CVSS3
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
Confidence
High
EPSS
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);
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6856
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6857
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6858
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6859
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6860
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6861
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6862
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6863
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6864
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6865
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6867
www.mozilla.org/en-US/security/advisories/mfsa2023-54/
CVSS3
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
Confidence
High
EPSS
Percentile
77.7%