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nessusThis script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.MOZILLA_FIREFOX_115_6_ESR.NASL
HistoryDec 19, 2023 - 12:00 a.m.

Mozilla Firefox ESR < 115.6

2023-12-1900:00:00
This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
15
mozilla firefox
esr 115.6
vulnerabilities
heap buffer overflow
remote code execution
sandbox escape
use-after-free
memory safety bugs
webgl
encryptingoutputstream
readlink
nstextfragment
tls socket
videobridge
anti-clickjacking
nswindow
nsdnsservice
shutdownobserver
memory corruption

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

9.5

Confidence

High

EPSS

0.005

Percentile

77.7%

The version of Firefox ESR installed on the remote Windows host is prior to 115.6. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-54 advisory.

  • 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)

  • <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)

  • Firefox was susceptible to a heap buffer overflow in <code>nsTextFragment</code> due to insufficient OOM handling. (CVE-2023-6858)

  • A use-after-free condition affected TLS socket creation when under memory pressure. (CVE-2023-6859)

  • The <code>VideoBridge</code> allowed any content process to use textures produced by remote decoders.
    This could be abused to escape the sandbox. (CVE-2023-6860)

  • The timing of a button click causing a popup to disappear was approximately the same length as the anti- clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear. (CVE-2023-6867)

  • The <code>nsWindow::PickerOpen(void)</code> method was susceptible to a heap buffer overflow when running in headless mode. (CVE-2023-6861)

  • A use-after-free was identified in the <code>nsDNSService::Init</code>. This issue appears to manifest rarely during start-up. (CVE-2023-6862)

  • The <code>ShutdownObserver()</code> was susceptible to potentially undefined behavior due to its reliance on a dynamic type that lacked a virtual destructor. (CVE-2023-6863)

  • 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. (CVE-2023-6864)

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

#%NASL_MIN_LEVEL 80900
## 
# (C) Tenable, Inc.
#                                  
# The descriptive text and package checks in this plugin were
# extracted from Mozilla Foundation Security Advisory mfsa2023-54.
# The text itself is copyright (C) Mozilla Foundation.
##

include('compat.inc');

if (description)
{
  script_id(187077);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/26");

  script_cve_id(
    "CVE-2023-6856",
    "CVE-2023-6857",
    "CVE-2023-6858",
    "CVE-2023-6859",
    "CVE-2023-6860",
    "CVE-2023-6861",
    "CVE-2023-6862",
    "CVE-2023-6863",
    "CVE-2023-6864",
    "CVE-2023-6865",
    "CVE-2023-6867"
  );
  script_xref(name:"IAVA", value:"2023-A-0702-S");

  script_name(english:"Mozilla Firefox ESR < 115.6");

  script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Firefox ESR installed on the remote Windows host is prior to 115.6. It is, therefore, affected by
multiple vulnerabilities as referenced in the mfsa2023-54 advisory.

  - 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)

  - <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)

  - Firefox was susceptible to a heap buffer overflow in <code>nsTextFragment</code> due to insufficient OOM
    handling. (CVE-2023-6858)

  - A use-after-free condition affected TLS socket creation when under memory pressure. (CVE-2023-6859)

  - The <code>VideoBridge</code> allowed any content process to use textures produced by remote decoders.
    This could be abused to escape the sandbox. (CVE-2023-6860)

  - The timing of a button click causing a popup to disappear was approximately the same length as the anti-
    clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring
    them to click where the permission grant button would be about to appear. (CVE-2023-6867)

  - The <code>nsWindow::PickerOpen(void)</code> method was susceptible to a heap buffer overflow when running
    in headless mode. (CVE-2023-6861)

  - A use-after-free was identified in the <code>nsDNSService::Init</code>.  This issue appears to manifest
    rarely during start-up. (CVE-2023-6862)

  - The <code>ShutdownObserver()</code> was susceptible to potentially undefined behavior due to its reliance
    on a dynamic type that lacked a virtual destructor. (CVE-2023-6863)

  - 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. (CVE-2023-6864)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://www.mozilla.org/en-US/security/advisories/mfsa2023-54/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox ESR version 115.6 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-6864");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/12/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/12/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/12/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:firefox_esr");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("mozilla_org_installed.nasl");
  script_require_keys("Mozilla/Firefox/Version");

  exit(0);
}

include('mozilla_version.inc');

var port = get_kb_item('SMB/transport');
if (!port) port = 445;

var installs = get_kb_list('SMB/Mozilla/Firefox/*');
if (isnull(installs)) audit(AUDIT_NOT_INST, 'Firefox');

mozilla_check_version(installs:installs, product:'firefox', esr:TRUE, fix:'115.6', min:'115.0.0', severity:SECURITY_HOLE);

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

9.5

Confidence

High

EPSS

0.005

Percentile

77.7%