The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 60.2. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2018-21 advisory.

  - A use-after-free vulnerability can occur when an IndexedDB index is deleted while still in use by     JavaScript code that is providing payload values to be stored. This results in a potentially exploitable     crash. (CVE-2018-12378)

  - A use-after-free vulnerability can occur when refresh driver timers are refreshed in some circumstances     during shutdown when the timer is deleted while still in use. This results in a potentially exploitable     crash. (CVE-2018-12377)

  - A same-origin policy violation allowing the theft of cross-origin URL entries when using a     <code><meta> meta http-equiv=refresh</code> on a page to cause a redirection to another site using     <code>performance.getEntries()</code>. This is a same-origin policy violation and could allow for data     theft. (CVE-2018-18499)

  - When the Mozilla Updater opens a MAR format file which contains a very long item filename, an out-of-     bounds write can be triggered, leading to a potentially exploitable crash. This requires running the     Mozilla Updater manually on the local system with the malicious MAR file in order to occur.
    (CVE-2018-12379)

  - Browser proxy settings can be bypassed by using the automount feature with autofs to create a mount point     on the local file system. Content can be loaded from this mounted file system directly using a     <code>file:</code> URI, bypassing configured proxy settings.  Note: this issue only affects OS X in     default configurations. On Linux systems, autofs must be installed for the vulnerability to occur and     Windows is not affected. (CVE-2017-16541)

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

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

  - A same-origin policy violation allowing the theft of cross-origin URL entries when using a meta http-     equiv=refresh on a page to cause a redirection to another site using performance.getEntries(). This is a     same-origin policy violation and could allow for data theft. This vulnerability affects Firefox < 62,     Firefox ESR < 60.2, and Thunderbird < 60.2.1. (CVE-2018-18499)

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

The remote Redhat Enterprise Linux 6 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2018:2693 advisory.

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

    This update upgrades Firefox to version 60.2.0 ESR.

    Security Fix(es):

    * Mozilla: Memory safety bugs fixed in Firefox 62 and Firefox ESR 60.2 (CVE-2018-12376)

    * Mozilla: Use-after-free in driver timers (CVE-2018-12377)

    * Mozilla: Use-after-free in IndexedDB (CVE-2018-12378)

    * Mozilla: Proxy bypass using automount and autofs (CVE-2017-16541)

    * Mozilla: Out-of-bounds write with malicious MAR file (CVE-2018-12379)

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

    Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Alex     Gaynor, Boris Zbarsky, Christoph Diehl, Christian Holler, Jason Kratzer, Jed Davis, Tyson Smith, Bogdan     Tara, Karl Tomlinson, Mats Palmgren, Nika Layzell, Ted Campbell, Nils, Zhanjia Song, and Holger Fuhrmannek     as the original reporters.

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 installed on the remote Windows host is prior to 62.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2018-20 advisory.

  - A use-after-free vulnerability can occur when an IndexedDB index is deleted while still in use by     JavaScript code that is providing payload values to be stored. This results in a potentially exploitable     crash. (CVE-2018-12378)

  - A use-after-free vulnerability can occur when refresh driver timers are refreshed in some circumstances     during shutdown when the timer is deleted while still in use. This results in a potentially exploitable     crash. (CVE-2018-12377)

  - A same-origin policy violation allowing the theft of cross-origin URL entries when using a     <code><meta> meta http-equiv=refresh</code> on a page to cause a redirection to another site using     <code>performance.getEntries()</code>. This is a same-origin policy violation and could allow for data     theft. (CVE-2018-18499)

  - When the Mozilla Updater opens a MAR format file which contains a very long item filename, an out-of-     bounds write can be triggered, leading to a potentially exploitable crash. This requires running the     Mozilla Updater manually on the local system with the malicious MAR file in order to occur.
    (CVE-2018-12379)

  - Browser proxy settings can be bypassed by using the automount feature with autofs to create a mount point     on the local file system. Content can be loaded from this mounted file system directly using a     <code>file:</code> URI, bypassing configured proxy settings.  Note: this issue only affects OS X in     default configurations. On Linux systems, autofs must be installed for the vulnerability to occur and     Windows is not affected. (CVE-2017-16541)

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 ESR installed on the remote macOS or Mac OS X host is prior to 60.2. It is, therefore, affected by multiple vulnerabilities, some of which allow code execution and potentially exploitable crashes.

The version of Thunderbird installed on the remote Windows host is prior to 60.2.1. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2018-25 advisory.

  - A use-after-free vulnerability can occur when an IndexedDB index is deleted while still in use by     JavaScript code that is providing payload values to be stored. This results in a potentially exploitable     crash. (CVE-2018-12378)

  - A use-after-free vulnerability can occur when refresh driver timers are refreshed in some circumstances     during shutdown when the timer is deleted while still in use. This results in a potentially exploitable     crash. (CVE-2018-12377)

  - A same-origin policy violation allowing the theft of cross-origin URL entries when using a     <code><meta> meta http-equiv=refresh</code> on a page to cause a redirection to another site using     <code>performance.getEntries()</code>. This is a same-origin policy violation and could allow for data     theft. (CVE-2018-18499)

  - When the Mozilla Updater opens a MAR format file which contains a very long item filename, an out-of-     bounds write can be triggered, leading to a potentially exploitable crash. This requires running the     Mozilla Updater manually on the local system with the malicious MAR file in order to occur.
    (CVE-2018-12379)

  - Browser proxy settings can be bypassed by using the automount feature with autofs to create a mount point     on the local file system. Content can be loaded from this mounted file system directly using a     <code>file:</code> URI, bypassing configured proxy settings.  Note: this issue only affects OS X in     default configurations. On Linux systems, autofs must be installed for the vulnerability to occur and     Windows is not affected. (CVE-2017-16541)

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-2018:3458 advisory.

  - Mozilla: Proxy bypass using automount and autofs (CVE-2017-16541)

  - Mozilla: Memory safety bugs fixed in Firefox 62 and Firefox ESR 60.2 (CVE-2018-12376)

  - Mozilla: Use-after-free in driver timers (CVE-2018-12377)

  - Mozilla: Use-after-free in IndexedDB (CVE-2018-12378)

  - Mozilla: Out-of-bounds write with malicious MAR file (CVE-2018-12379)

  - Mozilla: Setting a master password post-Firefox 58 does not delete unencrypted previously stored passwords     (CVE-2018-12383)

  - Mozilla: Crash in TransportSecurityInfo due to cached data (CVE-2018-12385)

  - Mozilla: Same-origin policy violation using meta refresh and performance.getEntries to steal cross-origin     URLs (CVE-2018-18499)

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 6 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2018:3403 advisory.

  - Mozilla: Proxy bypass using automount and autofs (CVE-2017-16541)

  - Mozilla: Memory safety bugs fixed in Firefox 62 and Firefox ESR 60.2 (CVE-2018-12376)

  - Mozilla: Use-after-free in driver timers (CVE-2018-12377)

  - Mozilla: Use-after-free in IndexedDB (CVE-2018-12378)

  - Mozilla: Out-of-bounds write with malicious MAR file (CVE-2018-12379)

  - Mozilla: Setting a master password post-Firefox 58 does not delete unencrypted previously stored passwords     (CVE-2018-12383)

  - Mozilla: Crash in TransportSecurityInfo due to cached data (CVE-2018-12385)

  - Mozilla: Same-origin policy violation using meta refresh and performance.getEntries to steal cross-origin     URLs (CVE-2018-18499)

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 macOS host is prior to 62. It is, therefore, affected by multiple vulnerabilities as noted in Mozilla Firefox stable channel update release notes for 2018/09/05. Please refer to the release notes for additional information. Note that Nessus has not attempted to exploit 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 60.2. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2018-21 advisory.

  - A use-after-free vulnerability can occur when an IndexedDB index is deleted while still in use by     JavaScript code that is providing payload values to be stored. This results in a potentially exploitable     crash. (CVE-2018-12378)

  - A use-after-free vulnerability can occur when refresh driver timers are refreshed in some circumstances     during shutdown when the timer is deleted while still in use. This results in a potentially exploitable     crash. (CVE-2018-12377)

  - A same-origin policy violation allowing the theft of cross-origin URL entries when using a     <code><meta> meta http-equiv=refresh</code> on a page to cause a redirection to another site using     <code>performance.getEntries()</code>. This is a same-origin policy violation and could allow for data     theft. (CVE-2018-18499)

  - When the Mozilla Updater opens a MAR format file which contains a very long item filename, an out-of-     bounds write can be triggered, leading to a potentially exploitable crash. This requires running the     Mozilla Updater manually on the local system with the malicious MAR file in order to occur.
    (CVE-2018-12379)

  - Browser proxy settings can be bypassed by using the automount feature with autofs to create a mount point     on the local file system. Content can be loaded from this mounted file system directly using a     <code>file:</code> URI, bypassing configured proxy settings.  Note: this issue only affects OS X in     default configurations. On Linux systems, autofs must be installed for the vulnerability to occur and     Windows is not affected. (CVE-2017-16541)

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-2018:2692 advisory.

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

    This update upgrades Firefox to version 60.2.0 ESR.

    Security Fix(es):

    * Mozilla: Memory safety bugs fixed in Firefox 62 and Firefox ESR 60.2 (CVE-2018-12376)

    * Mozilla: Use-after-free in driver timers (CVE-2018-12377)

    * Mozilla: Use-after-free in IndexedDB (CVE-2018-12378)

    * Mozilla: Proxy bypass using automount and autofs (CVE-2017-16541)

    * Mozilla: Out-of-bounds write with malicious MAR file (CVE-2018-12379)

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

    Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Alex     Gaynor, Boris Zbarsky, Christoph Diehl, Christian Holler, Jason Kratzer, Jed Davis, Tyson Smith, Bogdan     Tara, Karl Tomlinson, Mats Palmgren, Nika Layzell, Ted Campbell, Nils, Zhanjia Song, and Holger Fuhrmannek     as the original reporters.

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 installed on the remote macOS or Mac OS X host is prior to 62.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2018-20 advisory.

  - A use-after-free vulnerability can occur when an IndexedDB index is deleted while still in use by     JavaScript code that is providing payload values to be stored. This results in a potentially exploitable     crash. (CVE-2018-12378)

  - A use-after-free vulnerability can occur when refresh driver timers are refreshed in some circumstances     during shutdown when the timer is deleted while still in use. This results in a potentially exploitable     crash. (CVE-2018-12377)

  - A same-origin policy violation allowing the theft of cross-origin URL entries when using a     <code><meta> meta http-equiv=refresh</code> on a page to cause a redirection to another site using     <code>performance.getEntries()</code>. This is a same-origin policy violation and could allow for data     theft. (CVE-2018-18499)

  - When the Mozilla Updater opens a MAR format file which contains a very long item filename, an out-of-     bounds write can be triggered, leading to a potentially exploitable crash. This requires running the     Mozilla Updater manually on the local system with the malicious MAR file in order to occur.
    (CVE-2018-12379)

  - Browser proxy settings can be bypassed by using the automount feature with autofs to create a mount point     on the local file system. Content can be loaded from this mounted file system directly using a     <code>file:</code> URI, bypassing configured proxy settings.  Note: this issue only affects OS X in     default configurations. On Linux systems, autofs must be installed for the vulnerability to occur and     Windows is not affected. (CVE-2017-16541)

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 60.2.1. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2018-25 advisory.

  - A use-after-free vulnerability can occur when an IndexedDB index is deleted while still in use by     JavaScript code that is providing payload values to be stored. This results in a potentially exploitable     crash. (CVE-2018-12378)

  - A use-after-free vulnerability can occur when refresh driver timers are refreshed in some circumstances     during shutdown when the timer is deleted while still in use. This results in a potentially exploitable     crash. (CVE-2018-12377)

  - A same-origin policy violation allowing the theft of cross-origin URL entries when using a     <code><meta> meta http-equiv=refresh</code> on a page to cause a redirection to another site using     <code>performance.getEntries()</code>. This is a same-origin policy violation and could allow for data     theft. (CVE-2018-18499)

  - When the Mozilla Updater opens a MAR format file which contains a very long item filename, an out-of-     bounds write can be triggered, leading to a potentially exploitable crash. This requires running the     Mozilla Updater manually on the local system with the malicious MAR file in order to occur.
    (CVE-2018-12379)

  - Browser proxy settings can be bypassed by using the automount feature with autofs to create a mount point     on the local file system. Content can be loaded from this mounted file system directly using a     <code>file:</code> URI, bypassing configured proxy settings.  Note: this issue only affects OS X in     default configurations. On Linux systems, autofs must be installed for the vulnerability to occur and     Windows is not affected. (CVE-2017-16541)

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
275697	Mozilla Firefox ESR < 60.2	Nessus	MacOS X Local Security Checks	11/18/2025	11/18/2025	critical
245036	Linux Distros Unpatched Vulnerability : CVE-2018-18499	Nessus	Misc.	8/7/2025	8/7/2025	medium
117470	RHEL 6 : firefox (RHSA-2018:2693)	Nessus	Red Hat Local Security Checks	9/13/2018	11/5/2024	critical
275686	Mozilla Firefox < 62.0	Nessus	Windows	11/18/2025	11/18/2025	critical
117292	Mozilla Firefox ESR < 60.2 Multiple Vulnerabilities (macOS)	Nessus	MacOS X Local Security Checks	9/6/2018	8/12/2024	critical
117939	Mozilla Thunderbird < 60.2.1	Nessus	Windows	10/5/2018	11/18/2025	critical
118744	RHEL 7 : thunderbird (RHSA-2018:3458)	Nessus	Red Hat Local Security Checks	11/6/2018	4/27/2024	critical
118552	RHEL 6 : thunderbird (RHSA-2018:3403)	Nessus	Red Hat Local Security Checks	10/31/2018	4/27/2024	critical
119748	Mozilla Firefox < 62 Multiple Vulnerabilities (macOS)	Nessus	MacOS X Local Security Checks	12/18/2018	7/15/2024	critical
117293	Mozilla Firefox ESR < 60.2	Nessus	Windows	9/6/2018	11/18/2025	critical
117469	RHEL 7 : firefox (RHSA-2018:2692)	Nessus	Red Hat Local Security Checks	9/13/2018	11/5/2024	critical
275640	Mozilla Firefox < 62.0	Nessus	MacOS X Local Security Checks	11/18/2025	11/18/2025	critical
121478	Mozilla Thunderbird < 60.2.1	Nessus	MacOS X Local Security Checks	1/30/2019	11/18/2025	critical

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