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
39.1%
The version of Firefox installed on the remote macOS or Mac OS X host is prior to 115.5. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-50 advisory.
On some systemsdepending on the graphics settings and driversit was possible to force an out-of-bounds read and leak memory data into the images created on the canvas element. (CVE-2023-6204)
It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. (CVE-2023-6205)
The black fade animation when exiting fullscreen is roughly the length of 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-2023-6206)
Ownership mismanagement led to a use-after-free in ReadableByteStreams (CVE-2023-6207)
When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard. This bug only affects Firefox on X11. Other systems are unaffected. (CVE-2023-6208)
Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal /…/ part in the path could be used to override the specified host. This could contribute to security problems in web sites. (CVE-2023-6209)
Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. 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-2023-6212)
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 mfsa2023-50.
# The text itself is copyright (C) Mozilla Foundation.
##
include('compat.inc');
if (description)
{
script_id(186031);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/22");
script_cve_id(
"CVE-2023-6204",
"CVE-2023-6205",
"CVE-2023-6206",
"CVE-2023-6207",
"CVE-2023-6208",
"CVE-2023-6209",
"CVE-2023-6212"
);
script_xref(name:"IAVA", value:"2023-A-0654-S");
script_name(english:"Mozilla Firefox < 115.5");
script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The version of Firefox installed on the remote macOS or Mac OS X host is prior to 115.5. It is, therefore, affected by
multiple vulnerabilities as referenced in the mfsa2023-50 advisory.
- On some systemsdepending on the graphics settings and driversit was possible to force an out-of-bounds
read and leak memory data into the images created on the canvas element. (CVE-2023-6204)
- It was possible to cause the use of a MessagePort after it had already been freed, which could potentially
have led to an exploitable crash. (CVE-2023-6205)
- The black fade animation when exiting fullscreen is roughly the length of 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-2023-6206)
- Ownership mismanagement led to a use-after-free in ReadableByteStreams (CVE-2023-6207)
- When using X11, text selected by the page using the Selection API was erroneously copied into the primary
selection, a temporary storage not unlike the clipboard. This bug only affects Firefox on X11. Other
systems are unaffected. (CVE-2023-6208)
- Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal /../ part in the
path could be used to override the specified host. This could contribute to security problems in web
sites. (CVE-2023-6209)
- Memory safety bugs present in Firefox 119, Firefox ESR 115.4, and Thunderbird 115.4. 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-2023-6212)
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/mfsa2023-50/");
script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox version 115.5 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-2023-6212");
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:"2023/11/21");
script_set_attribute(attribute:"patch_publication_date", value:"2023/11/21");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/11/21");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:firefox");
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:"MacOS X Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("macosx_firefox_installed.nasl");
script_require_keys("MacOSX/Firefox/Installed");
exit(0);
}
include('mozilla_version.inc');
var kb_base = 'MacOSX/Firefox';
get_kb_item_or_exit(kb_base+'/Installed');
var version = get_kb_item_or_exit(kb_base+'/Version', exit_code:1);
var path = get_kb_item_or_exit(kb_base+'/Path', exit_code:1);
var is_esr = get_kb_item(kb_base+'/is_esr');
if (is_esr) exit(0, 'The Mozilla Firefox installation is in the ESR branch.');
mozilla_check_version(version:version, path:path, product:'firefox', esr:FALSE, fix:'115.5', severity:SECURITY_HOLE);
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6204
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6205
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6206
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6207
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6208
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6209
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6212
www.mozilla.org/en-US/security/advisories/mfsa2023-50/
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
39.1%