CVE-2022-26386

Previously Firefox for macOS and Linux would download temporary files to a user-specific directory in <code>/tmp</code>, but this behavior was changed to download them to <code>/tmp</code> where they could be affected by other local users. This behavior was reverted to the original, user-specific directory. <br>This bug only affects Firefox for macOS and Linux. Other operating systems are unaffected.. This vulnerability affects Firefox ESR < 91.7 and Thunderbird < 91.7.

Mozilla Firefox is a standalone web browser, designed for standards compliance and performance. Its functionality can be enhanced via a plethora of extensions.

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

Security Fix(es):

Mozilla developers reported memory safety bugs present in Firefox for Android 79. 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 < 80, Firefox ESR < 78.2, Thunderbird < 78.2, and Firefox for Android < 80.(CVE-2020-15670)

Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. 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 < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.(CVE-2020-15673)

Mozilla developers reported memory safety bugs present in Firefox 80. 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 < 81.(CVE-2020-15674)

When processing surfaces, the lifetime may outlive a persistent buffer leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 81.(CVE-2020-15675)

If a valid external protocol handler was referenced in an image tag, the resulting broken image size could be distinguished from a broken image size of a non-existent protocol handler. This allowed an attacker to successfully probe whether an external protocol handler was registered. This vulnerability affects Firefox < 82.(CVE-2020-15680)

When multiple WASM threads had a reference to a module, and were looking up exported functions, one WASM thread could have overwritten another's entry in a shared stub table, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 82.(CVE-2020-15681)

When a link to an external protocol was clicked, a prompt was presented that allowed the user to choose what application to open it in. An attacker could induce that prompt to be associated with an origin they didn't control, resulting in a spoofing attack. This was fixed by changing external protocol prompts to be tab-modal while also ensuring they could not be incorrectly associated with a different origin. This vulnerability affects Firefox < 82.(CVE-2020-15682)

Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. 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 ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.(CVE-2020-15683)

Mozilla developers reported memory safety bugs present in Firefox 81. 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 < 82.(CVE-2020-15684)

Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to leak cross-origin data via a crafted HTML page.(CVE-2020-16012)

Use after free in WebRTC in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially exploit heap corruption via a crafted SCTP packet.(CVE-2020-16044)

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.(CVE-2020-26950)

(CVE-2020-26951)

(CVE-2020-26953) …

Mozilla Firefox is a standalone web browser, designed for standards compliance and performance. Its functionality can be enhanced via a plethora of extensions.

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

Security Fix(es):

Mozilla developers reported memory safety bugs present in Firefox for Android 79. 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 < 80, Firefox ESR < 78.2, Thunderbird < 78.2, and Firefox for Android < 80.(CVE-2020-15670)

Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. 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 < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.(CVE-2020-15673)

Mozilla developers reported memory safety bugs present in Firefox 80. 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 < 81.(CVE-2020-15674)

When processing surfaces, the lifetime may outlive a persistent buffer leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 81.(CVE-2020-15675)

If a valid external protocol handler was referenced in an image tag, the resulting broken image size could be distinguished from a broken image size of a non-existent protocol handler. This allowed an attacker to successfully probe whether an external protocol handler was registered. This vulnerability affects Firefox < 82.(CVE-2020-15680)

When multiple WASM threads had a reference to a module, and were looking up exported functions, one WASM thread could have overwritten another's entry in a shared stub table, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 82.(CVE-2020-15681)

When a link to an external protocol was clicked, a prompt was presented that allowed the user to choose what application to open it in. An attacker could induce that prompt to be associated with an origin they didn't control, resulting in a spoofing attack. This was fixed by changing external protocol prompts to be tab-modal while also ensuring they could not be incorrectly associated with a different origin. This vulnerability affects Firefox < 82.(CVE-2020-15682)

Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. 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 ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.(CVE-2020-15683)

Mozilla developers reported memory safety bugs present in Firefox 81. 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 < 82.(CVE-2020-15684)

Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to leak cross-origin data via a crafted HTML page.(CVE-2020-16012)

Use after free in WebRTC in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially exploit heap corruption via a crafted SCTP packet.(CVE-2020-16044)

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.(CVE-2020-26950)

(CVE-2020-26951)

(CVE-2020-26953) …

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

This update upgrades Firefox to version 91.7.0 ESR.

Security Fix(es):

• Mozilla: Use-after-free in XSLT parameter processing (CVE-2022-26485)

• Mozilla: Use-after-free in WebGPU IPC Framework (CVE-2022-26486)

• expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)

• expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution (CVE-2022-25236)

• expat: Integer overflow in storeRawNames() (CVE-2022-25315)

• Mozilla: Use-after-free in text reflows (CVE-2022-26381)

• Mozilla: Browser window spoof using fullscreen mode (CVE-2022-26383)

• Mozilla: iframe allow-scripts sandbox bypass (CVE-2022-26384)

• Mozilla: Time-of-check time-of-use bug when verifying add-on signatures (CVE-2022-26387)

• Mozilla: Temporary files downloaded to /tmp and accessible by other local users (CVE-2022-26386)

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 91.7.0.

Security Fix(es):

• Mozilla: Use-after-free in XSLT parameter processing (CVE-2022-26485)

• Mozilla: Use-after-free in WebGPU IPC Framework (CVE-2022-26486)

• expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)

• expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution (CVE-2022-25236)

• expat: Integer overflow in storeRawNames() (CVE-2022-25315)

• Mozilla: Use-after-free in text reflows (CVE-2022-26381)

• Mozilla: Browser window spoof using fullscreen mode (CVE-2022-26383)

• Mozilla: iframe allow-scripts sandbox bypass (CVE-2022-26384)

• Mozilla: Time-of-check time-of-use bug when verifying add-on signatures (CVE-2022-26387)

• thunderbird: Crafted email could trigger an out-of-bounds write (CVE-2022-0566)

• Mozilla: Temporary files downloaded to /tmp and accessible by other local users (CVE-2022-26386)

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.

Previously Firefox for macOS and Linux would download temporary files to a user-specific directory in <code>/tmp</code>, but this behavior was changed to download them to <code>/tmp</code> where they could be affected by other local users. This behavior was reverted to the original, user-specific directory. <br>This bug only affects Firefox for macOS and Linux. Other operating systems are unaffected.. This vulnerability affects Firefox ESR < 91.7 and Thunderbird < 91.7.

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

This update upgrades Firefox to version 91.7.0 ESR.

Security Fix(es):

• Mozilla: Use-after-free in XSLT parameter processing (CVE-2022-26485)

• Mozilla: Use-after-free in WebGPU IPC Framework (CVE-2022-26486)

• expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)

• expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution (CVE-2022-25236)

• expat: Integer overflow in storeRawNames() (CVE-2022-25315)

• Mozilla: Use-after-free in text reflows (CVE-2022-26381)

• Mozilla: Browser window spoof using fullscreen mode (CVE-2022-26383)

• Mozilla: iframe allow-scripts sandbox bypass (CVE-2022-26384)

• Mozilla: Time-of-check time-of-use bug when verifying add-on signatures (CVE-2022-26387)

• Mozilla: Temporary files downloaded to /tmp and accessible by other local users (CVE-2022-26386)

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 91.7.0.

Security Fix(es):

• Mozilla: Use-after-free in XSLT parameter processing (CVE-2022-26485)

• Mozilla: Use-after-free in WebGPU IPC Framework (CVE-2022-26486)

• expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)

• expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution (CVE-2022-25236)

• expat: Integer overflow in storeRawNames() (CVE-2022-25315)

• Mozilla: Use-after-free in text reflows (CVE-2022-26381)

• Mozilla: Browser window spoof using fullscreen mode (CVE-2022-26383)

• Mozilla: iframe allow-scripts sandbox bypass (CVE-2022-26384)

• Mozilla: Time-of-check time-of-use bug when verifying add-on signatures (CVE-2022-26387)

• thunderbird: Crafted email could trigger an out-of-bounds write (CVE-2022-0566)

• Mozilla: Temporary files downloaded to /tmp and accessible by other local users (CVE-2022-26386)

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.

An attacker could have caused a use-after-free by forcing a text reflow in an SVG object leading to a potentially exploitable crash (CVE-2022-26381).

When resizing a popup after requesting fullscreen access, the popup would not display the fullscreen notification (CVE-2022-26383).

If an attacker could control the contents of an iframe sandboxed with allow-popups but not allow-scripts, they were able to craft a link that, when clicked, would lead to JavaScript execution in violation of the sandbox (CVE-2022-26384).

Previously Firefox for macOS and Linux would download temporary files to a user-specific directory in /tmp, but this behavior was changed to download them to /tmp where they could be affected by other local users. This behavior was reverted to the original, user-specific directory (CVE-2022-26386).

When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified and Firefox would not have noticed (CVE-2022-26387).

An attacker could have caused a use-after-free by forcing a text reflow in an SVG object leading to a potentially exploitable crash (CVE-2022-26381).

When resizing a popup after requesting fullscreen access, the popup would not display the fullscreen notification (CVE-2022-26383).

If an attacker could control the contents of an iframe sandboxed with allow-popups but not allow-scripts, they were able to craft a link that, when clicked, would lead to JavaScript execution in violation of the sandbox (CVE-2022-26384).

Previously Thunderbird for macOS and Linux would download temporary files to a user-specific directory in /tmp, but this behavior was changed to download them to /tmp where they could be affected by other local users. This behavior was reverted to the original, user-specific directory (CVE-2022-26386).

When installing an add-on, Thunderbird verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified and Thunderbird would not have noticed (CVE-2022-26387).

This update for MozillaFirefox fixes the following issues:

Firefox Extended Support Release 91.7.0 ESR (bsc#1196900):

• CVE-2022-26383: Browser window spoof using fullscreen mode
• CVE-2022-26384: iframe allow-scripts sandbox bypass
• CVE-2022-26387: Time-of-check time-of-use bug when verifying add-on signatures
• CVE-2022-26381: Use-after-free in text reflows
• CVE-2022-26386: Temporary files downloaded to /tmp and accessible by other local users

This update for MozillaThunderbird fixes the following issues:

Updated to version 91.7 (bsc#1196900):

• CVE-2022-26381: Fixed an invalid memory access due to text reflow when SVG objects were present.
• CVE-2022-26383: Fixed an issue where, when resizing a popup after requesting fullscreen access, the popup would not display the fullscreen notification.
• CVE-2022-26384: Fixed an iframe XSS sandbox bypass when allow-popups was used on the iframe.
• CVE-2022-26386: Fixed an issue where downloadable temporary files were accessible to other local users.
• CVE-2022-26387: Fixed a potential add-on signature verification bypass due to a race condition.

These are all security issues fixed in the MozillaThunderbird-91.7.0-1.1 package on the GA media of openSUSE Tumbleweed.

This update for MozillaFirefox fixes the following issues:

Firefox Extended Support Release 91.7.0 ESR (bsc#1196900):

• CVE-2022-26383: Browser window spoof using fullscreen mode
• CVE-2022-26384: iframe allow-scripts sandbox bypass
• CVE-2022-26387: Time-of-check time-of-use bug when verifying add-on signatures
• CVE-2022-26381: Use-after-free in text reflows
• CVE-2022-26386: Temporary files downloaded to /tmp and accessible by other local users

This update for MozillaFirefox fixes the following issues:

Firefox Extended Support Release 91.7.0 ESR (bsc#1196900):

• CVE-2022-26383: Browser window spoof using fullscreen mode
• CVE-2022-26384: iframe allow-scripts sandbox bypass
• CVE-2022-26387: Time-of-check time-of-use bug when verifying add-on signatures
• CVE-2022-26381: Use-after-free in text reflows
• CVE-2022-26386: Temporary files downloaded to /tmp and accessible by other local users

This update for MozillaFirefox fixes the following issues:

Firefox Extended Support Release 91.7.0 ESR (bsc#1196900):

• CVE-2022-26383: Browser window spoof using fullscreen mode
• CVE-2022-26384: iframe allow-scripts sandbox bypass
• CVE-2022-26387: Time-of-check time-of-use bug when verifying add-on signatures
• CVE-2022-26381: Use-after-free in text reflows
• CVE-2022-26386: Temporary files downloaded to /tmp and accessible by other local users

This update for MozillaThunderbird fixes the following issues:

Updated to version 91.7 (bsc#1196900):

• CVE-2022-26381: Fixed an invalid memory access due to text reflow when SVG objects were present.
• CVE-2022-26383: Fixed an issue where, when resizing a popup after requesting fullscreen access, the popup would not display the fullscreen notification.
• CVE-2022-26384: Fixed an iframe XSS sandbox bypass when allow-popups was used on the iframe.
• CVE-2022-26386: Fixed an issue where downloadable temporary files were accessible to other local users.
• CVE-2022-26387: Fixed a potential add-on signature verification bypass due to a race condition.

This update for MozillaFirefox fixes the following issues:

Firefox Extended Support Release 91.7.0 ESR (bsc#1196900):

• CVE-2022-26383: Browser window spoof using fullscreen mode
• CVE-2022-26384: iframe allow-scripts sandbox bypass
• CVE-2022-26387: Time-of-check time-of-use bug when verifying add-on signatures
• CVE-2022-26381: Use-after-free in text reflows
• CVE-2022-26386: Temporary files downloaded to /tmp and accessible by other local users

Firefox Extended Support Release 91.6.1 ESR (bsc#1196809):

• CVE-2022-26485: Use-after-free in XSLT parameter processing
• CVE-2022-26486: Use-after-free in WebGPU IPC Framework

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, bypass security restrictions, obtain sensitive information, cause undefined behaviour, spoof the browser UI, or execute arbitrary code. (CVE-2022-22759, CVE-2022-22760, CVE-2022-22761, CVE-2022-22763, CVE-2022-22764, CVE-2022-26381, CVE-2022-26383, CVE-2022-26384)

It was discovered that extensions of a particular type could auto-update themselves and bypass the prompt that requests permissions. If a user were tricked into installing a specially crafted extension, an attacker could potentially exploit this to bypass security restrictions. (CVE-2022-22754)

It was discovered that dragging and dropping an image into a folder could result in it being marked as executable. If a user were tricked into dragging and dropping a specially crafted image, an attacker could potentially exploit this to execute arbitrary code. (CVE-2022-22756)

It was discovered that files downloaded to /tmp were accessible to other users. A local attacker could exploit this to obtain sensitive information. (CVE-2022-26386)

A TOCTOU bug was discovered when verifying addon signatures during install. A local attacker could potentially exploit this to trick a user into installing an addon with an invalid signature. (CVE-2022-26387)

An out-of-bounds write by one byte was discovered when processing messages in some circumstances. If a user were tricked into opening a specially crafted message, an attacker could potentially exploit this to cause a denial of service. (CVE-2022-0566)