The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Race conditions in reference counting code were found through code inspection. These could have resulted     in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116,     Firefox ESR < 102.14, and Firefox ESR < 115.1. (CVE-2023-4049)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6267-1 advisory.

    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, obtain     sensitive information across domains, or execute arbitrary code. (CVE-2023-4047, CVE-2023-4048,     CVE-2023-4049, CVE-2023-4051, CVE-2023-4053, CVE-2023-4055, CVE-2023-4056, CVE-2023-4057, CVE-2023-4058)

    Max Vlasov discovered that Firefox Offscreen Canvas did not properly track cross-origin tainting. An     attacker could potentially exploit this issue to access image data from another site in violation of same-     origin policy. (CVE-2023-4045)

    Alexander Guryanov discovered that Firefox did not properly update the value of a global variable in WASM     JIT analysis in some circumstances. An attacker could potentially exploit this issue to cause a denial of     service. (CVE-2023-4046)

    Mark Brand discovered that Firefox did not properly validate the size of an untrusted input stream. An     attacker could potentially exploit this issue to cause a denial of service. (CVE-2023-4050)

Tenable has extracted the preceding description block directly from the Ubuntu 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-2023:4464 advisory.

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

    This update upgrades Firefox to version 102.14.0 ESR.

    Security Fix(es):

    * Mozilla: Offscreen Canvas could have bypassed cross-origin restrictions (CVE-2023-4045)

    * Mozilla: Incorrect value used during WASM compilation (CVE-2023-4046)

    * Mozilla: Potential permissions request bypass via clickjacking (CVE-2023-4047)

    * Mozilla: Crash in DOMParser due to out-of-memory conditions (CVE-2023-4048)

    * Mozilla: Fix potential race conditions when releasing platform objects (CVE-2023-4049)

    * Mozilla: Stack buffer overflow in StorageManager (CVE-2023-4050)

    * Mozilla: Memory safety bugs fixed in Firefox 116, Firefox ESR 115.1, Firefox ESR 102.14, Thunderbird     115.1, and Thunderbird 102.14 (CVE-2023-4056)

    * Mozilla: Memory safety bugs fixed in Firefox 116, Firefox ESR 115.1, and Thunderbird 115.1     (CVE-2023-4057)

    * Mozilla: Cookie jar overflow caused unexpected cookie jar state (CVE-2023-4055)

    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-2023:4460 advisory.

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

    This update upgrades Firefox to version 102.14.0 ESR.

    Security Fix(es):

    * Mozilla: Offscreen Canvas could have bypassed cross-origin restrictions (CVE-2023-4045)

    * Mozilla: Incorrect value used during WASM compilation (CVE-2023-4046)

    * Mozilla: Potential permissions request bypass via clickjacking (CVE-2023-4047)

    * Mozilla: Crash in DOMParser due to out-of-memory conditions (CVE-2023-4048)

    * Mozilla: Fix potential race conditions when releasing platform objects (CVE-2023-4049)

    * Mozilla: Stack buffer overflow in StorageManager (CVE-2023-4050)

    * Mozilla: Memory safety bugs fixed in Firefox 116, Firefox ESR 115.1, Firefox ESR 102.14, Thunderbird     115.1, and Thunderbird 102.14 (CVE-2023-4056)

    * Mozilla: Memory safety bugs fixed in Firefox 116, Firefox ESR 115.1, and Thunderbird 115.1     (CVE-2023-4057)

    * Mozilla: Cookie jar overflow caused unexpected cookie jar state (CVE-2023-4055)

    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 Fedora 37 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-a4e8720e0f advisory.

    - Updated to latest upstream (116.0)

Tenable has extracted the preceding description block directly from the Fedora 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 mozilla-firefox installed on the remote host is prior to 115.1.0esr. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2023-216-01 advisory.

  - Offscreen Canvas did not properly track cross-origin tainting, which could have been used to access image     data from another site in violation of same-origin policy. This vulnerability affects Firefox < 116,     Firefox ESR < 102.14, and Firefox ESR < 115.1. (CVE-2023-4045)

  - In some circumstances, a stale value could have been used for a global variable in WASM JIT analysis. This     resulted in incorrect compilation and a potentially exploitable crash in the content process. This     vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1. (CVE-2023-4046)

  - A bug in popup notifications delay calculation could have made it possible for an attacker to trick a user     into granting permissions. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR     < 115.1. (CVE-2023-4047)

  - An out-of-bounds read could have led to an exploitable crash when parsing HTML with DOMParser in low     memory situations. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR <     115.1. (CVE-2023-4048)

  - Race conditions in reference counting code were found through code inspection. These could have resulted     in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116,     Firefox ESR < 102.14, and Firefox ESR < 115.1. (CVE-2023-4049)

  - In some cases, an untrusted input stream was copied to a stack buffer without checking its size. This     resulted in a potentially exploitable crash which could have led to a sandbox escape. This vulnerability     affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1. (CVE-2023-4050)

  - The Firefox updater created a directory writable by non-privileged users. When uninstalling Firefox, any     files in that directory would be recursively deleted with the permissions of the uninstalling user     account. This could be combined with creation of a junction (a form of symbolic link) to allow arbitrary     file deletion controlled by the non-privileged user. *This bug only affects Firefox on Windows. Other     operating systems are unaffected.* This vulnerability affects Firefox < 116 and Firefox ESR < 115.1.
    (CVE-2023-4052)

  - When opening appref-ms files, Firefox did not warn the user that these files may contain malicious code.
    *This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability     affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1. (CVE-2023-4054)

  - When the number of cookies per domain was exceeded in `document.cookie`, the actual cookie jar sent to the     host was no longer consistent with expected cookie jar state. This could have caused requests to be sent     with some cookies missing. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR     < 115.1. (CVE-2023-4055)

  - Memory safety bugs present in Firefox 115, Firefox ESR 115.0, Firefox ESR 102.13, Thunderbird 115.0, and     Thunderbird 102.13. 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 < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1. (CVE-2023-4056)

  - Memory safety bugs present in Firefox 115, Firefox ESR 115.0, and Thunderbird 115.0. 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 < 116 and Firefox ESR < 115.1.
    (CVE-2023-4057)

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

The remote Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2023-4461 advisory.

    [102.14.0-1.0.1]
    - Remove upstream references [Orabug: 30143292]
    - Update distribution for Oracle Linux [Orabug: 30143292]
    - Add firefox-oracle-default-prefs.js and remove the corresponding Red Hat file

    [102.14.0-1]
    - Update to 102.14.0 build1

Tenable has extracted the preceding description block directly from the Oracle 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 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2023:4495 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    This update upgrades Thunderbird to version 102.14.0.

    Security Fix(es):

    * Mozilla: Offscreen Canvas could have bypassed cross-origin restrictions (CVE-2023-4045)

    * Mozilla: Incorrect value used during WASM compilation (CVE-2023-4046)

    * Mozilla: Potential permissions request bypass via clickjacking (CVE-2023-4047)

    * Mozilla: Crash in DOMParser due to out-of-memory conditions (CVE-2023-4048)

    * Mozilla: Fix potential race conditions when releasing platform objects (CVE-2023-4049)

    * Mozilla: Stack buffer overflow in StorageManager (CVE-2023-4050)

    * Mozilla: Memory safety bugs fixed in Firefox 116, Firefox ESR 115.1, Firefox ESR 102.14, Thunderbird     115.1, and Thunderbird 102.14 (CVE-2023-4056)

    * Mozilla: Memory safety bugs fixed in Firefox ESR 115.1, and Thunderbird 115.1 (CVE-2023-4057)

    * thunderbird: File Extension Spoofing using the Text Direction Override Character (CVE-2023-3417)

    * Mozilla: Cookie jar overflow caused unexpected cookie jar state (CVE-2023-4055)

    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 Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2023-4495 advisory.

    [102.14.0-1.0.1]
    - Replaced thunderbird-redhat-default-prefs.js with thunderbird-oracle-default-prefs.js
    - Enabled aarch64 build

    [102.14.0-1]
    - Update to 102.14.0 build1

Tenable has extracted the preceding description block directly from the Oracle 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 NewStart CGSL host, running version MAIN 6.02, has firefox packages installed that are affected by multiple vulnerabilities:

  - crossbeam-deque is a package of work-stealing deques for building task schedulers when programming in     Rust. In versions prior to 0.7.4 and 0.8.0, the result of the race condition is that one or more tasks in     the worker queue can be popped twice instead of other tasks that are forgotten and never popped. If tasks     are allocated on the heap, this can cause double free and a memory leak. If not, this still can cause a     logical bug. Crates using `Stealer::steal`, `Stealer::steal_batch`, or `Stealer::steal_batch_and_pop` are     affected by this issue. This has been fixed in crossbeam-deque 0.8.1 and 0.7.4. (CVE-2021-32810)

  - Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. 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 < 78.14, Thunderbird < 78.14,     and Firefox < 92. (CVE-2021-38493)

  - During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in     memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15,     Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93. (CVE-2021-38496)

  - Through use of reportValidity() and window.open(), a plain-text validation message could have been     overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability     affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2. (CVE-2021-38497)

  - During process shutdown, a document could have caused a use-after-free of a languages service object,     leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93,     Thunderbird < 91.2, and Firefox ESR < 91.2. (CVE-2021-38498)

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
249782	Linux Distros Unpatched Vulnerability : CVE-2023-4049	Nessus	Misc.	8/15/2025	8/15/2025	medium
179203	Ubuntu 20.04 LTS : Firefox vulnerabilities (USN-6267-1)	Nessus	Ubuntu Local Security Checks	8/2/2023	8/27/2024	critical
179320	RHEL 8 : firefox (RHSA-2023:4464)	Nessus	Red Hat Local Security Checks	8/3/2023	11/7/2024	critical
179323	RHEL 8 : firefox (RHSA-2023:4460)	Nessus	Red Hat Local Security Checks	8/3/2023	11/7/2024	critical
179341	Fedora 37 : firefox (2023-a4e8720e0f)	Nessus	Fedora Local Security Checks	8/4/2023	11/14/2024	critical
179369	Slackware Linux 15.0 / current mozilla-firefox Multiple Vulnerabilities (SSA:2023-216-01)	Nessus	Slackware Local Security Checks	8/4/2023	8/4/2023	critical
179370	Oracle Linux 7 : firefox (ELSA-2023-4461)	Nessus	Oracle Linux Local Security Checks	8/4/2023	9/9/2025	critical
179397	RHEL 7 : thunderbird (RHSA-2023:4495)	Nessus	Red Hat Local Security Checks	8/7/2023	11/8/2024	critical
179856	Oracle Linux 7 : thunderbird (ELSA-2023-4495)	Nessus	Oracle Linux Local Security Checks	8/15/2023	9/9/2025	critical
206859	NewStart CGSL MAIN 6.02 : firefox Multiple Vulnerabilities (NS-SA-2024-0066)	Nessus	NewStart CGSL Local Security Checks	9/10/2024	3/6/2025	critical

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