The remote Redhat Enterprise Linux 6 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:5257 advisory.

  - Mozilla: Variable time processing of cross-origin images during drawImage calls (CVE-2020-16012)

  - Mozilla: Parsing mismatches could confuse and bypass security sanitizer for chrome privileged code     (CVE-2020-26951)

  - Mozilla: Fullscreen could be enabled without displaying the security UI (CVE-2020-26953)

  - Mozilla: XSS through paste (manual and clipboard API) (CVE-2020-26956)

  - Mozilla: Requests intercepted through ServiceWorkers lacked MIME type restrictions (CVE-2020-26958)

  - Mozilla: Use-after-free in WebRequestService (CVE-2020-26959)

  - Mozilla: Potential use-after-free in uses of nsTArray (CVE-2020-26960)

  - Mozilla: DoH did not filter IPv4 mapped IP Addresses (CVE-2020-26961)

  - Mozilla: Software keyboards may have remembered typed passwords (CVE-2020-26965)

  - Mozilla: Memory safety bugs fixed in Firefox 83 and Firefox ESR 78.5 (CVE-2020-26968)

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-2020-5235 advisory.

  - When drawing a transparent image on top of an unknown cross-origin image, the Skia library     drawImage function took a variable amount of time depending on the content of the underlying     image. This resulted in potential cross-origin information exposure of image content through timing side-     channel attacks.  (CVE-2020-16012)

  - A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even     after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal     pages could have used this attack to bypass our built-in sanitizer.  (CVE-2020-26951)

  - Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and     cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a     Content Security Policy bypass.  (CVE-2020-26958)

  - Mozilla: DoH did not filter IPv4 mapped IP Addresses (CVE-2020-26961)

  - Mozilla developers Randell Jesup, Christian Holler, Jason Kratzer, Byron Campen, and Steve Fink reported     memory safety bugs present in Firefox 82 and Firefox ESR 78.4. 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-2020-26968)

  - Mozilla: Fullscreen could be enabled without displaying the security UI (CVE-2020-26953)

  - In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and     therefore lead to XSS.  (CVE-2020-26956)

  - During browser shutdown, reference decrementing could have occured on a previously freed object, resulting     in a use-after-free, memory corruption, and a potentially exploitable crash.  (CVE-2020-26959)

  - Mozilla: Potential use-after-free in uses of nsTArray (CVE-2020-26960)

  - Mozilla: Software keyboards may have remembered typed passwords (CVE-2020-26965)

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

The remote Oracle Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2020-5237 advisory.

  - When drawing a transparent image on top of an unknown cross-origin image, the Skia library     drawImage function took a variable amount of time depending on the content of the underlying     image. This resulted in potential cross-origin information exposure of image content through timing side-     channel attacks.  (CVE-2020-16012)

  - A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even     after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal     pages could have used this attack to bypass our built-in sanitizer.  (CVE-2020-26951)

  - Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and     cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a     Content Security Policy bypass.  (CVE-2020-26958)

  - Mozilla: DoH did not filter IPv4 mapped IP Addresses (CVE-2020-26961)

  - Mozilla developers Randell Jesup, Christian Holler, Jason Kratzer, Byron Campen, and Steve Fink reported     memory safety bugs present in Firefox 82 and Firefox ESR 78.4. 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-2020-26968)

  - Mozilla: Fullscreen could be enabled without displaying the security UI (CVE-2020-26953)

  - In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and     therefore lead to XSS.  (CVE-2020-26956)

  - During browser shutdown, reference decrementing could have occured on a previously freed object, resulting     in a use-after-free, memory corruption, and a potentially exploitable crash.  (CVE-2020-26959)

  - Mozilla: Potential use-after-free in uses of nsTArray (CVE-2020-26960)

  - Mozilla: Software keyboards may have remembered typed passwords (CVE-2020-26965)

Note that Nessus has not tested for this issue 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-2020-5239 advisory.

  - When drawing a transparent image on top of an unknown cross-origin image, the Skia library     drawImage function took a variable amount of time depending on the content of the underlying     image. This resulted in potential cross-origin information exposure of image content through timing side-     channel attacks.  (CVE-2020-16012)

  - A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even     after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal     pages could have used this attack to bypass our built-in sanitizer.  (CVE-2020-26951)

  - Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and     cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a     Content Security Policy bypass.  (CVE-2020-26958)

  - Mozilla: DoH did not filter IPv4 mapped IP Addresses (CVE-2020-26961)

  - Mozilla developers Randell Jesup, Christian Holler, Jason Kratzer, Byron Campen, and Steve Fink reported     memory safety bugs present in Firefox 82 and Firefox ESR 78.4. 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-2020-26968)

  - Mozilla: Fullscreen could be enabled without displaying the security UI (CVE-2020-26953)

  - In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and     therefore lead to XSS.  (CVE-2020-26956)

  - During browser shutdown, reference decrementing could have occured on a previously freed object, resulting     in a use-after-free, memory corruption, and a potentially exploitable crash.  (CVE-2020-26959)

  - Mozilla: Potential use-after-free in uses of nsTArray (CVE-2020-26960)

  - Mozilla: Software keyboards may have remembered typed passwords (CVE-2020-26965)

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

The remote host is affected by the vulnerability described in GLSA-202012-03 (Mozilla Firefox: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Mozilla Firefox. Please       review the CVE identifiers referenced below for details.
  Impact :

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

The remote Oracle Linux 6 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2020-5257 advisory.

  - Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote     attacker to leak cross-origin data via a crafted HTML page. (CVE-2020-16012)

  - A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even     after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal     pages could have used this attack to bypass our built-in sanitizer. This vulnerability affects Firefox <     83, Firefox ESR < 78.5, and Thunderbird < 78.5. (CVE-2020-26951)

  - Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and     cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a     Content Security Policy bypass. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and     Thunderbird < 78.5. (CVE-2020-26958)

  - When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses     as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through     IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding attack. This     vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. (CVE-2020-26961)

  - Mozilla developers reported memory safety bugs present in Firefox 82 and Firefox ESR 78.4. 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 < 83, Firefox ESR < 78.5, and     Thunderbird < 78.5. (CVE-2020-26968)

  - It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus     making it possible to attempt a phishing attack or otherwise confuse the user. This vulnerability affects     Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. (CVE-2020-26953)

  - In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and     therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird <     78.5. (CVE-2020-26956)

  - During browser shutdown, reference decrementing could have occured on a previously freed object, resulting     in a use-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects     Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. (CVE-2020-26959)

  - If the Compact() method was called on an nsTArray, the array could have been reallocated without updating     other pointers, leading to a potential use-after-free and exploitable crash. This vulnerability affects     Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5. (CVE-2020-26960)

  - Some websites have a feature Show Password where clicking a button will change a password field into a     textbook field, revealing the typed password. If, when using a software keyboard that remembers user     input, a user typed their password and used that feature, the type of the password field was changed,     resulting in a keyboard layout change and the possibility for the software keyboard to remember the typed     password. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
    (CVE-2020-26965)

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

ID	Name	Product	Family	Published	Updated	Severity
143366	RHEL 6 : firefox (RHSA-2020:5257)	Nessus	Red Hat Local Security Checks	11/30/2020	4/28/2024	high
143368	Oracle Linux 7 : thunderbird (ELSA-2020-5235)	Nessus	Oracle Linux Local Security Checks	11/30/2020	2/7/2024	high
143377	Oracle Linux 8 : firefox (ELSA-2020-5237)	Nessus	Oracle Linux Local Security Checks	12/1/2020	2/7/2024	high
143378	Oracle Linux 7 : firefox (ELSA-2020-5239)	Nessus	Oracle Linux Local Security Checks	12/1/2020	2/7/2024	high
143494	GLSA-202012-03 : Mozilla Firefox: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	12/7/2020	2/7/2024	high
146200	Oracle Linux 6 : firefox (ELSA-2020-5257)	Nessus	Oracle Linux Local Security Checks	2/4/2021	1/23/2024	high

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