The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - firefox: Possible integer overflow to fix inside XML_Parse in Expat (CVE-2016-9063)

  - firefox: arbitrary code execution and a sandbox escape (CVE-2019-25136)

  - By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject     stylesheets and bypass Content Security Policy (CSP). This vulnerability affects Firefox < 63.
    (CVE-2018-12398)

  - When a new protocol handler is registered, the API accepts a title argument which can be used to mislead     users about which domain is registering the new protocol. This may result in the user approving a protocol     handler that they otherwise would not have. This vulnerability affects Firefox < 63. (CVE-2018-12399)

  - Some special resource URIs will cause a non-exploitable crash if loaded with optional parameters following     a '?' in the parsed string. This could lead to denial of service (DOS) attacks. This vulnerability affects     Firefox < 63. (CVE-2018-12401)

  - The internal WebBrowserPersist code does not use correct origin context for a resource being saved. This     manifests when sub-resources are loaded as part of Save Page As... functionality. For example, a     malicious page could recover a visitor's Windows username and NTLM hash by including resources otherwise     unreachable to the malicious page, if they can convince the visitor to save the complete web page.
    Similarly, SameSite cookies are sent on cross-origin requests when the Save Page As... menu item is     selected to save a page, which can result in saving the wrong version of resources based on those cookies.
    This vulnerability affects Firefox < 63. (CVE-2018-12402)

  - If a site is loaded over a HTTPS connection but loads a favicon resource over HTTP, the mixed content     warning is not displayed to users. This vulnerability affects Firefox < 63. (CVE-2018-12403)

  - WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the     permissions granted to extensions. This could allow an extension to interfere with the loading and usage     of these pages and use capabilities that were intended to be restricted from extensions. This     vulnerability affects Firefox < 64. (CVE-2018-18495)

  - Limitations on the URIs allowed to WebExtensions by the browser.windows.create API can be bypassed when a     pipe in the URL field is used within the extension to load multiple pages as a single argument. This could     allow a malicious WebExtension to open privileged about: or file: locations. This vulnerability affects     Firefox < 64. (CVE-2018-18497)

  - In some circumstances, JIT compiled code could have dereferenced a wild pointer value. This could have led     to an exploitable crash. This vulnerability affects Firefox < 122. (CVE-2024-0744)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The version of Mozilla Firefox installed on the remote Windows host is prior to 63. It is, therefore, affected by multiple vulnerabilities :

  - During HTTP Live Stream playback on Firefox for Android, audio     data can be accessed across origins in violation of security     policies. Because the problem is in the underlying Android     service, this issue is addressed by treating all HLS streams as     cross-origin and opaque to access. *Note: this issue only affects     Firefox for Android. Desktop versions of Firefox are unaffected.*     (CVE-2018-12391)

  - When manipulating user events in nested loops while opening a     document through script, it is possible to trigger a potentially     exploitable crash due to poor event handling. (CVE-2018-12392)

  - A potential vulnerability was found in 32-bit builds where an     integer overflow during the conversion of scripts to an internal     UTF-16 representation could result in allocating a buffer too     small for the conversion. This leads to a possible out-of-bounds     write. *Note: 64-bit builds are not vulnerable to this issue.*     (CVE-2018-12393)

  - By rewriting the Host request headers using the webRequest API, a     WebExtension can bypass domain restrictions through domain     fronting. This would allow access to domains that share a host     that are otherwise restricted. (CVE-2018-12395)

  - A vulnerability where a WebExtension can run content scripts in     disallowed contexts following navigation or other events. This     allows for potential privilege escalation by the WebExtension on     sites where content scripts should not be run. (CVE-2018-12396)

  - A WebExtension can request access to local files without the     warning prompt stating that the extension will 'Access your data     for all websites' being displayed to the user. This allows     extensions to run content scripts in local pages without     permission warnings when a local file is opened. (CVE-2018-12397)

  - By using the reflected URL in some special resource URIs, such as     chrome:, it is possible to inject stylesheets and bypass Content     Security Policy (CSP). (CVE-2018-12398)

  - When a new protocol handler is registered, the API accepts a title     argument which can be used to mislead users about which domain is     registering the new protocol. This may result in the user     approving a protocol handler that they otherwise would not have.
    (CVE-2018-12399)

  - In private browsing mode on Firefox for Android, favicons are     cached in the cache/icons folder as they are in non-private mode.
    This allows information leakage of sites visited during private     browsing sessions. *Note: this issue only affects Firefox for     Android. Desktop versions of Firefox are unaffected.*     (CVE-2018-12400)

  - Some special resource URIs will cause a non-exploitable crash if     loaded with optional parameters following a '?' in the parsed     string. This could lead to denial of service (DOS) attacks.
    (CVE-2018-12401)

  - SameSite cookies are sent on cross-origin requests when the 'Save     Page As...' menu item is selected to save a page, violating cookie     policy. This can result in saving the wrong version of resources     based on those cookies. (CVE-2018-12402)

  - If a site is loaded over a HTTPS connection but loads a favicon     resource over HTTP, the mixed content warning is not displayed to     users. (CVE-2018-12403)

  - Mozilla developers and community members Christian Holler, Dana     Keeler, Ronald Crane, Marcia Knous, Tyson Smith, Daniel Veditz,     and Steve Fink reported memory safety bugs present in Firefox 62.
    Some of these bugs showed evidence of memory corruption and we     presume that with enough effort that some of these could be     exploited to run arbitrary code. (CVE-2018-12388)

  - Mozilla developers and community members Christian Holler, Bob     Owen, Boris Zbarsky, Calixte Denizet, Jason Kratzer, Jed Davis,     Taegeon Lee, Philipp, Ronald Crane, Raul Gurzau, Gary Kwong, Tyson     Smith, Raymond Forbes, and Bogdan Tara reported memory safety bugs     present in Firefox 62 and Firefox ESR 60.2. Some of these bugs     showed evidence of memory corruption and we presume that with     enough effort that some of these could be exploited to run     arbitrary code. (CVE-2018-12390)

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

Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, bypass CSP restrictions, spoof the protocol registration notification bar, leak SameSite cookies, bypass mixed content warnings, or execute arbitrary code. (CVE-2018-12388, CVE-2018-12390, CVE-2018-12392, CVE-2018-12393, CVE-2018-12398, CVE-2018-12399, CVE-2018-12401, CVE-2018-12402, CVE-2018-12403)

Multiple security issues were discovered with WebExtensions in Firefox. If a user were tricked in to installing a specially crafted extension, an attacker could potentially exploit these to bypass domain restrictions, gain additional privileges, or run content scripts in local pages without permission. (CVE-2018-12395, CVE-2018-12396, CVE-2018-12397).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

USN-3801-1 fixed vulnerabilities in Firefox. The update introduced various minor regressions. This update fixes the problems.

We apologize for the inconvenience.

Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, bypass CSP restrictions, spoof the protocol registration notification bar, leak SameSite cookies, bypass mixed content warnings, or execute arbitrary code. (CVE-2018-12388, CVE-2018-12390, CVE-2018-12392, CVE-2018-12393, CVE-2018-12398, CVE-2018-12399, CVE-2018-12401, CVE-2018-12402, CVE-2018-12403)

Multiple security issues were discovered with WebExtensions in Firefox. If a user were tricked in to installing a specially crafted extension, an attacker could potentially exploit these to bypass domain restrictions, gain additional privileges, or run content scripts in local pages without permission. (CVE-2018-12395, CVE-2018-12396, CVE-2018-12397).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Mozilla Foundation reports :

CVE-2018-12391: HTTP Live Stream audio data is accessible cross-origin

CVE-2018-12392: Crash with nested event loops

CVE-2018-12393: Integer overflow during Unicode conversion while loading JavaScript

CVE-2018-12395: WebExtension bypass of domain restrictions through header rewriting

CVE-2018-12396: WebExtension content scripts can execute in disallowed contexts

CVE-2018-12397 :

CVE-2018-12398: CSP bypass through stylesheet injection in resource URIs

CVE-2018-12399: Spoofing of protocol registration notification bar

CVE-2018-12400: Favicons are cached in private browsing mode on Firefox for Android

CVE-2018-12401: DOS attack through special resource URI parsing

CVE-2018-12402: SameSite cookies leak when pages are explicitly saved

CVE-2018-12403: Mixed content warning is not displayed when HTTPS page loads a favicon over HTTP

CVE-2018-12388: Memory safety bugs fixed in Firefox 63

CVE-2018-12390: Memory safety bugs fixed in Firefox 63 and Firefox ESR 60.3

The version of Mozilla Firefox installed on the remote macOS host is prior to 63. It is, therefore, affected by multiple vulnerabilities :

  - During HTTP Live Stream playback on Firefox for Android, audio     data can be accessed across origins in violation of security     policies. Because the problem is in the underlying Android     service, this issue is addressed by treating all HLS streams as     cross-origin and opaque to access. *Note: this issue only affects     Firefox for Android. Desktop versions of Firefox are unaffected.*     (CVE-2018-12391)

  - When manipulating user events in nested loops while opening a     document through script, it is possible to trigger a potentially     exploitable crash due to poor event handling. (CVE-2018-12392)

  - A potential vulnerability was found in 32-bit builds where an     integer overflow during the conversion of scripts to an internal     UTF-16 representation could result in allocating a buffer too     small for the conversion. This leads to a possible out-of-bounds     write. *Note: 64-bit builds are not vulnerable to this issue.*     (CVE-2018-12393)

  - By rewriting the Host request headers using the webRequest API, a     WebExtension can bypass domain restrictions through domain     fronting. This would allow access to domains that share a host     that are otherwise restricted. (CVE-2018-12395)

  - A vulnerability where a WebExtension can run content scripts in     disallowed contexts following navigation or other events. This     allows for potential privilege escalation by the WebExtension on     sites where content scripts should not be run. (CVE-2018-12396)

  - A WebExtension can request access to local files without the     warning prompt stating that the extension will 'Access your data     for all websites' being displayed to the user. This allows     extensions to run content scripts in local pages without     permission warnings when a local file is opened. (CVE-2018-12397)

  - By using the reflected URL in some special resource URIs, such as     chrome:, it is possible to inject stylesheets and bypass Content     Security Policy (CSP). (CVE-2018-12398)

  - When a new protocol handler is registered, the API accepts a title     argument which can be used to mislead users about which domain is     registering the new protocol. This may result in the user     approving a protocol handler that they otherwise would not have.
    (CVE-2018-12399)

  - In private browsing mode on Firefox for Android, favicons are     cached in the cache/icons folder as they are in non-private mode.
    This allows information leakage of sites visited during private     browsing sessions. *Note: this issue only affects Firefox for     Android. Desktop versions of Firefox are unaffected.*     (CVE-2018-12400)

  - Some special resource URIs will cause a non-exploitable crash if     loaded with optional parameters following a '?' in the parsed     string. This could lead to denial of service (DOS) attacks.
    (CVE-2018-12401)

  - SameSite cookies are sent on cross-origin requests when the 'Save     Page As...' menu item is selected to save a page, violating cookie     policy. This can result in saving the wrong version of resources     based on those cookies. (CVE-2018-12402)

  - If a site is loaded over a HTTPS connection but loads a favicon     resource over HTTP, the mixed content warning is not displayed to     users. (CVE-2018-12403)

  - Mozilla developers and community members Christian Holler, Dana     Keeler, Ronald Crane, Marcia Knous, Tyson Smith, Daniel Veditz,     and Steve Fink reported memory safety bugs present in Firefox 62.
    Some of these bugs showed evidence of memory corruption and we     presume that with enough effort that some of these could be     exploited to run arbitrary code. (CVE-2018-12388)

  - Mozilla developers and community members Christian Holler, Bob     Owen, Boris Zbarsky, Calixte Denizet, Jason Kratzer, Jed Davis,     Taegeon Lee, Philipp, Ronald Crane, Raul Gurzau, Gary Kwong, Tyson     Smith, Raymond Forbes, and Bogdan Tara reported memory safety bugs     present in Firefox 62 and Firefox ESR 60.2. Some of these bugs     showed evidence of memory corruption and we presume that with     enough effort that some of these could be exploited to run     arbitrary code. (CVE-2018-12390)

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

The remote Redhat Enterprise Linux 5 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - firefox: Use-after-free in compositor potentially allows code execution (CVE-2018-5148)

  - An integer overflow during the parsing of XML using the Expat library. This vulnerability affects Firefox     < 50. (CVE-2016-9063)

  - If a site is loaded over a HTTPS connection but loads a favicon resource over HTTP, the mixed content     warning is not displayed to users. This vulnerability affects Firefox < 63. (CVE-2018-12403)

  - Firefox did not reset the address bar after the beforeunload dialog was shown if the user chose to remain     on the page. This could have resulted in an incorrect URL being shown when used in conjunction with other     unexpected browser behaviors. This vulnerability affects Firefox < 80. (CVE-2020-15665)

  - 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)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 8 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - firefox: mixed content warning is not displayed when HTTPS page loads a favicon over HTTP (CVE-2018-12403)

  - firefox: WebExtensions can load arbitrary URLs through pipe separators (CVE-2018-18497)

  - By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject     stylesheets and bypass Content Security Policy (CSP). This vulnerability affects Firefox < 63.
    (CVE-2018-12398)

  - When a new protocol handler is registered, the API accepts a title argument which can be used to mislead     users about which domain is registering the new protocol. This may result in the user approving a protocol     handler that they otherwise would not have. This vulnerability affects Firefox < 63. (CVE-2018-12399)

  - Some special resource URIs will cause a non-exploitable crash if loaded with optional parameters following     a '?' in the parsed string. This could lead to denial of service (DOS) attacks. This vulnerability affects     Firefox < 63. (CVE-2018-12401)

  - The internal WebBrowserPersist code does not use correct origin context for a resource being saved. This     manifests when sub-resources are loaded as part of Save Page As... functionality. For example, a     malicious page could recover a visitor's Windows username and NTLM hash by including resources otherwise     unreachable to the malicious page, if they can convince the visitor to save the complete web page.
    Similarly, SameSite cookies are sent on cross-origin requests when the Save Page As... menu item is     selected to save a page, which can result in saving the wrong version of resources based on those cookies.
    This vulnerability affects Firefox < 63. (CVE-2018-12402)

  - WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the     permissions granted to extensions. This could allow an extension to interfere with the loading and usage     of these pages and use capabilities that were intended to be restricted from extensions. This     vulnerability affects Firefox < 64. (CVE-2018-18495)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - firefox: Possible integer overflow to fix inside XML_Parse in Expat (CVE-2016-9063)

  - firefox: arbitrary code execution and a sandbox escape (CVE-2019-25136)

  - By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject     stylesheets and bypass Content Security Policy (CSP). This vulnerability affects Firefox < 63.
    (CVE-2018-12398)

  - When a new protocol handler is registered, the API accepts a title argument which can be used to mislead     users about which domain is registering the new protocol. This may result in the user approving a protocol     handler that they otherwise would not have. This vulnerability affects Firefox < 63. (CVE-2018-12399)

  - Some special resource URIs will cause a non-exploitable crash if loaded with optional parameters following     a '?' in the parsed string. This could lead to denial of service (DOS) attacks. This vulnerability affects     Firefox < 63. (CVE-2018-12401)

  - The internal WebBrowserPersist code does not use correct origin context for a resource being saved. This     manifests when sub-resources are loaded as part of Save Page As... functionality. For example, a     malicious page could recover a visitor's Windows username and NTLM hash by including resources otherwise     unreachable to the malicious page, if they can convince the visitor to save the complete web page.
    Similarly, SameSite cookies are sent on cross-origin requests when the Save Page As... menu item is     selected to save a page, which can result in saving the wrong version of resources based on those cookies.
    This vulnerability affects Firefox < 63. (CVE-2018-12402)

  - If a site is loaded over a HTTPS connection but loads a favicon resource over HTTP, the mixed content     warning is not displayed to users. This vulnerability affects Firefox < 63. (CVE-2018-12403)

  - WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the     permissions granted to extensions. This could allow an extension to interfere with the loading and usage     of these pages and use capabilities that were intended to be restricted from extensions. This     vulnerability affects Firefox < 64. (CVE-2018-18495)

  - Limitations on the URIs allowed to WebExtensions by the browser.windows.create API can be bypassed when a     pipe in the URL field is used within the extension to load multiple pages as a single argument. This could     allow a malicious WebExtension to open privileged about: or file: locations. This vulnerability affects     Firefox < 64. (CVE-2018-18497)

  - In some circumstances, JIT compiled code could have dereferenced a wild pointer value. This could have led     to an exploitable crash. This vulnerability affects Firefox < 122. (CVE-2024-0744)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

Versions of Mozilla Firefox prior to 63 are unpatched for the following vulnerabilities as referenced in the mfsa2018-26 advisory:

 - A memory corruption bug exists that may lead to arbitrary code execution (CVE-2018-12388, CVE-2018-12390)
 - During HTTP Live Stream playback on Firefox for Android, audio data can be accessed across origins in violation of security policies. Because the problem is in the underlying Android service, this issue is addressed by treating all HLS streams as cross-origin and opaque to access. (CVE-2018-12391)
 - When manipulating user events in nested loops while opening a document through script, it is possible to trigger a potentially exploitable crash due to poor event handling. (CVE-2018-12392)
 - A potential vulnerability was found in 32-bit builds where an integer overflow during the conversion of scripts to an internal UTF-16 representation could result in allocating a buffer too small for the conversion. This leads to a possible out-of-bounds write. (CVE-2018-12393)
 - By rewriting the Host request headers using the webRequest API, a WebExtension can bypass domain restrictions through domain fronting. This would allow access to domains that share a host that are otherwise restricted. (CVE-2018-12395)
 - A vulnerability where a WebExtension can run content scripts in disallowed contexts following navigation or other events. This allows for potential privilege escalation by the WebExtension on sites where content scripts should not be run. (CVE-2018-12396)
 - A WebExtension can request access to local files without the warning prompt stating that the extension will 'Access your data for all websites' being displayed to the user. This allows extensions to run content scripts in local pages without permission warnings when a local file is opened. (CVE-2018-12397)
 - By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject stylesheets and bypass Content Security Policy (CSP). (CVE-2018-12398)
 - When a new protocol handler is registered, the API accepts a title argument which can be used to mislead users about which domain is registering the new protocol. This may result in the user approving a protocol handler that they otherwise would not have. (CVE-2018-12399)
 - In private browsing mode on Firefox for Android, favicons are cached in the cache/icons folder as they are in non-private mode. This allows information leakage of sites visited during private browsing sessions. (CVE-2018-12400)
 - Some special resource URIs will cause a non-exploitable crash if loaded with optional parameters following a '?' in the parsed string. This could lead to denial of service (DOS) attacks. (CVE-2018-12401)
 - SameSite cookies are sent on cross-origin requests when the 'Save Page As...' menu item is selected to save a page, violating cookie policy. This can result in saving the wrong version of resources based on those cookies. (CVE-2018-12402)
 - If a site is loaded over a HTTPS connection but loads a favicon resource over HTTP, the mixed content warning is not displayed to users. (CVE-2018-12403)

ID	Name	Product	Family	Published	Updated	Severity
195569	RHEL 6 : firefox (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	5/11/2024	5/11/2024	critical
118397	Mozilla Firefox < 63 Multiple Vulnerabilities	Nessus	Windows	10/25/2018	11/1/2019	high
118393	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Firefox vulnerabilities (USN-3801-1)	Nessus	Ubuntu Local Security Checks	10/25/2018	10/20/2023	critical
119146	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Firefox regressions (USN-3801-2)	Nessus	Ubuntu Local Security Checks	11/26/2018	10/20/2023	critical
118336	FreeBSD : mozilla -- multiple vulnerabilities (7c3a02b9-3273-4426-a0ba-f90fad2ff72e)	Nessus	FreeBSD Local Security Checks	10/24/2018	2/4/2022	high
118396	Mozilla Firefox < 63 Multiple Vulnerabilities (macOS)	Nessus	MacOS X Local Security Checks	10/25/2018	11/1/2019	high
195600	RHEL 5 : firefox (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	5/11/2024	5/11/2024	critical
195490	RHEL 8 : firefox (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	5/11/2024	5/11/2024	medium
195501	RHEL 7 : firefox (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	5/11/2024	5/11/2024	critical
700410	Mozilla Firefox < 63 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	2/6/2019	3/6/2019	high

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