CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
85.1%
Python is prone to a denial of service (DoS) 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("1.3.6.1.4.1.25623.1.0.113722");
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:"2020-07-16 07:51:36 +0000 (Thu, 16 Jul 2020)");
script_tag(name:"cvss_base", value:"5.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2021-01-20 15:15:00 +0000 (Wed, 20 Jan 2021)");
script_tag(name:"qod_type", value:"remote_banner_unreliable");
script_tag(name:"solution_type", value:"VendorFix");
script_cve_id("CVE-2019-20907");
script_name("Python <= 3.8.3 DoS Vulnerability - Linux");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2020 Greenbone AG");
script_family("Denial of Service");
script_dependencies("gb_python_consolidation.nasl", "os_detection.nasl");
script_mandatory_keys("python/detected", "Host/runs_unixoide");
script_tag(name:"summary", value:"Python is prone to a denial of service (DoS) vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"An attacker is able to craft a TAR archive leading to an infinite loop
when opened by tarfile.open, because _proc_pax lacks header validation.");
script_tag(name:"impact", value:"Successful exploitation would allow an attacker
to deny legitimate users access to the application or exhaust a system's resources.");
script_tag(name:"affected", value:"Python through version 3.8.3.");
script_tag(name:"solution", value:"Updates are available. Please see the references for more information.");
script_xref(name:"URL", value:"https://bugs.python.org/issue39017");
exit(0);
}
CPE = "cpe:/a:python:python";
include( "host_details.inc" );
include( "version_func.inc" );
if( isnull( port = get_app_port( cpe: CPE ) ) )
exit( 0 );
if( ! infos = get_app_version_and_location( cpe: CPE, port: port, exit_no_version: TRUE, version_regex: "^[0-9]+\.[0-9]+\.[0-9]+" ) )
exit( 0 );
version = infos["version"];
location = infos["location"];
if( version_is_less_equal( version: version, test_version: "3.8.3" ) ) {
report = report_fixed_ver( installed_version: version, fixed_version: "See references", install_path: location );
security_message( data: report, port: port );
exit( 0 );
}
exit( 99 );
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
85.1%