Thunderbird Security Vulnerabilities

CVE-2023-29531

An attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory corruption and a potentially exploitable crash. This bug only affects Firefox and Thunderbird for macOS. Other operating systems are unaffected. This vulnerability affects Firefox < 112, Firefox ESR ...

CVE-2023-29532

A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by pointing the service at an update file on a malicious SMB server. The update file can be replaced after the signature check, before the use, because the write-lock requested by the service does not w...

CVE-2023-29533

A website could have obscured the fullscreen notification by using a combination of <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks. This vulnerability affect...

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 &lt; 112, Focus for Android &lt; 112, Firefox ESR &lt; 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 &lt; 112, Focus for Android &lt; 112, Firefox ESR &lt; 102.10, Fir...

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-2023-29541

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-2023-29545

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-2023-29548

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-2023-29550

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-2023-32205

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-2023-32211

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-2023-3417

Thunderbird allowed the Text Direction Override Unicode Character in filenames. An email attachment could be incorrectly shown as being a document file, while in fact it was an executable file. Newer versions of Thunderbird will strip the character and show the correct file extension. This vulnerab...

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-2023-34416

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-2023-3600

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-2023-37207

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-2023-37211

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-2023-4051

A website could have obscured the full screen notification by using the file open dialog. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox &lt; 116, Firefox ESR &lt; 115.2, and Thunderbird &lt; 115.2.

CVE-2023-4052

The Firefox updater created a directory writable by non-privileged users. When uninstalling Firefox, any files in that directory would be recursively deleted with the permissions of the uninstalling user account. This could be combined with creation of a junction (a form of symbolic link) to allow ...

CVE-2023-4053

A website could have obscured the full screen 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; 116, Firefox ESR &lt; 115.2, and Thunderbird &lt...

CVE-2023-4054

When opening appref-ms files, Firefox did not warn the user that these files may contain malicious code.This bug only affects Firefox on Windows. Other operating systems are unaffected. This vulnerability affects Firefox &lt; 116, Firefox ESR &lt; 102.14, Firefox ESR &lt; 115.1, Thunderbird &lt; 10...

CVE-2023-4057

Memory safety bugs present in Firefox 115, Firefox ESR 115.0, and Thunderbird 115.0. 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; 116, Firefox ESR...

CVE-2023-4573

When receiving rendering data over IPC mStream could have been destroyed when initialized, which could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox &lt; 117, Firefox ESR &lt; 102.15, Firefox ESR &lt; 115.2, Thunderbird &lt; 102.15, and Thu...

CVE-2023-4574

When creating a callback over IPC for showing the Color Picker window, multiple of the same callbacks could have been created at a time and eventually all simultaneously destroyed as soon as one of the callbacks finished. This could have led to a use-after-free causing a potentially exploitable cra...

CVE-2023-4575

When creating a callback over IPC for showing the File Picker window, multiple of the same callbacks could have been created at a time and eventually all simultaneously destroyed as soon as one of the callbacks finished. This could have led to a use-after-free causing a potentially exploitable cras...

CVE-2023-4576

On Windows, an integer overflow could occur in RecordedSourceSurfaceCreation which resulted in a heap buffer overflow potentially leaking sensitive data that could have led to a sandbox escape.This bug only affects Firefox on Windows. Other operating systems are unaffected. This vulnerability affec...

CVE-2023-4577

When UpdateRegExpStatics attempted to access initialStringHeap it could already have been garbage collected prior to entering the function, which could potentially have led to an exploitable crash. This vulnerability affects Firefox &lt; 117, Firefox ESR &lt; 115.2, and Thunderbird &lt; 115.2.

CVE-2023-4578

When calling JS::CheckRegExpSyntax a Syntax Error could have been set which would end in calling convertToRuntimeErrorAndClear. A path in the function could attempt to allocate memory when none is available which would have caused a newly created Out of Memory exception to be mishandled as a Syntax...

CVE-2023-4580

Push notifications stored on disk in private browsing mode were not being encrypted potentially allowing the leak of sensitive information. This vulnerability affects Firefox &lt; 117, Firefox ESR &lt; 115.2, and Thunderbird &lt; 115.2.

CVE-2023-4581

Excel .xll add-in files did not have a blocklist entry in Firefox's executable blocklist which allowed them to be downloaded without any warning of their potential harm. This vulnerability affects Firefox &lt; 117, Firefox ESR &lt; 102.15, Firefox ESR &lt; 115.2, Thunderbird &lt; 102.15, and Thunde...

CVE-2023-4582

Due to large allocation checks in Angle for glsl shaders being too lenient a buffer overflow could have occured when allocating too much private shader memory on mac OS.This bug only affects Firefox on macOS. Other operating systems are unaffected. This vulnerability affects Firefox &lt; 117, Firef...

CVE-2023-4583

When checking if the Browsing Context had been discarded in HttpBaseChannel, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This vulnerability affects Firefox &lt; 117, Fi...

CVE-2023-4584

Memory safety bugs present in Firefox 116, Firefox ESR 102.14, Firefox ESR 115.1, Thunderbird 102.14, and Thunderbird 115.1. 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 vulnerabili...

CVE-2023-4585

Memory safety bugs present in Firefox 116, Firefox ESR 115.1, and Thunderbird 115.1. 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; 117, Firefox ESR...

CVE-2023-4863

Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical)

CVE-2023-50761

The signature of a digitally signed S/MIME email message may optionally specify the signature creation date and time. If present, Thunderbird did not compare the signature creation date with the message date and time, and displayed a valid signature despite a date or time mismatch. This could be us...

CVE-2023-50762

When processing a PGP/MIME payload that contains digitally signed text, the first paragraph of the text was never shown to the user. This is because the text was interpreted as a MIME message and the first paragraph was always treated as an email header section. A digitally signed text from a diffe...

CVE-2023-5168

A compromised content process could have provided malicious data to FilterNodeD2D1 resulting in an out-of-bounds write, leading to a potentially exploitable crash in a privileged process.This bug only affects Firefox on Windows. Other operating systems are unaffected. This vulnerability affects Fir...

CVE-2023-5169

A compromised content process could have provided malicious data in a PathRecording resulting in an out-of-bounds write, leading to a potentially exploitable crash in a privileged process. This vulnerability affects Firefox &lt; 118, Firefox ESR &lt; 115.3, and Thunderbird &lt; 115.3.