Command injection

The constructed curl command from the "Copy as curl" feature in DevTools was not properly escaped for PowerShell. This could have lead to command injection if pasted into a Powershell prompt.This bug only affects Thunderbird for Windows. Other operating systems are unaffected.. This vulnerability...

Session fixation

By injecting a cookie with certain special characters, an attacker on a shared subdomain which is not a secure context could set and thus overwrite cookies from a secure context, leading to session fixation and other attacks. This vulnerability affects Firefox ESR 102.3, Thunderbird 102.3, and...

Memory corruption

Mozilla developers Ashley Hale and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 105 and Firefox ESR 102.3. 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...

Design/Logic Flaw

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. This vulnerability affects Firefox ESR 102.5,...

Memory corruption

If an out-of-memory condition occurred when creating a JavaScript global, a JavaScript realm may be deleted while references to it lived on in a BaseShape. This could lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR 102.5, Thunderbird 102.5,...

Code injection

Concurrent use of the URL parser with non-UTF-8 data was not thread-safe. This could lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR 102.3, Thunderbird 102.3, and Firefox 105...

Design/Logic Flaw

A missing check related to tex units could have led to a use-after-free and potentially exploitable crash.Note: This advisory was added on December 13th, 2022 after we better understood the impact of the issue. The fix was included in the original release of Firefox 105. This vulnerability affect...

Design/Logic Flaw

Requests initiated through reader mode did not properly omit cookies with a SameSite attribute. This vulnerability affects Thunderbird 91.9, Firefox ESR 91.9, and Firefox 100...

Spoofing

Due to a layout change, iframe contents could have been rendered outside of its border. This could have led to user confusion or spoofing attacks. This vulnerability affects Thunderbird 91.8, Firefox 99, and Firefox ESR 91.8...

Design/Logic Flaw

When inserting text while in edit mode, some characters might have lead to out-of-bounds memory access causing a potentially exploitable crash. This vulnerability affects Firefox ESR 91.5, Firefox 96, and Thunderbird 91.5...

Memory corruption

Mozilla developers Paul Adenot and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 96 and Firefox ESR 91.5. 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...

Design/Logic Flaw

A malicious webpage could have caused an out-of-bounds write in WebGL, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird 91.10, Firefox 101, and Firefox ESR 91.10...

Code injection

Freeing arbitrary nsIInputStream's on a different thread than creation could have led to a use-after-free and potentially exploitable crash. This vulnerability affects Firefox ESR 102.5, Thunderbird 102.5, and Firefox 107...

CVE-2021-4127

An out of date graphics library Angle likely contained vulnerabilities that could potentially be exploited. This vulnerability affects Thunderbird 78.9 and Firefox ESR 78.9...

CVE-2022-22746

A race condition could have allowed bypassing the fullscreen notification which could have lead to a fullscreen window spoof being unnoticed.This bug only affects Firefox for Windows. Other operating systems are unaffected.. This vulnerability affects Firefox ESR 91.5, Firefox 96, and Thunderbird...

CVE-2022-22744

The constructed curl command from the "Copy as curl" feature in DevTools was not properly escaped for PowerShell. This could have lead to command injection if pasted into a Powershell prompt.This bug only affects Thunderbird for Windows. Other operating systems are unaffected.. This vulnerability...

Design/Logic Flaw

An attacker could have abused XSLT error handling to associate attacker-controlled content with another origin which was displayed in the address bar. This could have been used to fool the user into submitting data intended for the spoofed origin. This vulnerability affects Thunderbird 102.2,...

Design/Logic Flaw

If a compromised content process sent an unexpected number of WebAuthN Extensions in a Register command to the parent process, an out of bounds write would have occurred leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird 91.8, Firefox 99, and...

Hardcoded credentials

When injecting an HTML base element, some requests would ignore the CSP's base-uri settings and accept the injected element's base instead. This vulnerability affects Firefox ESR 102.3, Thunderbird 102.3, and Firefox 105...

Design/Logic Flaw

If a user was convinced to drag and drop an image to their desktop or other folder, the resulting object could have been changed into an executable script which would have run arbitrary code after the user clicked on it. This vulnerability affects Firefox 97, Thunderbird 91.6, and Firefox ESR 91....