Mozilla Firefox vulnerabilities

CVE-2023-6213 [HIGH] CWE-787 CVE-2023-6213: Memory safety bugs present in Firefox 119. Some of these bugs showed evidence of memory corruption a Memory safety bugs present in Firefox 119. 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 < 120.

CVE-2023-6208 [HIGH] CVE-2023-6208: When using X11, text selected by the page using the Selection API was erroneously copied into the pr When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard. *This bug only affects Firefox on X11. Other systems are unaffected.* This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

CVE-2023-6212 [HIGH] CWE-787 CVE-2023-6212: Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. Some of these b Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. 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 < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

CVE-2023-6207 [HIGH] CWE-416 CVE-2023-6207: Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Fi Ownership mismanagement led to a use-after-free in ReadableByteStreams This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

CVE-2023-6206 [MEDIUM] CWE-1021 CVE-2023-6206: The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking dela The black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

CVE-2023-6204 [MEDIUM] CWE-125 CVE-2023-6204: On some systems—depending on the graphics settings and drivers—it was possible to force an out-of-bo On some systems—depending on the graphics settings and drivers—it was possible to force an out-of-bounds read and leak memory data into the images created on the canvas element. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

CVE-2023-49061 [MEDIUM] CWE-601 CVE-2023-49061: An attacker could have performed HTML template injection via Reader Mode and exfiltrated user inform An attacker could have performed HTML template injection via Reader Mode and exfiltrated user information. This vulnerability affects Firefox for iOS < 120.

CVE-2023-6211 [MEDIUM] CWE-1021 CVE-2023-6211: If an attacker needed a user to load an insecure http: page and knew that user had enabled HTTPS-onl If an attacker needed a user to load an insecure http: page and knew that user had enabled HTTPS-only mode, the attacker could have tricked the user into clicking to grant an HTTPS-only exception if they could get the user to participate in a clicking game. This vulnerability affects Firefox < 120.

CVE-2023-6205 [MEDIUM] CWE-416 CVE-2023-6205: It was possible to cause the use of a MessagePort after it had already been freed, which could poten It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

CVE-2023-6209 [MEDIUM] CWE-22 CVE-2023-6209: Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. This could contribute to security problems in web sites. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

CVE-2023-6210 [MEDIUM] CVE-2023-6210: When an https: web page created a pop-up from a "javascript:" URL, that pop-up was incorrectly allow When an https: web page created a pop-up from a "javascript:" URL, that pop-up was incorrectly allowed to load blockable content such as iframes from insecure http: URLs This vulnerability affects Firefox < 120.

CVE-2023-5730 [CRITICAL] CWE-787 CVE-2023-5730: Memory safety bugs present in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3. Some of these b Memory safety bugs present in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3. 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 vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

CVE-2023-5731 [CRITICAL] CWE-787 CVE-2023-5731: Memory safety bugs present in Firefox 118. Some of these bugs showed evidence of memory corruption a Memory safety bugs present in Firefox 118. 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 < 119.

CVE-2023-5724 [HIGH] CWE-400 CVE-2023-5724: Drivers are not always robust to extremely large draw calls and in some cases this scenario could ha Drivers are not always robust to extremely large draw calls and in some cases this scenario could have led to a crash. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

CVE-2023-5728 [HIGH] CWE-416 CVE-2023-5728: During garbage collection extra operations were performed on a object that should not be. This could During garbage collection extra operations were performed on a object that should not be. This could have led to a potentially exploitable crash. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

CVE-2023-5725 [MEDIUM] CVE-2023-5725: A malicious installed WebExtension could open arbitrary URLs, which under the right circumstance cou A malicious installed WebExtension could open arbitrary URLs, which under the right circumstance could be leveraged to collect sensitive user data. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

CVE-2023-5729 [MEDIUM] CVE-2023-5729: A malicious web site can enter fullscreen mode while simultaneously triggering a WebAuthn prompt. Th A malicious web site can enter fullscreen mode while simultaneously triggering a WebAuthn prompt. This could have obscured the fullscreen notification and could have been leveraged in a spoofing attack. This vulnerability affects Firefox < 119.

CVE-2023-5722 [MEDIUM] CWE-203 CVE-2023-5722: Using iterative requests an attacker was able to learn the size of an opaque response, as well as th Using iterative requests an attacker was able to learn the size of an opaque response, as well as the contents of a server-supplied Vary header. This vulnerability affects Firefox < 119.

CVE-2023-5723 [MEDIUM] CVE-2023-5723: An attacker with temporary script access to a site could have set a cookie containing invalid charac An attacker with temporary script access to a site could have set a cookie containing invalid characters using `document.cookie` that could have led to unknown errors. This vulnerability affects Firefox < 119.

CVE-2023-5727 [MEDIUM] CVE-2023-5727: The executable file warning was not presented when downloading .msix, .msixbundle, .appx, and .appxb The executable file warning was not presented when downloading .msix, .msixbundle, .appx, and .appxbundle files, which can run commands on a user's computer. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.