CVE-2022-45403

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, Thunderbird < 102.5, and Firefox < 107.

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 102.5.0.

Security Fix(es):

• Mozilla: Service Workers might have learned size of cross-origin media files (CVE-2022-45403)

• Mozilla: Fullscreen notification bypass (CVE-2022-45404)

• Mozilla: Use-after-free in InputStream implementation (CVE-2022-45405)

• Mozilla: Use-after-free of a JavaScript Realm (CVE-2022-45406)

• Mozilla: Fullscreen notification bypass via windowName (CVE-2022-45408)

• Mozilla: Use-after-free in Garbage Collection (CVE-2022-45409)

• Mozilla: Memory safety bugs fixed in Firefox 107 and Firefox ESR 102.5 (CVE-2022-45421)

• Mozilla: ServiceWorker-intercepted requests bypassed SameSite cookie policy (CVE-2022-45410)

• Mozilla: Cross-Site Tracing was possible via non-standard override headers (CVE-2022-45411)

• Mozilla: Symlinks may resolve to partially uninitialized buffers (CVE-2022-45412)

• Mozilla: Keystroke Side-Channel Leakage (CVE-2022-45416)

• Mozilla: Custom mouse cursor could have been drawn over browser UI (CVE-2022-45418)

• Mozilla: Iframe contents could be rendered outside the iframe (CVE-2022-45420)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

This update upgrades Firefox to version 102.5.0 ESR.

Security Fix(es):

• Mozilla: Service Workers might have learned size of cross-origin media files (CVE-2022-45403)

• Mozilla: Fullscreen notification bypass (CVE-2022-45404)

• Mozilla: Use-after-free in InputStream implementation (CVE-2022-45405)

• Mozilla: Use-after-free of a JavaScript Realm (CVE-2022-45406)

• Mozilla: Fullscreen notification bypass via windowName (CVE-2022-45408)

• Mozilla: Use-after-free in Garbage Collection (CVE-2022-45409)

• Mozilla: Memory safety bugs fixed in Firefox 107 and Firefox ESR 102.5 (CVE-2022-45421)

• Mozilla: ServiceWorker-intercepted requests bypassed SameSite cookie policy (CVE-2022-45410)

• Mozilla: Cross-Site Tracing was possible via non-standard override headers (CVE-2022-45411)

• Mozilla: Symlinks may resolve to partially uninitialized buffers (CVE-2022-45412)

• Mozilla: Keystroke Side-Channel Leakage (CVE-2022-45416)

• Mozilla: Custom mouse cursor could have been drawn over browser UI (CVE-2022-45418)

• Mozilla: Iframe contents could be rendered outside the iframe (CVE-2022-45420)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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, Thunderbird < 102.5, and Firefox < 107.

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 102.5.0.

Security Fix(es):

• Mozilla: Service Workers might have learned size of cross-origin media files (CVE-2022-45403)
• Mozilla: Fullscreen notification bypass (CVE-2022-45404)
• Mozilla: Use-after-free in InputStream implementation (CVE-2022-45405)
• Mozilla: Use-after-free of a JavaScript Realm (CVE-2022-45406)
• Mozilla: Fullscreen notification bypass via windowName (CVE-2022-45408)
• Mozilla: Use-after-free in Garbage Collection (CVE-2022-45409)
• Mozilla: Memory safety bugs fixed in Firefox 107 and Firefox ESR 102.5 (CVE-2022-45421)
• Mozilla: ServiceWorker-intercepted requests bypassed SameSite cookie policy (CVE-2022-45410)
• Mozilla: Cross-Site Tracing was possible via non-standard override headers (CVE-2022-45411)
• Mozilla: Symlinks may resolve to partially uninitialized buffers (CVE-2022-45412)
• Mozilla: Keystroke Side-Channel Leakage (CVE-2022-45416)
• Mozilla: Custom mouse cursor could have been drawn over browser UI (CVE-2022-45418)
• Mozilla: Iframe contents could be rendered outside the iframe (CVE-2022-45420)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

This update upgrades Firefox to version 102.5.0 ESR.

Security Fix(es):

• Mozilla: Service Workers might have learned size of cross-origin media files (CVE-2022-45403)
• Mozilla: Fullscreen notification bypass (CVE-2022-45404)
• Mozilla: Use-after-free in InputStream implementation (CVE-2022-45405)
• Mozilla: Use-after-free of a JavaScript Realm (CVE-2022-45406)
• Mozilla: Fullscreen notification bypass via windowName (CVE-2022-45408)
• Mozilla: Use-after-free in Garbage Collection (CVE-2022-45409)
• Mozilla: Memory safety bugs fixed in Firefox 107 and Firefox ESR 102.5 (CVE-2022-45421)
• Mozilla: ServiceWorker-intercepted requests bypassed SameSite cookie policy (CVE-2022-45410)
• Mozilla: Cross-Site Tracing was possible via non-standard override headers (CVE-2022-45411)
• Mozilla: Symlinks may resolve to partially uninitialized buffers (CVE-2022-45412)
• Mozilla: Keystroke Side-Channel Leakage (CVE-2022-45416)
• Mozilla: Custom mouse cursor could have been drawn over browser UI (CVE-2022-45418)
• Mozilla: Iframe contents could be rendered outside the iframe (CVE-2022-45420)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 102.5.0.

Security Fix(es):

• Mozilla: Service Workers might have learned size of cross-origin media files (CVE-2022-45403)
• Mozilla: Fullscreen notification bypass (CVE-2022-45404)
• Mozilla: Use-after-free in InputStream implementation (CVE-2022-45405)
• Mozilla: Use-after-free of a JavaScript Realm (CVE-2022-45406)
• Mozilla: Fullscreen notification bypass via windowName (CVE-2022-45408)
• Mozilla: Use-after-free in Garbage Collection (CVE-2022-45409)
• Mozilla: Memory safety bugs fixed in Firefox 107 and Firefox ESR 102.5 (CVE-2022-45421)
• Mozilla: ServiceWorker-intercepted requests bypassed SameSite cookie policy (CVE-2022-45410)
• Mozilla: Cross-Site Tracing was possible via non-standard override headers (CVE-2022-45411)
• Mozilla: Symlinks may resolve to partially uninitialized buffers (CVE-2022-45412)
• Mozilla: Keystroke Side-Channel Leakage (CVE-2022-45416)
• Mozilla: Custom mouse cursor could have been drawn over browser UI (CVE-2022-45418)
• Mozilla: Iframe contents could be rendered outside the iframe (CVE-2022-45420)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

This update upgrades Firefox to version 102.5.0 ESR.

Security Fix(es):

• Mozilla: Service Workers might have learned size of cross-origin media files (CVE-2022-45403)
• Mozilla: Fullscreen notification bypass (CVE-2022-45404)
• Mozilla: Use-after-free in InputStream implementation (CVE-2022-45405)
• Mozilla: Use-after-free of a JavaScript Realm (CVE-2022-45406)
• Mozilla: Fullscreen notification bypass via windowName (CVE-2022-45408)
• Mozilla: Use-after-free in Garbage Collection (CVE-2022-45409)
• Mozilla: Memory safety bugs fixed in Firefox 107 and Firefox ESR 102.5 (CVE-2022-45421)
• Mozilla: ServiceWorker-intercepted requests bypassed SameSite cookie policy (CVE-2022-45410)
• Mozilla: Cross-Site Tracing was possible via non-standard override headers (CVE-2022-45411)
• Mozilla: Symlinks may resolve to partially uninitialized buffers (CVE-2022-45412)
• Mozilla: Keystroke Side-Channel Leakage (CVE-2022-45416)
• Mozilla: Custom mouse cursor could have been drawn over browser UI (CVE-2022-45418)
• Mozilla: Iframe contents could be rendered outside the iframe (CVE-2022-45420)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations (CVE-2022-43680).

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 (CVE-2022-45403).

Through a series of popup and window.print() calls, an attacker can cause a window to go fullscreen without the user seeing the notification prompt, resulting in potential user confusion or spoofing attacks (CVE-2022-45404).

Freeing arbitrary nsIInputStream's on a different thread than creation could have led to a use-after-free and potentially exploitable crash (CVE-2022-45405).

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 (CVE-2022-45406).

Through a series of popups that reuse windowName, an attacker can cause a window to go fullscreen without the user seeing the notification prompt, resulting in potential user confusion or spoofing attacks (CVE-2022-45408).

The garbage collector could have been aborted in several states and zones and GCRuntime::finishCollection may not have been called, leading to a use-after-free and potentially exploitable crash (CVE-2022-45409).

When a ServiceWorker intercepted a request with FetchEvent, the origin of the request was lost after the ServiceWorker took ownership of it. This had the effect of negating SameSite cookie protections. This was addressed in the spec and then in browsers (CVE-2022-45410).

Cross-Site Tracing occurs when a server will echo a request back via the Trace method, allowing an XSS attack to access to authorization headers and cookies inaccessible to JavaScript (such as cookies protected by HTTPOnly). To mitigate this attack, browsers placed limits on fetch() and XMLHttpRequest; however some webservers have implemented non-standard headers such as X-Http-Method-Override that override the HTTP method, and made this attack possible again. Firefox has applied the same mitigations to the use of this and similar headers (CVE-2022-45411).

When resolving a symlink such as file:///proc/self/fd/1, an error message may be produced where the symlink was resolved to a string containing unitialized memory in the buffer (CVE-2022-45412).

Keyboard events reference strings like "KeyA" that were at fixed, known, and widely-spread addresses. Cache-based timing attacks such as Prime+Probe could have possibly figured out which keys were being pressed (CVE-2022-45416).

If a custom mouse cursor is specified in CSS, under certain circumstances the cursor could have been drawn over the browser UI, resulting in potential user confusion or spoofing attacks (CVE-2022-45418).

Use tables inside of an iframe, an attacker could have caused iframe contents to be rendered outside the boundaries of the iframe, resulting in potential user confusion or spoofing attacks (CVE-2022-45420).

Mozilla developers Andrew McCreight and Gabriele Svelto reported memory safety bugs present in Firefox ESR 102.4. 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 (CVE-2022-45421).

Service Workers might have learned size of cross-origin media files. (CVE-2022-45403)

Fullscreen notification bypass. (CVE-2022-45404)

Use-after-free in InputStream implementation. (CVE-2022-45405)

Use-after-free of a JavaScript Realm. (CVE-2022-45406)

Fullscreen notification bypass via windowName. (CVE-2022-45408)

Use-after-free in Garbage Collection. (CVE-2022-45409)

ServiceWorker-intercepted requests bypassed SameSite cookie policy. (CVE-2022-45410)

Cross-Site Tracing was possible via non-standard override headers. (CVE-2022-45411)

Symlinks may resolve to partially uninitialized buffers. (CVE-2022-45412)

Keystroke Side-Channel Leakage. (CVE-2022-45416)

Custom mouse cursor could have been drawn over browser UI. (CVE-2022-45418)

Iframe contents could be rendered outside the iframe. (CVE-2022-45420)

Memory safety bugs fixed in Thunderbird 102.5. (CVE-2022-45421)

These are all security issues fixed in the MozillaFirefox-107.0-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the MozillaThunderbird-102.5.0-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the libmozjs-102-0-102.5.0-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

This update for MozillaFirefox fixes the following issues:

Update to Firefox Extended Support Release 102.5.0 ESR (MFSA 2022-48, bsc#1205270):

• CVE-2022-45403: Service Workers might have learned size of cross-origin media files
• CVE-2022-45404: Fullscreen notification bypass
• CVE-2022-45405: Use-after-free in InputStream implementation
• CVE-2022-45406: Use-after-free of a JavaScript Realm
• CVE-2022-45408: Fullscreen notification bypass via windowName
• CVE-2022-45409: Use-after-free in Garbage Collection
• CVE-2022-45410: ServiceWorker-intercepted requests bypassed SameSite cookie policy
• CVE-2022-45411: Cross-Site Tracing was possible via non-standard override headers
• CVE-2022-45412: Symlinks may resolve to partially uninitialized buffers
• CVE-2022-45416: Keystroke Side-Channel Leakage
• CVE-2022-45418: Custom mouse cursor could have been drawn over browser UI
• CVE-2022-45420: Iframe contents could be rendered outside the iframe
• CVE-2022-45421: Memory safety bugs fixed in Firefox 107 and Firefox ESR 102.5

This update for MozillaFirefox fixes the following issues:

Update to Firefox Extended Support Release 102.5.0 ESR (MFSA 2022-48, bsc#1205270):

• CVE-2022-45403: Service Workers might have learned size of cross-origin media files
• CVE-2022-45404: Fullscreen notification bypass
• CVE-2022-45405: Use-after-free in InputStream implementation
• CVE-2022-45406: Use-after-free of a JavaScript Realm
• CVE-2022-45408: Fullscreen notification bypass via windowName
• CVE-2022-45409: Use-after-free in Garbage Collection
• CVE-2022-45410: ServiceWorker-intercepted requests bypassed SameSite cookie policy
• CVE-2022-45411: Cross-Site Tracing was possible via non-standard override headers
• CVE-2022-45412: Symlinks may resolve to partially uninitialized buffers
• CVE-2022-45416: Keystroke Side-Channel Leakage
• CVE-2022-45418: Custom mouse cursor could have been drawn over browser UI
• CVE-2022-45420: Iframe contents could be rendered outside the iframe
• CVE-2022-45421: Memory safety bugs fixed in Firefox 107 and Firefox ESR 102.5

This update for MozillaThunderbird fixes the following issues:

• Fixed various security issues (MFSA 2022-49, bsc#1205270):

  • CVE-2022-45403 (bmo#1762078) Service Workers might have learned size of cross-origin media files
  • CVE-2022-45404 (bmo#1790815) Fullscreen notification bypass
  • CVE-2022-45405 (bmo#1791314) Use-after-free in InputStream implementation
  • CVE-2022-45406 (bmo#1791975) Use-after-free of a JavaScript Realm
  • CVE-2022-45408 (bmo#1793829) Fullscreen notification bypass via windowName
  • CVE-2022-45409 (bmo#1796901) Use-after-free in Garbage Collection
  • CVE-2022-45410 (bmo#1658869) ServiceWorker-intercepted requests bypassed SameSite cookie policy
  • CVE-2022-45411 (bmo#1790311) Cross-Site Tracing was possible via non-standard override headers
  • CVE-2022-45412 (bmo#1791029) Symlinks may resolve to partially uninitialized buffers
  • CVE-2022-45416 (bmo#1793676) Keystroke Side-Channel Leakage
  • CVE-2022-45418 (bmo#1795815) Custom mouse cursor could have been drawn over browser UI
  • CVE-2022-45420 (bmo#1792643) Iframe contents could be rendered outside the iframe
  • CVE-2022-45421 (bmo#1767920, bmo#1789808, bmo#1794061) Memory safety bugs fixed in Thunderbird 102.5

• Fixed various security issues: (MFSA 2022-46, bsc#1204421):

  • CVE-2022-42927 (bmo#1789128) Same-origin policy violation could have leaked cross-origin URLs
  • CVE-2022-42928 (bmo#1791520) Memory Corruption in JS Engine
  • CVE-2022-42929 (bmo#1789439) Denial of Service via window.print
  • CVE-2022-42932 (bmo#1789729, bmo#1791363, bmo#1792041) Memory safety bugs fixed in Thunderbird 102.4

• Mozilla Thunderbird 102.5

  • changed: Ctrl+N shortcut to create new contacts from address book restored (bmo#1751288)
  • fixed: Account Settings UI did not update to reflect default identity changes (bmo#1782646)
  • fixed: New POP mail notifications were incorrectly shown for messages marked by filters as read or junk (bmo#1787531)
  • fixed: Connecting to an IMAP server configured to use PREAUTH caused Thunderbird to hang (bmo#1798161)
  • fixed: Error responses received in greeting header from NNTP servers did not display error message (bmo#1792281)
  • fixed: News messages sent using 'Send Later' failed to send after going back online (bmo#1794997)
  • fixed: 'Download/Sync Now...' did not completely sync all newsgroups before going offline (bmo#1795547)
  • fixed: Username was missing from error dialog on failed login to news server (bmo#1796964)
  • fixed: Thunderbird can now fetch RSS channel feeds with incomplete channel URL (bmo#1794775)
  • fixed: Add-on 'Contribute' button in Add-ons Manager did not work (bmo#1795751)
  • fixed: Help text for /part Matrix command was incorrect (bmo#1795578)
  • fixed: Invite Attendees dialog did not fetch free/busy info for attendees with encoded characters in their name (bmo#1797927)

• Mozilla Thunderbird 102.4.2

  • changed: 'Address Book' button in Account Central will now create a CardDAV address book instead of a local address book (bmo#1793903)
  • fixed: Messages fetched from POP server in Fetch headers only mode disappeared when moved to different folder by filter action (bmo#1793374)
  • fixed: Thunderbird re-downloaded locally deleted messages from a POP server when 'Leave messages on server' and 'Until I delete them' were enabled (bmo#1796903)
  • fixed: Multiple password prompts for the same POP account could be displayed (bmo#1786920)
  • fixed: IMAP authentication failed on next startup if ImapMail folder was deleted by user (bmo#1793599)
  • fixed: Retrieving passwords for authenticated NNTP accounts could fail due to obsolete preferences in a users profile on every startup (bmo#1770594)
  • fixed: Get Next n Messages did not consistently fetch all messages requested from NNTP server…

This update for MozillaFirefox fixes the following issues:

Update to Firefox Extended Support Release 102.5.0 ESR (MFSA 2022-48, bsc#1205270):

• CVE-2022-45403: Service Workers might have learned size of cross-origin media files
• CVE-2022-45404: Fullscreen notification bypass
• CVE-2022-45405: Use-after-free in InputStream implementation
• CVE-2022-45406: Use-after-free of a JavaScript Realm
• CVE-2022-45408: Fullscreen notification bypass via windowName
• CVE-2022-45409: Use-after-free in Garbage Collection
• CVE-2022-45410: ServiceWorker-intercepted requests bypassed SameSite cookie policy
• CVE-2022-45411: Cross-Site Tracing was possible via non-standard override headers
• CVE-2022-45412: Symlinks may resolve to partially uninitialized buffers
• CVE-2022-45416: Keystroke Side-Channel Leakage
• CVE-2022-45418: Custom mouse cursor could have been drawn over browser UI
• CVE-2022-45420: Iframe contents could be rendered outside the iframe
• CVE-2022-45421: Memory safety bugs fixed in Firefox 107 and Firefox ESR 102.5

Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, spoof the contents of the addressbar, bypass security restrictions, cross-site tracing or execute arbitrary code. (CVE-2022-45403, CVE-2022-45404, CVE-2022-45405, CVE-2022-45406, CVE-2022-45407, CVE-2022-45408, CVE-2022-45409, CVE-2022-45410, CVE-2022-45411, CVE-2022-45413, CVE-2022-40674, CVE-2022-45418, CVE-2022-45419, CVE-2022-45420, CVE-2022-45421)

Armin Ebert discovered that Firefox did not properly manage while resolving file symlink. If a user were tricked into opening a specially crafted weblink, an attacker could potentially exploit these to cause a denial of service. (CVE-2022-45412)

Jefferson Scher and Jayateertha Guruprasad discovered that Firefox did not properly sanitize the HTML download file extension under certain circumstances. If a user were tricked into downloading and executing malicious content, a remote attacker could execute arbitrary code with the privileges of the user invoking the programs. (CVE-2022-45415)

Erik Kraft, Martin Schwarzl, and Andrew McCreight discovered that Firefox incorrectly handled keyboard events. An attacker could possibly use this issue to perform a timing side-channel attack and possibly figure out which keys are being pressed. (CVE-2022-45416)

Kagami discovered that Firefox did not detect Private Browsing Mode correctly. An attacker could possibly use this issue to obtain sensitive information about Private Browsing Mode. (CVE-2022-45417)

Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass security restrictions, cross-site tracing, or execute arbitrary code. (CVE-2022-45403, CVE-2022-45404, CVE-2022-45405, CVE-2022-45406, CVE-2022-45408, CVE-2022-45409, CVE-2022-45410, CVE-2022-45411, CVE-2022-45418, CVE-2022-45420, CVE-2022-45421, CVE-2022-46878, CVE-2022-46880, CVE-2022-46881, CVE-2022-46882, CVE-2023-23605)

Armin Ebert discovered that Thunderbird did not properly manage memory while resolving file symlink. If a user were tricked into opening a specially crafted weblink, an attacker could potentially exploit these to cause a denial of service. (CVE-2022-45412)

Sarah Jamie Lewis discovered that Thunderbird did not properly manage network request while handling HTML emails with certain tags. If a user were tricked into opening a specially HTML email, an attacker could potentially exploit these issue and load remote content regardless of a configuration to block remote content. (CVE-2022-45414)

Erik Kraft, Martin Schwarzl, and Andrew McCreight discovered that Thunderbird incorrectly handled keyboard events. An attacker could possibly use this issue to perform a timing side-channel attack and possibly figure out which keys are being pressed. (CVE-2022-45416)

It was discovered that Thunderbird was using an out-of-date libusrsctp library. An attacker could possibly use this library to perform a reentrancy issue on Thunderbird. (CVE-2022-46871)

Nika Layzell discovered that Thunderbird was not performing a check on paste received from cross-processes. An attacker could potentially exploit this to obtain sensitive information. (CVE-2022-46872)

Matthias Zoellner discovered that Thunderbird was not keeping the filename ending intact when using the drag-and-drop event. An attacker could possibly use this issue to add a file with a malicious extension, leading to execute arbitrary code. (CVE-2022-46874)

Hafiizh discovered that Thunderbird was not properly handling fullscreen notifications when the window goes into fullscreen mode. An attacker could possibly use this issue to spoof the user and obtain sensitive information. (CVE-2022-46877)

Tom Schuster discovered that Thunderbird was not performing a validation check on GTK drag data. An attacker could potentially exploits this to obtain sensitive information. (CVE-2023-23598)

Vadim discovered that Thunderbird was not properly sanitizing a curl command output when copying a network request from the developer tools panel. An attacker could potentially exploits this to hide and execute arbitrary commands. (CVE-2023-23599)

Luan Herrera discovered that Thunderbird was not stopping navigation when dragging a URL from a cross-origin iframe into the same tab. An attacker potentially exploits this to spoof the user. (CVE-2023-23601)

Dave Vandyke discovered that Thunderbird did not properly implement CSP policy when creating a WebSocket in a WebWorker. An attacker who was able to inject markup into a page otherwise protected by a Content Security Policy may have been able to inject an executable script. (CVE-2023-23602)

Dan Veditz discovered that Thunderbird did not properly implement CSP policy on regular expression when using console.log. An attacker potentially exploits this to exfiltrate data. (CVE-2023-23603)

It was discovered that Thunderbird did not properly check the Certificate OCSP revocation status when verifying S/Mime signatures. An attacker could possibly use this issue to bypass signature validation check by sending email signed with a revoked certificate. (CVE-2023-0430)