CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
84.6%
The version of Adobe Flash Player installed on the remote Windows host is equal or prior to version 32.0.0.371. It is, therefore, affected by an use after free vulnerability. An unauthenticated, remote attacker can exploit this, via a specially crafted file, to execute arbitrary code within the context of the user.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(137253);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");
script_cve_id("CVE-2020-9633");
script_xref(name:"IAVA", value:"2020-A-0246-S");
script_name(english:"Adobe Flash Player <= 32.0.0.371 (APSB20-30)");
script_set_attribute(attribute:"synopsis", value:
"The remote Windows host has a browser plugin installed that is
affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The version of Adobe Flash Player installed on the remote Windows host is equal or prior to version 32.0.0.371. It is,
therefore, affected by an use after free vulnerability. An unauthenticated, remote attacker can exploit this, via a
specially crafted file, to execute arbitrary code within the context of the user.");
script_set_attribute(attribute:"see_also", value:"https://helpx.adobe.com/security/products/flash-player/apsb20-30.html");
# http://helpx.adobe.com/flash-player/kb/archived-flash-player-versions.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0cb17c10");
script_set_attribute(attribute:"solution", value:
"Upgrade to Adobe Flash Player version 32.0.0.387 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:N/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-2020-9633");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/06/09");
script_set_attribute(attribute:"patch_publication_date", value:"2020/06/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:adobe:flash_player");
script_set_attribute(attribute:"stig_severity", value:"I");
script_set_attribute(attribute:"thorough_tests", value:"true");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows");
script_copyright(english:"This script is Copyright (C) 2020-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("flash_player_installed.nasl");
script_require_keys("SMB/Flash_Player/installed");
exit(0);
}
include("global_settings.inc");
include("misc_func.inc");
get_kb_item_or_exit("SMB/Flash_Player/installed");
# Identify vulnerable versions.
info = "";
variants = make_list(
"Plugin",
"ActiveX",
"Chrome",
"Chrome_Pepper"
);
# we're checking for versions less than *or equal to* the cutoff!
foreach variant (variants)
{
vers = get_kb_list("SMB/Flash_Player/"+variant+"/Version/*");
files = get_kb_list("SMB/Flash_Player/"+variant+"/File/*");
if (isnull(vers) || isnull(files))
continue;
foreach key (keys(vers))
{
ver = vers[key];
if (isnull(ver))
continue;
# <= 32.0.0.371
if (ver_compare(ver:ver,fix:"32.0.0.371",strict:FALSE) <= 0)
{
num = key - ("SMB/Flash_Player/"+variant+"/Version/");
file = files["SMB/Flash_Player/"+variant+"/File/"+num];
if (variant == "Plugin")
{
info += '\n Product : Browser Plugin (for Firefox / Netscape / Opera)';
fix = "32.0.0.387";
}
else if (variant == "ActiveX")
{
info += '\n Product : ActiveX control (for Internet Explorer)';
fix = "32.0.0.387";
}
else if ("Chrome" >< variant)
{
info += '\n Product : Browser Plugin (for Google Chrome)';
if (variant == "Chrome")
fix = "Upgrade to a version of Google Chrome running Flash Player 32.0.0.387";
}
info += '\n Path : ' + file +
'\n Installed version : ' + ver;
if (variant == "Chrome_Pepper")
info += '\n Fixed version : 32.0.0.387 (Chrome PepperFlash)';
else if (!isnull(fix))
info += '\n Fixed version : '+fix;
info += '\n';
}
}
}
if (info)
{
port = get_kb_item("SMB/transport");
if (!port) port = 445;
if (report_verbosity > 0) security_hole(port:port, extra:info);
else security_hole(port);
}
else
{
if (thorough_tests)
exit(0, 'No vulnerable versions of Adobe Flash Player were found.');
else
exit(1, 'Google Chrome\'s built-in Flash Player may not have been detected because the \'Perform thorough tests\' setting was not enabled.');
}
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
84.6%