The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0996 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    This update upgrades Thunderbird to version 78.9.0.

    Security Fix(es):

    * Mozilla: Texture upload into an unbound backing buffer resulted in an out-of-bound read (CVE-2021-23981)

    * Mozilla: Memory safety bugs fixed in Firefox 87 and Firefox ESR 78.9 (CVE-2021-23987)

    * Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

    * Mozilla: Malicious extensions could have spoofed popup information (CVE-2021-23984)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 78.9. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-12 advisory.

  - Mozilla developers and community members Alexis Beingessner, Tyson Smith, Julien Wajsberg, and Matthew     Gregan reported memory safety bugs present in Thunderbird 78.8. 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-2021-23987)

  - An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be     exploited. (CVE-2021-4127)

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    (CVE-2021-23981)

  - Using techniques that built on the slipstream research, a malicious webpage could have scanned both an     internal network's hosts as well as services running on the user's local machine utilizing WebRTC     connections. (CVE-2021-23982)

  - A malicious extension could have opened a popup window lacking an address bar. The title of the popup     lacking an address bar should not be fully controllable, but in this situation was. This could have been     used to spoof a website and attempt to trick the user into providing credentials. (CVE-2021-23984)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0992 advisory.

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9. (CVE-2021-23981)

  - Using techniques that built on the slipstream research, a malicious webpage could have scanned both an     internal network's hosts as well as services running on the user's local machine utilizing WebRTC     connections. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
    (CVE-2021-23982)

  - A malicious extension could have opened a popup window lacking an address bar. The title of the popup     lacking an address bar should not be fully controllable, but in this situation was. This could have been     used to spoof a website and attempt to trick the user into providing credentials. This vulnerability     affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9. (CVE-2021-23984)

  - Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR     78.8. 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 < 78.9,     Firefox < 87, and Thunderbird < 78.9. (CVE-2021-23987)

  - 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-2021-4127)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0991 advisory.

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

    This update upgrades Firefox to version 78.9.0 ESR.

    Security Fix(es):

    * Mozilla: Texture upload into an unbound backing buffer resulted in an out-of-bound read (CVE-2021-23981)

    * Mozilla: Memory safety bugs fixed in Firefox 87 and Firefox ESR 78.9 (CVE-2021-23987)

    * Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

    * Mozilla: Malicious extensions could have spoofed popup information (CVE-2021-23984)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of thunderbird installed on the remote host is prior to 102.7.1-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-1951 advisory.

    2025-01-30: CVE-2022-31744 was added to this advisory.

    2025-01-30: CVE-2022-3155 was added to this advisory.

    2024-05-23: CVE-2023-0430 was added to this advisory.

    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-2021-4127)

    Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith,     Christian Holler, and Masayuki Nakano reported memory safety bugs present in Firefox 94. 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 < 95, Firefox ESR < 91.4.0, and     Thunderbird < 91.4.0. (CVE-2021-4129)

    A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue of if an     attacker corrupted an object prototype, they could set undesired attributes on a JavaScript object,     leading to privileged code execution. (CVE-2022-2200)

    A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue that Thunderbird     did not set the attribute com.apple.quarantine on the received file when saving or opening an email     attachment on macOS. If the received file was an application and the user attempted to open it, the     application was started immediately without asking the user to confirm. (CVE-2022-3155)

    An attacker could have injected CSS into stylesheets accessible via internal URIs, such as resource:, and     in doing so bypass a page's Content Security Policy. This vulnerability affects Firefox ESR < 91.11,     Thunderbird < 102, Thunderbird < 91.11, and Firefox < 101. (CVE-2022-31744)

    An out-of-bounds read can occur when decoding H264 video. This results in a potentially exploitable crash.
    This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105. (CVE-2022-3266)

    An iframe that was not permitted to run scripts could do so if the user clicked on a     <code>javascript:</code> link. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird     < 102, and Thunderbird < 91.11. (CVE-2022-34468)

    Session history navigations may have led to a use-after-free and potentially exploitable crash. This     vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
    (CVE-2022-34470)

    A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue that if a PAC     URL was set and the server that hosts the PAC was not reachable, OCSP requests are blocked, resulting in     incorrect error pages being shown. (CVE-2022-34472)

    A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue of a malicious     website that creates a popup that could have resized the popup to overlay the address bar with its own     content, resulting in potential user confusion or spoofing attacks. (CVE-2022-34479)

    A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue within the     `nsTArray_Impl::ReplaceElementsAt()` function, where an integer overflow could occur when the number of     elements to replace was too large for the container. (CVE-2022-34481)

    The Mozilla Fuzzing Team reported potential vulnerabilities present in Thunderbird 91.10. 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 < 102, Firefox ESR < 91.11,     Thunderbird < 102, and Thunderbird < 91.11. (CVE-2022-34484)

    A stack based buffer overflow vulnerability was identified in Mozilla Firefox and Firefox ESR. This     vulnerability occurs when the buffer being overwritten is allocated on the stack (i.e., is a local     variable or, rarely, a parameter to a function). An attacker could cause of denial-of-service style crash     by exploiting this vulnerability. To exploit this vulnerability, a remote, unauthenticated attacker would     need to convince a user to visit a specially crafted website or open a malicious document.
    (CVE-2022-40961)

    If a Thunderbird user quoted from an HTML email, for example by replying to the email, and the email     contained either a VIDEO tag with the POSTER attribute or an OBJECT tag with a DATA attribute, a network     request to the referenced remote URL was performed, regardless of a configuration to block remote content.
    An image loaded from the POSTER attribute was shown in the composer window. These issues could have given     an attacker additional capabilities when targetting releases that did not yet have a fix for CVE-2022-3033     which was reported around three months ago. This vulnerability affects Thunderbird < 102.5.1.
    (CVE-2022-45414)

    RESERVEDNOTE: https://www.mozilla.org/en-US/security/advisories/mfsa2022-51/#CVE-2022-46871     (CVE-2022-46871)

    The Mozilla Foundation Security Advisory describes this flaw as: An attacker who compromised a content     process could have partially escaped the sandbox to read arbitrary files via clipboard-related IPC     messages.

    *This bug only affects Firefox for Linux. Other operating systems are unaffected.* (CVE-2022-46872)

    A file with a long filename could have had its filename truncated to remove the valid extension, leaving a     malicious extension in its place. This could potentially led to user confusion and the execution of     malicious code.<br/>*Note*: This issue was originally included in the advisories for Thunderbird 102.6,     but a patch (specific to Thunderbird) was omitted, resulting in it actually being fixed in Thunderbird     102.6.1. This vulnerability affects Firefox < 108, Thunderbird < 102.6.1, Thunderbird < 102.6, and Firefox     ESR < 102.6. (CVE-2022-46874)

    By confusing the browser, the fullscreen notification could have been delayed or suppressed, resulting in     potential user confusion or spoofing attacks. This vulnerability affects Firefox < 108. (CVE-2022-46877)

    Mozilla developers Randell Jesup, Valentin Gosu, Olli Pettay, and the Mozilla Fuzzing Team reported memory     safety bugs present in Thunderbird 102.5. 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     vulnerability affects Firefox < 108, Firefox ESR < 102.6, and Thunderbird < 102.6. (CVE-2022-46878)

    A missing check related to tex units could have led to a use-after-free and potentially exploitable     crash.<br />*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 affects     Firefox ESR < 102.6, Firefox < 105, and Thunderbird < 102.6. (CVE-2022-46880)

    The Mozilla Foundation Security Advisory describes this flaw as: An optimization in WebGL was incorrect in     some cases, and could have led to memory corruption and a potentially exploitable crash. (CVE-2022-46881)

    The Mozilla Foundation Security Advisory describes this flaw as: A use-after-free in WebGL extensions     could have led to a potentially exploitable crash. (CVE-2022-46882)

    Certificate OCSP revocation status was not checked when verifying S/Mime signatures. Mail signed with a     revoked certificate would be displayed as having a valid signature. Thunderbird versions from 68 to     102.7.0 were affected by this bug. This vulnerability affects Thunderbird < 102.7.1. (CVE-2023-0430)

    The Mozilla Foundation Security Advisory describes this flaw as:

    Due to the Firefox GTK wrapper code's use of text/plain for drag data and GTK treating all text/plain     MIMEs containing file URLs as being dragged a website could arbitrarily read a file via a call to     DataTransfer.setData. (CVE-2023-23598)

    The Mozilla Foundation Security Advisory describes this flaw as:

    When copying a network request from the developer tools panel as a curl command the output was not being     properly sanitized and could allow arbitrary commands to be hidden within. (CVE-2023-23599)

    The Mozilla Foundation Security Advisory describes this flaw as:

    Navigations were being allowed when dragging a URL from a cross-origin iframe into the same tab which     could lead to website spoofing attacks (CVE-2023-23601)

    The Mozilla Foundation Security Advisory describes this flaw as:

    A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy     connect-src header to be ignored. This could lead to connections to restricted origins from inside     WebWorkers. (CVE-2023-23602)

    Regular expressions used to filter out forbidden properties and values from style directives in calls to     console.log weren't accounting for external URLs. Data could then be potentially exfiltrated from the     browser. (CVE-2023-23603)

    The Mozilla Foundation Security Advisory describes this flaw as:

    Mozilla developers and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 108 and     Firefox ESR 102.6. 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-2023-23605)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0993 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    This update upgrades Thunderbird to version 78.9.0.

    Security Fix(es):

    * Mozilla: Texture upload into an unbound backing buffer resulted in an out-of-bound read (CVE-2021-23981)

    * Mozilla: Memory safety bugs fixed in Firefox 87 and Firefox ESR 78.9 (CVE-2021-23987)

    * Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

    * Mozilla: Malicious extensions could have spoofed popup information (CVE-2021-23984)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0996 advisory.

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9. (CVE-2021-23981)

  - Using techniques that built on the slipstream research, a malicious webpage could have scanned both an     internal network's hosts as well as services running on the user's local machine utilizing WebRTC     connections. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
    (CVE-2021-23982)

  - A malicious extension could have opened a popup window lacking an address bar. The title of the popup     lacking an address bar should not be fully controllable, but in this situation was. This could have been     used to spoof a website and attempt to trick the user into providing credentials. This vulnerability     affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9. (CVE-2021-23984)

  - Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox ESR     78.8. 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 < 78.9,     Firefox < 87, and Thunderbird < 78.9. (CVE-2021-23987)

  - 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-2021-4127)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 78.9. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-11 advisory.

  - Mozilla developers and community members Alexis Beingessner, Tyson Smith, Julien Wajsberg, and Matthew     Gregan reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. 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-2021-23987)

  - An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be     exploited. (CVE-2021-4127)

  - A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an attacker to     leak arbitrary memory addresses and may have also enabled JIT type confusion attacks. (A related     vulnerability, Speculative Code Store Bypass (SCSB), did not affect Firefox.) (CVE-2021-29955)

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    (CVE-2021-23981)

  - Using techniques that built on the slipstream research, a malicious webpage could have scanned both an     internal network's hosts as well as services running on the user's local machine utilizing WebRTC     connections. (CVE-2021-23982)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0994 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    This update upgrades Thunderbird to version 78.9.0.

    Security Fix(es):

    * Mozilla: Texture upload into an unbound backing buffer resulted in an out-of-bound read (CVE-2021-23981)

    * Mozilla: Memory safety bugs fixed in Firefox 87 and Firefox ESR 78.9 (CVE-2021-23987)

    * Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

    * Mozilla: Malicious extensions could have spoofed popup information (CVE-2021-23984)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0995 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    This update upgrades Thunderbird to version 78.9.0.

    Security Fix(es):

    * Mozilla: Texture upload into an unbound backing buffer resulted in an out-of-bound read (CVE-2021-23981)

    * Mozilla: Memory safety bugs fixed in Firefox 87 and Firefox ESR 78.9 (CVE-2021-23987)

    * Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

    * Mozilla: Malicious extensions could have spoofed popup information (CVE-2021-23984)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox ESR installed on the remote Windows host is prior to 78.9. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-11 advisory.

  - Mozilla developers and community members Alexis Beingessner, Tyson Smith, Julien Wajsberg, and Matthew     Gregan reported memory safety bugs present in Firefox 86 and Firefox ESR 78.8. 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-2021-23987)

  - An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be     exploited. (CVE-2021-4127)

  - A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an attacker to     leak arbitrary memory addresses and may have also enabled JIT type confusion attacks. (A related     vulnerability, Speculative Code Store Bypass (SCSB), did not affect Firefox.) (CVE-2021-29955)

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    (CVE-2021-23981)

  - Using techniques that built on the slipstream research, a malicious webpage could have scanned both an     internal network's hosts as well as services running on the user's local machine utilizing WebRTC     connections. (CVE-2021-23982)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0992 advisory.

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

    This update upgrades Firefox to version 78.9.0 ESR.

    Security Fix(es):

    * Mozilla: Texture upload into an unbound backing buffer resulted in an out-of-bound read (CVE-2021-23981)

    * Mozilla: Memory safety bugs fixed in Firefox 87 and Firefox ESR 78.9 (CVE-2021-23987)

    * Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

    * Mozilla: Malicious extensions could have spoofed popup information (CVE-2021-23984)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0989 advisory.

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

    This update upgrades Firefox to version 78.9.0 ESR.

    Security Fix(es):

    * Mozilla: Texture upload into an unbound backing buffer resulted in an out-of-bound read (CVE-2021-23981)

    * Mozilla: Memory safety bugs fixed in Firefox 87 and Firefox ESR 78.9 (CVE-2021-23987)

    * Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

    * Mozilla: Malicious extensions could have spoofed popup information (CVE-2021-23984)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0990 advisory.

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

    This update upgrades Firefox to version 78.9.0 ESR.

    Security Fix(es):

    * Mozilla: Texture upload into an unbound backing buffer resulted in an out-of-bound read (CVE-2021-23981)

    * Mozilla: Memory safety bugs fixed in Firefox 87 and Firefox ESR 78.9 (CVE-2021-23987)

    * Mozilla: Internal network hosts could have been probed by a malicious webpage (CVE-2021-23982)

    * Mozilla: Malicious extensions could have spoofed popup information (CVE-2021-23984)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Thunderbird installed on the remote Windows host is prior to 78.9. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-12 advisory.

  - Mozilla developers and community members Alexis Beingessner, Tyson Smith, Julien Wajsberg, and Matthew     Gregan reported memory safety bugs present in Thunderbird 78.8. 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-2021-23987)

  - An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be     exploited. (CVE-2021-4127)

  - A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer     used to unpack it, resulting in memory corruption and a potentially exploitable information leak or crash.
    (CVE-2021-23981)

  - Using techniques that built on the slipstream research, a malicious webpage could have scanned both an     internal network's hosts as well as services running on the user's local machine utilizing WebRTC     connections. (CVE-2021-23982)

  - A malicious extension could have opened a popup window lacking an address bar. The title of the popup     lacking an address bar should not be fully controllable, but in this situation was. This could have been     used to spoof a website and attempt to trick the user into providing credentials. (CVE-2021-23984)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
148113	RHEL 7 : thunderbird (RHSA-2021:0996)	Nessus	Red Hat Local Security Checks	3/25/2021	11/7/2024	critical
148109	Mozilla Thunderbird < 78.9	Nessus	MacOS X Local Security Checks	3/25/2021	11/18/2025	critical
148184	CentOS 7 : firefox (RHSA-2021:0992)	Nessus	CentOS Local Security Checks	3/26/2021	10/9/2024	critical
148119	RHEL 8 : firefox (RHSA-2021:0991)	Nessus	Red Hat Local Security Checks	3/25/2021	11/7/2024	critical
171818	Amazon Linux 2 : thunderbird (ALAS-2023-1951)	Nessus	Amazon Linux Local Security Checks	2/23/2023	2/3/2025	critical
148116	RHEL 8 : thunderbird (RHSA-2021:0993)	Nessus	Red Hat Local Security Checks	3/25/2021	11/7/2024	critical
148185	CentOS 7 : thunderbird (RHSA-2021:0996)	Nessus	CentOS Local Security Checks	3/26/2021	10/9/2024	critical
148013	Mozilla Firefox ESR < 78.9	Nessus	MacOS X Local Security Checks	3/23/2021	11/18/2025	critical
148121	RHEL 8 : thunderbird (RHSA-2021:0994)	Nessus	Red Hat Local Security Checks	3/25/2021	11/7/2024	critical
148115	RHEL 8 : thunderbird (RHSA-2021:0995)	Nessus	Red Hat Local Security Checks	3/25/2021	11/7/2024	critical
148012	Mozilla Firefox ESR < 78.9	Nessus	Windows	3/23/2021	11/18/2025	critical
148114	RHEL 7 : firefox (RHSA-2021:0992)	Nessus	Red Hat Local Security Checks	3/25/2021	11/7/2024	critical
148118	RHEL 8 : firefox (RHSA-2021:0989)	Nessus	Red Hat Local Security Checks	3/25/2021	11/7/2024	critical
148120	RHEL 8 : firefox (RHSA-2021:0990)	Nessus	Red Hat Local Security Checks	3/25/2021	11/7/2024	critical
148110	Mozilla Thunderbird < 78.9	Nessus	Windows	3/25/2021	11/18/2025	critical

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