This update for MozillaFirefox fixes the following issues :

Firefox Extended Support Release 68.4.1 ESR

  - Fixed: Security fix MFSA 2020-03 (bsc#1160498)

  - CVE-2019-17026 (bmo#1607443) IonMonkey type confusion     with StoreElementHole and FallibleStoreElement

Firefox Extended Support Release 68.4.0 ESR

  - Fixed: Various security fixes MFSA 2020-02 (bsc#1160305)

  - CVE-2019-17015 (bmo#1599005) Memory corruption in parent     process during new content process initialization on     Windows

  - CVE-2019-17016 (bmo#1599181) Bypass of @namespace CSS     sanitization during pasting

  - CVE-2019-17017 (bmo#1603055) Type Confusion in     XPCVariant.cpp

  - CVE-2019-17021 (bmo#1599008) Heap address disclosure in     parent process during content process initialization on     Windows

  - CVE-2019-17022 (bmo#1602843) CSS sanitization does not     escape HTML tags

  - CVE-2019-17024 (bmo#1507180, bmo#1595470, bmo#1598605,     bmo#1601826) Memory safety bugs fixed in Firefox 72 and     Firefox ESR 68.4

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

The version of Firefox installed on the remote Windows host is prior to 72.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-01 advisory.

  - Mozilla developers Karl Tomlinson, Jason Kratzer, Tyson Smith, Jon Coppeard, and Christian Holler reported     memory safety bugs present in Firefox 71. 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-2019-17025)

  - During the initialization of a new content process, a pointer offset can be manipulated leading to memory     corruption and a potentially exploitable crash in the parent process.  Note: this issue only occurs on     Windows. Other operating systems are unaffected. (CVE-2019-17015)

  - When pasting a <code><style></code> tag from the clipboard into a rich text editor, the CSS     sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of     websites resulting in data exfiltration. (CVE-2019-17016)

  - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a     crash. We presume that with enough effort that it could be exploited to run arbitrary code.
    (CVE-2019-17017)

  - When in Private Browsing Mode on Windows 10, the Windows keyboard may retain word suggestions to improve     the accuracy of the keyboard. (CVE-2019-17018)

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.

  - During the initialization of a new content process, a race condition occurs that can allow a content     process to disclose heap addresses from the parent process. *Note: this issue only occurs on Windows.
    Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
    (CVE-2019-17021)

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

New mozilla-thunderbird packages are available for Slackware 14.2 and
-current to fix security issues.

This update for MozillaThunderbird to version 68.4.1 fixes the following issues :

Security issues fixed :

  - CVE-2019-17026: IonMonkey type confusion with     StoreElementHole and FallibleStoreElement

  - CVE-2019-17016: Bypass of @namespace CSS sanitization     during pasting

  - CVE-2019-17017: Type Confusion in XPCVariant.cpp

  - CVE-2019-17022: CSS sanitization does not escape HTML     tags

  - CVE-2019-17024: multiple Memory safety bugs fixed

Non-security issues fixed :

  - Various improvements when setting up an account for a     Microsoft Exchange server. For example better detection     for Office 365 accounts.

This update was imported from the SUSE:SLE-15:Update update project.

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 68.4.1. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-04 advisory.

  - Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type     confusion. We are aware of targeted attacks in the wild abusing this flaw. (CVE-2019-17026)

  - During the initialization of a new content process, a pointer offset can be manipulated leading to memory     corruption and a potentially exploitable crash in the parent process.  Note: this issue only occurs on     Windows. Other operating systems are unaffected. (CVE-2019-17015)

  - When pasting a <code><style></code> tag from the clipboard into a rich text editor, the CSS     sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of     websites resulting in data exfiltration. (CVE-2019-17016)

  - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a     crash. We presume that with enough effort that it could be exploited to run arbitrary code.
    (CVE-2019-17017)

  - During the initialization of a new content process, a race condition occurs that can allow a content     process to disclose heap addresses from the parent process.  Note: this issue only occurs on Windows.
    Other operating systems are unaffected. (CVE-2019-17021)

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

This update for MozillaFirefox fixes the following issues :

  - Firefox Extended Support Release 68.4.1 ESR

  - Fixed: Security fix MFSA 2020-03 (bsc#1160498)

  - CVE-2019-17026 (bmo#1607443) IonMonkey type confusion     with StoreElementHole and FallibleStoreElement 

  - Firefox Extended Support Release 68.4.0 ESR

  - Fixed: Various security fixes MFSA 2020-02 (bsc#1160305)

  - CVE-2019-17015 (bmo#1599005) Memory corruption in parent     process during new content process initialization on     Windows

  - CVE-2019-17016 (bmo#1599181) Bypass of @namespace CSS     sanitization during pasting

  - CVE-2019-17017 (bmo#1603055) Type Confusion in     XPCVariant.cpp

  - CVE-2019-17021 (bmo#1599008) Heap address disclosure in     parent process during content process initialization on     Windows

  - CVE-2019-17022 (bmo#1602843) CSS sanitization does not     escape HTML tags

  - CVE-2019-17024 (bmo#1507180, bmo#1595470, bmo#1598605,     bmo#1601826) Memory safety bugs fixed in Firefox 72 and     Firefox ESR 68.4

This update was imported from the SUSE:SLE-15:Update update project.

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 72.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-01 advisory.

  - Mozilla developers Karl Tomlinson, Jason Kratzer, Tyson Smith, Jon Coppeard, and Christian Holler reported     memory safety bugs present in Firefox 71. 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-2019-17025)

  - During the initialization of a new content process, a pointer offset can be manipulated leading to memory     corruption and a potentially exploitable crash in the parent process.  Note: this issue only occurs on     Windows. Other operating systems are unaffected. (CVE-2019-17015)

  - When pasting a <code><style></code> tag from the clipboard into a rich text editor, the CSS     sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of     websites resulting in data exfiltration. (CVE-2019-17016)

  - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a     crash. We presume that with enough effort that it could be exploited to run arbitrary code.
    (CVE-2019-17017)

  - When in Private Browsing Mode on Windows 10, the Windows keyboard may retain word suggestions to improve     the accuracy of the keyboard. (CVE-2019-17018)

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 68.4. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-02 advisory.

  - Mozilla developers Jason Kratzer, Christian Holler, and Bob Clary reported memory safety bugs present in     Firefox 71 and Firefox ESR 68.3. Some of these bugs showed evidence of memory corruption and we presume     that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2019-17024)

  - During the initialization of a new content process, a pointer offset can be manipulated leading to memory     corruption and a potentially exploitable crash in the parent process.  Note: this issue only occurs on     Windows. Other operating systems are unaffected. (CVE-2019-17015)

  - When pasting a <code><style></code> tag from the clipboard into a rich text editor, the CSS     sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of     websites resulting in data exfiltration. (CVE-2019-17016)

  - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a     crash. We presume that with enough effort that it could be exploited to run arbitrary code.
    (CVE-2019-17017)

  - During the initialization of a new content process, a race condition occurs that can allow a content     process to disclose heap addresses from the parent process.  Note: this issue only occurs on Windows.
    Other operating systems are unaffected. (CVE-2019-17021)

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 68.4. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-02 advisory.

  - Mozilla developers Jason Kratzer, Christian Holler, and Bob Clary reported memory safety bugs present in     Firefox 71 and Firefox ESR 68.3. Some of these bugs showed evidence of memory corruption and we presume     that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2019-17024)

  - During the initialization of a new content process, a pointer offset can be manipulated leading to memory     corruption and a potentially exploitable crash in the parent process.  Note: this issue only occurs on     Windows. Other operating systems are unaffected. (CVE-2019-17015)

  - When pasting a <code><style></code> tag from the clipboard into a rich text editor, the CSS     sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of     websites resulting in data exfiltration. (CVE-2019-17016)

  - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a     crash. We presume that with enough effort that it could be exploited to run arbitrary code.
    (CVE-2019-17017)

  - During the initialization of a new content process, a race condition occurs that can allow a content     process to disclose heap addresses from the parent process.  Note: this issue only occurs on Windows.
    Other operating systems are unaffected. (CVE-2019-17021)

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

The remote SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2020:14268-1 advisory.

  - During the initialization of a new content process, a pointer offset can be manipulated leading to memory     corruption and a potentially exploitable crash in the parent process. *Note: this issue only occurs on     Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 68.4 and     Firefox < 72. (CVE-2019-17015)

  - When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly     rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in     data exfiltration. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72. (CVE-2019-17016)

  - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a     crash. We presume that with enough effort that it could be exploited to run arbitrary code. This     vulnerability affects Firefox ESR < 68.4 and Firefox < 72. (CVE-2019-17017)

  - During the initialization of a new content process, a race condition occurs that can allow a content     process to disclose heap addresses from the parent process. *Note: this issue only occurs on Windows.
    Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
    (CVE-2019-17021)

  - When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer does not     escape < and > characters. Because the resulting string is pasted directly into the text node of the     element this does not result in a direct injection into the webpage; however, if a webpage subsequently     copies the node's innerHTML, assigning it to another innerHTML, this would result in an XSS vulnerability.
    Two WYSIWYG editors were identified with this behavior, more may exist. This vulnerability affects Firefox     ESR < 68.4 and Firefox < 72. (CVE-2019-17022)

  - Mozilla developers reported memory safety bugs present in Firefox 71 and Firefox ESR 68.3. Some of these     bugs showed evidence of memory corruption and we presume that with enough effort some of these could have     been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
    (CVE-2019-17024)

  - Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type     confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects     Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1. (CVE-2019-17026)

Note that Nessus has not tested for this issue 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 68.4.1. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-04 advisory.

  - Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type     confusion. We are aware of targeted attacks in the wild abusing this flaw. (CVE-2019-17026)

  - During the initialization of a new content process, a pointer offset can be manipulated leading to memory     corruption and a potentially exploitable crash in the parent process.  Note: this issue only occurs on     Windows. Other operating systems are unaffected. (CVE-2019-17015)

  - When pasting a <code><style></code> tag from the clipboard into a rich text editor, the CSS     sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of     websites resulting in data exfiltration. (CVE-2019-17016)

  - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a     crash. We presume that with enough effort that it could be exploited to run arbitrary code.
    (CVE-2019-17017)

  - During the initialization of a new content process, a race condition occurs that can allow a content     process to disclose heap addresses from the parent process.  Note: this issue only occurs on Windows.
    Other operating systems are unaffected. (CVE-2019-17021)

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
132921	SUSE SLED15 / SLES15 Security Update : MozillaFirefox (SUSE-SU-2020:0078-1)	Nessus	SuSE Local Security Checks	1/15/2020	4/25/2023	high
132709	Mozilla Firefox < 72.0	Nessus	Windows	1/8/2020	11/18/2025	high
247993	Linux Distros Unpatched Vulnerability : CVE-2019-17021	Nessus	Misc.	8/11/2025	8/11/2025	medium
132847	Slackware 14.2 / current : mozilla-thunderbird (SSA:2020-010-01)	Nessus	Slackware Local Security Checks	1/13/2020	4/25/2023	high
132852	SUSE SLED12 / SLES12 Security Update : MozillaFirefox (SUSE-SU-2020:0068-1)	Nessus	SuSE Local Security Checks	1/13/2020	4/25/2023	high
133199	openSUSE Security Update : MozillaThunderbird (openSUSE-2020-94)	Nessus	SuSE Local Security Checks	1/23/2020	3/29/2024	high
132773	Mozilla Thunderbird < 68.4.1	Nessus	MacOS X Local Security Checks	1/10/2020	11/20/2025	high
132949	openSUSE Security Update : MozillaFirefox (openSUSE-2020-60)	Nessus	SuSE Local Security Checks	1/16/2020	3/29/2024	high
132708	Mozilla Firefox < 72.0	Nessus	MacOS X Local Security Checks	1/8/2020	11/18/2025	high
132710	Mozilla Firefox ESR < 68.4	Nessus	MacOS X Local Security Checks	1/8/2020	11/18/2025	high
132711	Mozilla Firefox ESR < 68.4	Nessus	Windows	1/8/2020	11/18/2025	high
150661	SUSE SLES11 Security Update : MozillaFirefox (SUSE-SU-2020:14268-1)	Nessus	SuSE Local Security Checks	6/10/2021	12/6/2022	high
132774	Mozilla Thunderbird < 68.4.1	Nessus	Windows	1/10/2020	11/18/2025	high

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