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
AI Score
Confidence
Low
EPSS
Percentile
57.7%
Telegram Desktop is prone to a protection mechanism bypass vulnerability.
# SPDX-FileCopyrightText: 2020 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.113767");
script_version("2024-02-15T05:05:40+0000");
script_tag(name:"last_modification", value:"2024-02-15 05:05:40 +0000 (Thu, 15 Feb 2024)");
script_tag(name:"creation_date", value:"2020-10-08 08:46:37 +0000 (Thu, 08 Oct 2020)");
script_tag(name:"cvss_base", value:"6.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2021-01-28 18:02:00 +0000 (Thu, 28 Jan 2021)");
script_tag(name:"qod_type", value:"registry");
script_tag(name:"solution_type", value:"VendorFix");
script_cve_id("CVE-2020-17448");
script_name("Telegram Desktop <= 2.1.13 Protection Mechanism Bypass Vulnerability - Windows");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2020 Greenbone AG");
script_family("General");
script_dependencies("gb_telegram_desktop_detect_win.nasl");
script_mandatory_keys("Telegram/Win/Ver");
script_tag(name:"summary", value:"Telegram Desktop is prone to a protection mechanism bypass vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"Telegram Desktop allows a spoofed file type to
bypass the Dangerous File Type Execution protection mechanism,
by using the chat windows with a filename that lacks an extension.");
script_tag(name:"impact", value:"Successful exploitation would for example allow an attacker
to execute arbitrary code on the target machine by sending a malicious file to the victim.");
script_tag(name:"affected", value:"Telegram Desktop through version 2.1.13.");
script_tag(name:"solution", value:"Update to version 2.2.0 or later.");
script_xref(name:"URL", value:"https://github.com/VijayT007/Vulnerability-Database/blob/master/Telegram-CVE-2020-17448");
exit(0);
}
CPE = "cpe:/a:telegram:tdesktop";
include( "host_details.inc" );
include( "version_func.inc" );
if( ! infos = get_app_version_and_location( cpe: CPE, exit_no_version: TRUE ) ) exit( 0 );
version = infos["version"];
location = infos["location"];
if( version_is_less( version: version, test_version: "2.2.0" ) ) {
report = report_fixed_ver( installed_version: version, fixed_version: "2.2.0", install_path: location );
security_message( data: report, port: 0 );
exit( 0 );
}
exit( 99 );
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
AI Score
Confidence
Low
EPSS
Percentile
57.7%