CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
99.9%
The version of RARLAB WinRAR installed on the remote Windows host is prior to 5.70 Beta 1. It is, therefore, affected by the following vulnerabilities :
An error exists in the file βunacev2.dllβ related to the βfilenameβ field, that allows a specially crafted ACE archive to overwrite files outside the destination folder. Such files could be in the system startup locations, and thus, lead to arbitrary code execution on next boot. (CVE-2018-20250)
An input-validation error exists in the file βunacev2.dllβ related to handling ACE archives and filenames that allows path traversal pattern checking to be bypassed. (CVE-2018-20251)
An out-of-bounds write error exists related to handling ACE and RAR file parsing that allows arbitrary code execution. (CVE-2018-20252)
An out-of-bounds write error exists related to handling LHA and LZH file parsing that allows arbitrary code execution. (CVE-2018-20253)
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(122448);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/08/24");
script_cve_id(
"CVE-2018-20250",
"CVE-2018-20251",
"CVE-2018-20252",
"CVE-2018-20253"
);
script_bugtraq_id(106948);
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/08/15");
script_xref(name:"CEA-ID", value:"CEA-2019-0078");
script_xref(name:"IAVA", value:"2020-A-0007-S");
script_name(english:"RARLAB WinRAR < 5.70 Beta 1 Multiple Vulnerabilities");
script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote Windows host is affected by
multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The version of RARLAB WinRAR installed on the remote Windows host is
prior to 5.70 Beta 1. It is, therefore, affected by the following
vulnerabilities :
- An error exists in the file 'unacev2.dll' related to
the 'filename' field, that allows a specially crafted
ACE archive to overwrite files outside the destination
folder. Such files could be in the system startup
locations, and thus, lead to arbitrary code execution on
next boot. (CVE-2018-20250)
- An input-validation error exists in the file
'unacev2.dll' related to handling ACE archives and
filenames that allows path traversal pattern checking
to be bypassed. (CVE-2018-20251)
- An out-of-bounds write error exists related to handling
ACE and RAR file parsing that allows arbitrary code
execution. (CVE-2018-20252)
- An out-of-bounds write error exists related to handling
LHA and LZH file parsing that allows arbitrary code
execution. (CVE-2018-20253)");
script_set_attribute(attribute:"see_also", value:"https://research.checkpoint.com/extracting-code-execution-from-winrar/");
script_set_attribute(attribute:"see_also", value:"https://github.com/Ridter/acefile");
script_set_attribute(attribute:"solution", value:
"Upgrade to WinRAR version 5.70 Beta 1 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-20253");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploit_framework_core", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'RARLAB WinRAR ACE Format Input Validation Remote Code Execution');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/02/20");
script_set_attribute(attribute:"patch_publication_date", value:"2019/02/20");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/02/27");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:rarlab:winrar");
script_set_attribute(attribute:"stig_severity", value:"II");
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) 2019-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("winrar_win_installed.nbin");
script_require_keys("installed_sw/RARLAB WinRAR", "SMB/Registry/Enumerated");
exit(0);
}
include("vcf.inc");
get_kb_item_or_exit("SMB/Registry/Enumerated");
app_info = vcf::get_app_info(app:"RARLAB WinRAR", win_local:TRUE);
constraints = [
{ "fixed_version" : "5.70.beta1", fixed_display: "5.70 Beta 1" }
];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
99.9%