Memory safety bugs present in Firefox 120. 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 < 121.

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

  - Memory safety bugs present in Firefox 120. 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 < 121. (CVE-2023-6873)

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

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3698 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3698-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/               Emilio Pozuelo Monfort     December 29, 2023                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : thunderbird     Version        : 1:115.6.0-1~deb10u1     CVE ID         : CVE-2023-6856 CVE-2023-6857 CVE-2023-6858 CVE-2023-6859                      CVE-2023-6860 CVE-2023-6861 CVE-2023-6862 CVE-2023-6864                      CVE-2023-6873 CVE-2023-50761 CVE-2023-50762

    Multiple security issues were discovered in Thunderbird, which could     result in denial of service, the execution of arbitrary code or spoofing     of signed PGP/MIME and SMIME emails.

    For Debian 10 buster, these problems have been fixed in version     1:115.6.0-1~deb10u1.

    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

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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 remote host is affected by the vulnerability described in GLSA-202401-10 (Mozilla Firefox: Multiple Vulnerabilities)

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

Tenable has extracted the preceding description block directly from the Gentoo 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 remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6562-1 advisory.

    Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially     crafted website, an attacker could potentially exploit these to cause a denial of service, obtain     sensitive information across domains, or execute arbitrary code.(CVE-2023-6865, CVE-2023-6857,     CVE-2023-6858, CVE-2023-6859, CVE-2023-6866, CVE-2023-6867, CVE-2023-6861, CVE-2023-6869, CVE-2023-6871,     CVE-2023-6872, CVE-2023-6863, CVE-2023-6864, CVE-2023-6873)

    DoHyun Lee discovered that Firefox did not properly manage memory when used on systems with the Mesa VM     driver. An attacker could potentially exploit this issue to execute arbitrary code. (CVE-2023-6856)

    George Pantela and Hubert Kario discovered that Firefox using multiple NSS NIST curves which were     susceptible to a side-channel attack known as Minerva. An attacker could potentially exploit this issue     to obtain sensitive information. (CVE-2023-6135)

    Andrew Osmond discovered that Firefox did not properly validate the textures produced by remote decoders.
    An attacker could potentially exploit this issue to escape the sandbox. (CVE-2023-6860)

Tenable has extracted the preceding description block directly from the Ubuntu 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 remote Debian 11 / 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5582 advisory.

  - The signature of a digitally signed S/MIME email message may optionally specify the signature creation     date and time. If present, Thunderbird did not compare the signature creation date with the message date     and time, and displayed a valid signature despite a date or time mismatch. This could be used to give     recipients the impression that a message was sent at a different date or time. This vulnerability affects     Thunderbird < 115.6. (CVE-2023-50761)

  - When processing a PGP/MIME payload that contains digitally signed text, the first paragraph of the text     was never shown to the user. This is because the text was interpreted as a MIME message and the first     paragraph was always treated as an email header section. A digitally signed text from a different context,     such as a signed GIT commit, could be used to spoof an email message. This vulnerability affects     Thunderbird < 115.6. (CVE-2023-50762)

  - The WebGL `DrawElementsInstanced` method was susceptible to a heap buffer overflow when used on systems     with the Mesa VM driver. This issue could allow an attacker to perform remote code execution and sandbox     escape. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
    (CVE-2023-6856)

  - When resolving a symlink, a race may occur where the buffer passed to `readlink` may actually be smaller     than necessary. *This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS).
    Windows is unaffected.* This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox <     121. (CVE-2023-6857)

  - Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling.
    This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121. (CVE-2023-6858)

  - A use-after-free condition affected TLS socket creation when under memory pressure. This vulnerability     affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121. (CVE-2023-6859)

  - The `VideoBridge` allowed any content process to use textures produced by remote decoders. This could be     abused to escape the sandbox. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and     Firefox < 121. (CVE-2023-6860)

  - The `nsWindow::PickerOpen(void)` method was susceptible to a heap buffer overflow when running in headless     mode. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
    (CVE-2023-6861)

  - A use-after-free was identified in the `nsDNSService::Init`. This issue appears to manifest rarely during     start-up. This vulnerability affects Firefox ESR < 115.6 and Thunderbird < 115.6. (CVE-2023-6862)

  - Memory safety bugs present in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5. 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 ESR < 115.6, Thunderbird < 115.6, and     Firefox < 121. (CVE-2023-6864)

  - Memory safety bugs present in Firefox 120. 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 < 121. (CVE-2023-6873)

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

The remote Fedora 39 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2023-9de52d46bd advisory.

    Update NSS to 3.95     Update Firefox to 121.0

Tenable has extracted the preceding description block directly from the Fedora 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 remote Fedora 38 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2023-983329cf45 advisory.

    Update NSS to 3.95     Update to Firefox 121.0

Tenable has extracted the preceding description block directly from the Fedora 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 121.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-56 advisory.

  - Memory safety bugs present in Firefox 120. 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-2023-6873)

  - The WebGL <code>DrawElementsInstanced</code> method was susceptible to a heap buffer overflow when used on     systems with the Mesa VM driver. This issue could allow an attacker to perform remote code execution and     sandbox escape. (CVE-2023-6856)

  - Multiple NSS NIST curves were susceptible to a side-channel attack known as Minerva. This attack could     potentially allow an attacker to recover the private key. (CVE-2023-6135)

  - <code>EncryptingOutputStream</code> was susceptible to exposing uninitialized data. This issue could only     be abused in order to write data to a local disk which may have implications for private browsing mode.
    (CVE-2023-6865)

  - When resolving a symlink, a race may occur where the buffer passed to <code>readlink</code> may actually     be smaller than necessary.  This bug only affects Firefox on Unix-based operating systems (Android, Linux,     MacOS). Windows is unaffected. (CVE-2023-6857)

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 121.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-56 advisory.

  - Memory safety bugs present in Firefox 120. 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-2023-6873)

  - The WebGL <code>DrawElementsInstanced</code> method was susceptible to a heap buffer overflow when used on     systems with the Mesa VM driver. This issue could allow an attacker to perform remote code execution and     sandbox escape. (CVE-2023-6856)

  - Multiple NSS NIST curves were susceptible to a side-channel attack known as Minerva. This attack could     potentially allow an attacker to recover the private key. (CVE-2023-6135)

  - <code>EncryptingOutputStream</code> was susceptible to exposing uninitialized data. This issue could only     be abused in order to write data to a local disk which may have implications for private browsing mode.
    (CVE-2023-6865)

  - When resolving a symlink, a race may occur where the buffer passed to <code>readlink</code> may actually     be smaller than necessary.  This bug only affects Firefox on Unix-based operating systems (Android, Linux,     MacOS). Windows is unaffected. (CVE-2023-6857)

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	Type	Severity
253788	Linux Distros Unpatched Vulnerability : CVE-2023-6873	Nessus	Misc.	Local	high
214465	Debian dla-3698 : thunderbird - security update	Nessus	Debian Local Security Checks	Local	high
187727	GLSA-202401-10 : Mozilla Firefox: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	Local	critical
187406	Ubuntu 20.04 LTS : Firefox vulnerabilities (USN-6562-1)	Nessus	Ubuntu Local Security Checks	Local	high
187195	Debian DSA-5582-1 : thunderbird - security update	Nessus	Debian Local Security Checks	Local	high
187191	Fedora 39 : firefox / nss (2023-9de52d46bd)	Nessus	Fedora Local Security Checks	Local	high
187186	Fedora 38 : firefox / nss (2023-983329cf45)	Nessus	Fedora Local Security Checks	Local	high
187080	Mozilla Firefox < 121.0	Nessus	MacOS X Local Security Checks	Local	high
187079	Mozilla Firefox < 121.0	Nessus	Windows	Local	high

Detections

Analytics

CVE-2023-6873

high

Tenable Plugins

high

high

critical

high

high

high

high

high

high