The version of Firefox ESR installed on the remote Windows host is prior to 78.4.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2020-49 advisory.

  - In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in     an exploitable use-after-free condition. (CVE-2020-26950)

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

A use-after-free was found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code.

The remote Redhat Enterprise Linux 6 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:5104 advisory.

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

    This update upgrades Firefox to version 78.4.1 ESR.

    Security Fix(es):

    * Mozilla: Write side effects in MCallGetProperty opcode not accounted for (CVE-2020-26950)

    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 this issue 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 a vulnerability as referenced in the RHSA-2020:5138 advisory.

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

    This update upgrades Firefox to version 78.4.1 ESR.

    Security Fix(es):

    * Mozilla: Write side effects in MCallGetProperty opcode not accounted for (CVE-2020-26950)

    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 this issue 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 a vulnerability as referenced in the RHSA-2020:5135 advisory.

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

    This update upgrades Firefox to version 78.4.1 ESR.

    Security Fix(es):

    * Mozilla: Write side effects in MCallGetProperty opcode not accounted for (CVE-2020-26950)

    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 this issue but has instead relied only on the application's self-reported version number.

The remote Scientific Linux 6 host has packages installed that are affected by a vulnerability as referenced in the SLSA-2020:5104-1 advisory.

  - Mozilla: Write side effects in MCallGetProperty opcode not accounted for (CVE-2020-26950)

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 Firefox ESR installed on the remote macOS or Mac OS X host is prior to 78.4.1. It is, therefore, affected by a vulnerability as referenced in the mfsa2020-49 advisory.

  - In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in     an exploitable use-after-free condition. (CVE-2020-26950)

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

A use-after-free was found in Thunderbird, which could potentially result in the execution of arbitrary code.

For Debian 9 stretch, this problem has been fixed in version 1:78.4.2-1~deb9u1.

We recommend that you upgrade your thunderbird packages.

For the detailed security status of thunderbird please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/thunderbird

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

A use-after-free was found in Thunderbird, which could potentially result in the execution of arbitrary code.

This update for MozillaFirefox fixes the following issues :

  - Firefox Extended Support Release 78.4.1 ESR

  - Fixed: Security fix MFSA 2020-49 (bsc#1178588)

  - CVE-2020-26950 (bmo#1675905) Write side effects in     MCallGetProperty opcode not accounted for

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

The remote Oracle Linux 6 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2020-5164 advisory.

    [78.4.3-1.0.1]
    - Replaced thunderbird-redhat-default-prefs.js with thunderbird-oracle-default-prefs.js

    [78.4.3-1]
    - Update to 78.4.3

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue 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 78.4.1 ESR

  - Fixed: Security fix MFSA 2020-49 (bsc#1178588)

  - CVE-2020-26950 (bmo#1675905) Write side effects in     MCallGetProperty opcode not accounted for

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 remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has firefox packages installed that are affected by multiple vulnerabilities:

  - In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in     an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR <     78.4.1, and Thunderbird < 78.4.2. (CVE-2020-26950)

  - Using object or embed tags, it was possible to frame other websites, even if they disallowed framing using     the X-Frame-Options header. This vulnerability affects Thunderbird < 78 and Firefox < 78.0.2.
    (CVE-2020-15648)

  - In non-standard configurations, a JPEG image created by JavaScript could have caused an internal variable     to overflow, resulting in an out of bounds write, memory corruption, and a potentially exploitable crash.
    This vulnerability affects Firefox < 78. (CVE-2020-12422)

  - When constructing a permission prompt for WebRTC, a URI was supplied from the content process. This URI     was untrusted, and could have been the URI of an origin that was previously granted permission; bypassing     the prompt. This vulnerability affects Firefox < 78. (CVE-2020-12424)

  - Due to confusion processing a hyphen character in Date.parse(), a one-byte out of bounds read could have     occurred, leading to potential information disclosure. This vulnerability affects Firefox < 78.
    (CVE-2020-12425)

  - An iframe sandbox element with the allow-popups flag could be bypassed when using noopener links. This     could have led to security issues for websites relying on sandbox configurations that allowed popups and     hosted arbitrary content. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird <     78.1. (CVE-2020-15653)

  - JIT optimizations involving the Javascript arguments object could confuse later optimizations. This risk     was already mitigated by various precautions in the code, resulting in this bug rated at only moderate     severity. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
    (CVE-2020-15656)

  - The code for downloading files did not properly take care of special characters, which led to an attacker     being able to cut off the file ending at an earlier position, leading to a different file type being     downloaded than shown in the dialog. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and     Thunderbird < 78.1. (CVE-2020-15658)

  - When in an endless loop, a website specifying a custom cursor using CSS could make it look like the user     is interacting with the user interface, when they are not. This could lead to a perceived broken state,     especially when interactions with existing browser dialogs and warnings do not work. This vulnerability     affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1. (CVE-2020-15654)

  - By exploiting an Open Redirect vulnerability on a website, an attacker could have spoofed the site     displayed in the download file dialog to show the original site (the one suffering from the open redirect)     rather than the site the file was actually downloaded from. This vulnerability affects Firefox < 81,     Thunderbird < 78.3, and Firefox ESR < 78.3. (CVE-2020-15677)

  - Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove,     resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable     element. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
    (CVE-2020-15676)

  - When recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in     a potential use-after-free. This occurs because the function     APZCTreeManager::ComputeClippedCompositionBounds did not follow iterator invalidation rules. This     vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3. (CVE-2020-15678)

  - Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. 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, Thunderbird < 78.3, and     Firefox ESR < 78.3. (CVE-2020-15673)

  - Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR     78.3. 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 < 78.4,     Firefox < 82, and Thunderbird < 78.4. (CVE-2020-15683)

  - Use after free in WebRTC in Google Chrome prior to 86.0.4240.75 allowed a remote attacker to potentially     exploit heap corruption via a crafted HTML page. (CVE-2020-15969)

  - 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)

  - 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)

  - 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)

  - 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)

  - 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)

  - 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)

  - 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)

  - Certain blit values provided by the user were not properly constrained leading to a heap buffer overflow     on some video drivers. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR <     78.6. (CVE-2020-26971)

  - Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This     could have been used as a sanitizer bypass. This vulnerability affects Firefox < 84, Thunderbird < 78.6,     and Firefox ESR < 78.6. (CVE-2020-26973)

  - When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly     cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially     exploitable crash. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
    (CVE-2020-26974)

  - Using techniques that built on the slipstream research, a malicious webpage could have exposed both an     internal network's hosts as well as services running on the user's local machine. This vulnerability     affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6. (CVE-2020-26978)

  - Uninitialized Use in V8 in Google Chrome prior to 87.0.4280.88 allowed a remote attacker to obtain     potentially sensitive information from process memory via a crafted HTML page. (CVE-2020-16042)

  - When an extension with the proxy permission registered to receive , the proxy.onRequest callback     was not triggered for view-source URLs. While web content cannot navigate to such URLs, a user opening     View Source could have inadvertently leaked their IP address. This vulnerability affects Firefox < 84,     Thunderbird < 78.6, and Firefox ESR < 78.6. (CVE-2020-35111)

  - Mozilla developers reported memory safety bugs present in Firefox 83 and Firefox ESR 78.5. 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 < 84, Thunderbird < 78.6, and     Firefox ESR < 78.6. (CVE-2020-35113)

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

The remote CentOS Linux 6 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:5104 advisory.

  - In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in     an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR <     78.4.1, and Thunderbird < 78.4.2. (CVE-2020-26950)

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

The remote MiracleLinux 7 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2020-940:25 advisory.

    * Mozilla: Write side effects in MCallGetProperty opcode not accounted for (CVE-2020-26950)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
142611	Mozilla Firefox ESR < 78.4.1	Nessus	Windows	2020/11/9	2025/11/18	high
142858	Debian DSA-4788-1 : firefox-esr - security update	Nessus	Debian Local Security Checks	2020/11/12	2022/3/2	high
142864	RHEL 6 : firefox (RHSA-2020:5104)	Nessus	Red Hat Local Security Checks	2020/11/12	2024/11/7	high
142992	RHEL 8 : firefox (RHSA-2020:5138)	Nessus	Red Hat Local Security Checks	2020/11/18	2024/11/7	high
142994	RHEL 8 : firefox (RHSA-2020:5135)	Nessus	Red Hat Local Security Checks	2020/11/18	2024/11/7	high
143044	Scientific Linux Security Update : firefox on SL6.x i686/x86_64 (2020:5104)	Nessus	Scientific Linux Local Security Checks	2020/11/18	2022/3/1	high
142612	Mozilla Firefox ESR < 78.4.1	Nessus	MacOS X Local Security Checks	2020/11/9	2025/11/18	high
142918	Debian DLA-2449-1 : thunderbird security update	Nessus	Debian Local Security Checks	2020/11/17	2022/3/2	high
142951	Debian DSA-4790-1 : thunderbird - security update	Nessus	Debian Local Security Checks	2020/11/17	2022/3/2	high
142956	openSUSE Security Update : MozillaFirefox (openSUSE-2020-1909)	Nessus	SuSE Local Security Checks	2020/11/17	2022/3/3	high
143201	Oracle Linux 6 : thunderbird (ELSA-2020-5164)	Nessus	Oracle Linux Local Security Checks	2020/11/24	2024/10/22	high
143799	SUSE SLES12 Security Update : MozillaFirefox (SUSE-SU-2020:3331-1)	Nessus	SuSE Local Security Checks	2020/12/9	2022/3/1	high
147399	NewStart CGSL CORE 5.04 / MAIN 5.04 : firefox Multiple Vulnerabilities (NS-SA-2021-0018)	Nessus	NewStart CGSL Local Security Checks	2021/3/10	2022/5/10	critical
208489	CentOS 6 : firefox (RHSA-2020:5104)	Nessus	CentOS Local Security Checks	2024/10/9	2024/10/10	high
291666	MiracleLinux 7 : firefox-78.4.1-1.0.1.el7.AXS7 (AXSA:2020-940:25)	Nessus	Miracle Linux Local Security Checks	2026/1/19	2026/2/5	high

检测

插件搜索

high

high

high

high

high

high

high

high

high

high

high

high

critical

high

high