleted memory to be accessed. This flaw could potentially be used by an attacker to crash a victim's browser and run arbitrary code on their computer...
Same-origin violations in XMLHttpRequest and XPCNativeWrapper.toString — Mozilla
Mozilla security researcher mozbugra4 reported that it is possible to create a document whose URI does not match the document's principal using XMLHttpRequest. This type of mismatch leads to incorrect results in principal-based security checks. An attacker could use this vulnerability to execute...
Security Vulnerabilities fixed in Thunderbird 115.9 — Mozilla
An unchecked return value in TLS handshake code could have caused a potentially exploitable crash. An attacker could have leveraged the Windows Error Reporter to run arbitrary code on the system escaping the sandbox. Note: This issue only affected Windows operating systems. Other operating system...
Security vulnerabilities fixed in Thunderbird 60.4 — Mozilla
A buffer overflow and out-of-bounds read can occur in TextureStorage11 within the ANGLE graphics library, used for WebGL content. This results in a potentially exploitable crash. A use-after-free vulnerability can occur after deleting a selection element due to a weak reference to the select...
Security vulnerabilities fixed in Firefox 50.0.1 — Mozilla
Redirection from an HTTP connection to a data: URL assigns the referring site's origin to the data: URL in some circumstances. This can result in same-origin violations against a domain if it loads resources from malicious sites. Cross-origin setting of cookies has been demonstrated without the...
Miscellaneous memory safety hazards (rv:48.0 / rv:45.3) — Mozilla
Mozilla developers and community members reported 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...
Buffer overflow during ASN.1 decoding in NSS — Mozilla
Security researcher Francis Gabriel of Quarkslab reported a heap-based buffer overflow in the way the Network Security Services NSS libraries parsed certain ASN.1 structures. An attacker could create a specially-crafted certificate which, when parsed by NSS, would cause it to crash or execute...
Mixed content WebSocket policy bypass through workers — Mozilla
Mozilla developer Ehsan Akhgari reported a mechanism through which a web worker could be used to bypass secure requirements for WebSockets when workers are used to create WebSockets. This allows for the bypassing of mixed content WebSocket policy...
Mozilla Windows updater can be run outside of application directory — Mozilla
Security researcher Holger Fuhrmannek previously reported CVE-2015-0833, which was fixed in MFSA2015-12. That flaw allowed for the updater to load binary DLL format files from the local working directory or from the Windows temporary directories. During the fixing of CVE-2015-0833, the need to...
Buffer overflow parsing H.264 video with Linux Gstreamer — Mozilla
Security researcher Aki Helin used the Address Sanitizer tool to find a buffer overflow during video playback on Linux systems. This was due to a problem in older versions of the Gstreamer plugin during the parsing of H.264 formatted video. This issue could be used to induce a possibly exploitabl...
Caja Compiler JavaScript sandbox bypass — Mozilla
Mozilla developer Jan de Mooij reported an issue that affects web content that relies on the Caja Compiler for protection, or other similar sandboxing libraries. He found that some JavaScript objects marked as non-extensible within Caja and Secure EcmaScript could be made extensible again,...
Cross-site scripting (XSS) using history navigations — Mozilla
Mozilla security researcher mozbugra4 reported a method to use browser navigations through history to load a website with that page's baseURI property pointing to that of another site instead of the seemingly loaded one. The user will continue to see the incorrect site in the addressbar of the...
Out-of-bounds write through TypedArrayObject after neutering — Mozilla
Security researcher George Hotz, via TippingPoint's Pwn2Own contest, discovered an issue where values are copied from an array into a second, neutered array. This allows for an out-of-bounds write into memory, causing an exploitable crash leading to arbitrary code execution...
Spoofing attack on WebRTC permission prompt — Mozilla
Mozilla developer Ehsan Akhgari reported a spoofing attack where the permission prompt for a WebRTC session can appear to be from a different site than its actual originating site if a timed navigation occurs during the prompt generation. This allows an attacker to potentially gain access to the...
Miscellaneous memory safety hazards (rv:20.0 / rv:17.0.5) — 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...
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...
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...
Crashes with evidence of memory corruption (rv:1.9.2.2/ 1.9.1.9/ 1.9.0.19) — Mozilla
Mozilla developers identified and fixed several stability bugs in the browser engine used in Firefox and other Mozilla-based products. Some of these crashes showed evidence of memory corruption under certain circumstances, and we presume that with enough effort at least some of these could be...