Firefox Security Vulnerabilities

CVE-2023-29535

Following a Garbage Collector compaction, weak maps may have been accessed before they were correctly traced. This resulted in memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android...

CVE-2023-29536

An attacker could cause the memory manager to incorrectly free a pointer that addresses attacker-controlled memory, resulting in an assertion, memory corruption, or a potentially exploitable crash. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Fir...

CVE-2023-29537

Multiple race conditions in the font initialization could have led to memory corruption and execution of attacker-controlled code. This vulnerability affects Firefox for Android < 112, Firefox < 112, and Focus for Android < 112.

CVE-2023-29538

Under specific circumstances a WebExtension may have received a <code>jar:file:///</code> URI instead of a <code>moz-extension:///</code> URI during a load request. This leaked directory paths on the user's machine. This vulnerability affects Firefox for Android &lt; 112, Firefox &lt; 112, and Focu...

CVE-2023-29539

When handling the filename directive in the Content-Disposition header, the filename would be truncated if the filename contained a NULL character. This could have led to reflected file download attacks potentially tricking users to install malware. This vulnerability affects Firefox &lt; 112, Focu...

CVE-2023-29540

Using a redirect embedded into <code>sourceMappingUrls</code> could allow for navigation to external protocol links in sandboxed iframes without <code>allow-top-navigation-to-custom-protocols</code>. This vulnerability affects Firefox for Android &lt; 112, Firefox &lt; 112, and Focus for Android &l...

CVE-2023-29541

Firefox did not properly handle downloads of files ending in <code>.desktop</code>, which can be interpreted to run attacker-controlled commands. <br>This bug only affects Firefox for Linux on certain Distributions. Other operating systems are unaffected, and Mozilla is unable to enumerate all affe...

CVE-2023-29542

A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk with .download. This could have led to accidental execution of malicious code. This bug only affects Firefox and Thunderbird on Windows. Other versions o...

CVE-2023-29543

An attacker could have caused memory corruption and a potentially exploitable use-after-free of a pointer in a global object's debugger vector. This vulnerability affects Firefox for Android &lt; 112, Firefox &lt; 112, and Focus for Android &lt; 112.

CVE-2023-29544

If multiple instances of resource exhaustion occurred at the incorrect time, the garbage collector could have caused memory corruption and a potentially exploitable crash. This vulnerability affects Firefox for Android &lt; 112, Firefox &lt; 112, and Focus for Android &lt; 112.

CVE-2023-29545

Similar to CVE-2023-28163, this time when choosing 'Save Link As', suggested filenames containing environment variable names would have resolved those in the context of the current user. This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffect...

CVE-2023-29546

When recording the screen while in Private Browsing on Firefox for Android the address bar and keyboard were not hidden, potentially leaking sensitive information. This bug only affects Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox for Android &lt; ...

CVE-2023-29547

When a secure cookie existed in the Firefox cookie jar an insecure cookie for the same domain could have been created, when it should have silently failed. This could have led to a desynchronization in expected results when reading from the secure cookie. This vulnerability affects Firefox for Andr...

CVE-2023-29548

A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization result. This vulnerability affects Firefox &lt; 112, Focus for Android &lt; 112, Firefox ESR &lt; 102.10, Firefox for Android &lt; 112, and Thunderbird &lt; 102.10.

CVE-2023-29549

Under certain circumstances, a call to the <code>bind</code> function may have resulted in the incorrect realm. This may have created a vulnerability relating to JavaScript-implemented sandboxes such as SES. This vulnerability affects Firefox for Android &lt; 112, Firefox &lt; 112, and Focus for An...

CVE-2023-29550

Memory safety bugs present in Firefox 111 and Firefox ESR 102.9. 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. This vulnerability affects Firefox &lt; 112, Focus for Android &lt; 112, Fir...

CVE-2023-29551

Memory safety bugs present in Firefox 111. 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. This vulnerability affects Firefox for Android &lt; 112, Firefox &lt; 112, and Focus for Android &...

CVE-2023-32205

In multiple cases browser prompts could have been obscured by popups controlled by content. These could have led to potential user confusion and spoofing attacks. This vulnerability affects Firefox &lt; 113, Firefox ESR &lt; 102.11, and Thunderbird &lt; 102.11.

CVE-2023-32206

An out-of-bound read could have led to a crash in the RLBox Expat driver. This vulnerability affects Firefox &lt; 113, Firefox ESR &lt; 102.11, and Thunderbird &lt; 102.11.

CVE-2023-32207

A missing delay in popup notifications could have made it possible for an attacker to trick a user into granting permissions. This vulnerability affects Firefox &lt; 113, Firefox ESR &lt; 102.11, and Thunderbird &lt; 102.11.

CVE-2023-32208

Service workers could reveal script base URL due to dynamic import(). This vulnerability affects Firefox &lt; 113.

CVE-2023-32209

A maliciously crafted favicon could have led to an out of memory crash. This vulnerability affects Firefox &lt; 113.

CVE-2023-32210

Documents were incorrectly assuming an ordering of principal objects when ensuring we were loading an appropriately privileged principal. In certain circumstances it might have been possible to cause a document to be loaded with a higher privileged principal than intended. This vulnerability affect...

CVE-2023-32211

A type checking bug would have led to invalid code being compiled. This vulnerability affects Firefox &lt; 113, Firefox ESR &lt; 102.11, and Thunderbird &lt; 102.11.

CVE-2023-32212

An attacker could have positioned a <code>datalist</code> element to obscure the address bar. This vulnerability affects Firefox &lt; 113, Firefox ESR &lt; 102.11, and Thunderbird &lt; 102.11.

CVE-2023-32213

When reading a file, an uninitialized value could have been used as read limit. This vulnerability affects Firefox &lt; 113, Firefox ESR &lt; 102.11, and Thunderbird &lt; 102.11.

CVE-2023-32214

Protocol handlers ms-cxh and ms-cxh-full could have been leveraged to trigger a denial of service.Note: This attack only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox &lt; 113, Firefox ESR &lt; 102.11, and Thunderbird &lt; 102.11.

CVE-2023-32215

Memory safety bugs present in Firefox 112 and Firefox ESR 102.10. 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. This vulnerability affects Firefox &lt; 113, Firefox ESR &lt; 102.11, and T...

CVE-2023-32216

Memory safety bugs present in Firefox 112. 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. This vulnerability affects Firefox &lt; 113.

CVE-2023-34414

The error page for sites with invalid TLS certificates was missing theactivation-delay Firefox uses to protect prompts and permission dialogsfrom attacks that exploit human response time delays. If a maliciouspage elicited user clicks in precise locations immediately beforenavigating to a site with...

CVE-2023-34415

When choosing a site-isolated process for a document loaded from a data: URL that was the result of a redirect, Firefox would load that document in the same process as the site that issued the redirect. This bypassed the site-isolation protections against Spectre-like attacks on sites that host an ...

CVE-2023-34416

Memory safety bugs present in Firefox 113, Firefox ESR 102.11, and Thunderbird 102.12. 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. This vulnerability affects Firefox ESR &lt; 102.12, Fi...

CVE-2023-34417

Memory safety bugs present in Firefox 113. 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. This vulnerability affects Firefox &lt; 114.

CVE-2023-3482

When Firefox is configured to block storage of all cookies, it was still possible to store data in localstorage by using an iframe with a source of 'about:blank'. This could have led to malicious websites storing tracking data without permission. This vulnerability affects Firefox &lt; 115.

CVE-2023-3600

During the worker lifecycle, a use-after-free condition could have occured, which could have led to a potentially exploitable crash. This vulnerability affects Firefox &lt; 115.0.2, Firefox ESR &lt; 115.0.2, and Thunderbird &lt; 115.0.1.

CVE-2023-37201

An attacker could have triggered a use-after-free condition when creating a WebRTC connection over HTTPS. This vulnerability affects Firefox &lt; 115, Firefox ESR &lt; 102.13, and Thunderbird &lt; 102.13.

CVE-2023-37202

Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to be stored in the main compartment resulting in a use-after-free. This vulnerability affects Firefox &lt; 115, Firefox ESR &lt; 102.13, and Thunderbird &lt; 102.13.

CVE-2023-37203

Insufficient validation in the Drag and Drop API in conjunction with social engineering, may have allowed an attacker to trick end-users into creating a shortcut to local system files. This could have been leveraged to execute arbitrary code. This vulnerability affects Firefox &lt; 115.

CVE-2023-37204

A website could have obscured the fullscreen notification by using an option element by introducing lag via an expensive computational function. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox &lt; 115.

CVE-2023-37205

The use of RTL Arabic characters in the address bar may have allowed for URL spoofing. This vulnerability affects Firefox &lt; 115.

CVE-2023-37206

Uploading files which contain symlinks may have allowed an attacker to trick a user into submitting sensitive data to a malicious website. This vulnerability affects Firefox &lt; 115.

CVE-2023-37207

A website could have obscured the fullscreen notification by using a URL with a scheme handled by an external program, such as a mailto URL. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox &lt; 115, Firefox ESR &lt; 102.13, and Thunderbird &lt...

CVE-2023-37208

When opening Diagcab files, Firefox did not warn the user that these files may contain malicious code. This vulnerability affects Firefox &lt; 115, Firefox ESR &lt; 102.13, and Thunderbird &lt; 102.13.

CVE-2023-37209

A use-after-free condition existed in NotifyOnHistoryReload where a LoadingSessionHistoryEntry object was freed and a reference to that object remained. This resulted in a potentially exploitable condition when the reference to that object was later reused. This vulnerability affects Firefox &lt; 1...

CVE-2023-37210

A website could prevent a user from exiting full-screen mode via alert and prompt calls. This could lead to user confusion and possible spoofing attacks. This vulnerability affects Firefox &lt; 115.

CVE-2023-37211

Memory safety bugs present in Firefox 114, Firefox ESR 102.12, and Thunderbird 102.12. 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. This vulnerability affects Firefox &lt; 115, Firefox E...

CVE-2023-37212

Memory safety bugs present in Firefox 114. 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. This vulnerability affects Firefox &lt; 115.

CVE-2023-37455

The permission request prompt from the site in the background tab was overlaid on top of the site in the foreground tab. This vulnerability affects Firefox for iOS &lt; 115.

CVE-2023-37456

The session restore helper crashed whenever there was no parameter sent to the message handler. This vulnerability affects Firefox for iOS &lt; 115.

CVE-2023-4045

Offscreen Canvas did not properly track cross-origin tainting, which could have been used to access image data from another site in violation of same-origin policy. This vulnerability affects Firefox &lt; 116, Firefox ESR &lt; 102.14, and Firefox ESR &lt; 115.1.