Vulnerabilities > CVE-2019-0982 - Data Processing Errors vulnerability in Microsoft Asp.Net Core 2.1/2.2

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
microsoft
CWE-19
nessus
NVD
Published: 2019-05-16
Updated: 2019-05-20

Summary

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka 'ASP.NET Core Denial of Service Vulnerability'.

Vulnerable Configurations

Part Description Count
Application
Microsoft
2

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • XML Nested Payloads
    Applications often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. By nesting XML data and causing this data to be continuously self-referential, an attacker can cause the XML parser to consume more resources while processing, causing excessive memory consumption and CPU utilization. An attacker's goal is to leverage parser failure to his or her advantage. In most cases this type of an attack will result in a denial of service due to an application becoming unstable, freezing, or crash. However it may be possible to cause a crash resulting in arbitrary code execution, leading to a jump from the data plane to the control plane [R.230.1].
  • XML Oversized Payloads
    Applications often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. By supplying oversized payloads in input vectors that will be processed by the XML parser, an attacker can cause the XML parser to consume more resources while processing, causing excessive memory consumption and CPU utilization, and potentially cause execution of arbitrary code. An attacker's goal is to leverage parser failure to his or her advantage. In many cases this type of an attack will result in a denial of service due to an application becoming unstable, freezing, or crash. However it is possible to cause a crash resulting in arbitrary code execution, leading to a jump from the data plane to the control plane [R.231.1].
  • XML Client-Side Attack
    Client applications such as web browsers that process HTML data often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. These adverse effects may include the parser crashing, consuming too much of a resource, executing too slowly, executing code supplied by an attacker, allowing usage of unintended system functionality, etc. An attacker's goal is to leverage parser failure to his or her advantage. In some cases it may be possible to jump from the data plane to the control plane via bad data being passed to an XML parser. [R.484.1]
  • XML Parser Attack
    Applications often need to transform data in and out of the XML format by using an XML parser. It may be possible for an attacker to inject data that may have an adverse effect on the XML parser when it is being processed. These adverse effects may include the parser crashing, consuming too much of a resource, executing too slowly, executing code supplied by an attacker, allowing usage of unintended system functionality, etc. An attacker's goal is to leverage parser failure to his or her advantage. In some cases it may be possible to jump from the data plane to the control plane via bad data being passed to an XML parser. [R.99.1]

Nessus

  • NASL familyWindows
    NASL idSMB_NT_MS19_MAY_ASPDOTNET_CORE.NASL
    descriptionThe Microsoft ASP.NET Core installation on the remote host is version 2.1.x < 2.1.11, 2.2.x < 2.2.5. It is, therefore, affected by a denial of service (DoS) vulnerability when ASP.NET Core improperly handles web requests. An unauthenticated, remote attacker could exploit this issue, via sending a specially crafted requests to the .NET Core application, to cause the application to stop responding.
    last seen2020-06-01
    modified2020-06-02
    plugin id125164
    published2019-05-16
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/125164
    titleSecurity Update for Microsoft ASP.NET Core (DoS) (May 2019)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(125164);
  script_version("1.4");
  script_cvs_date("Date: 2019/10/30 13:24:47");

  script_cve_id("CVE-2019-0980", "CVE-2019-0981", "CVE-2019-0982");
  script_bugtraq_id(108207, 108208);

  script_name(english:"Security Update for Microsoft ASP.NET Core (DoS) (May 2019)");
  script_summary(english:"Checks the version of Microsoft ASP.NET Core packages.");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft ASP.NET Core installations on the remote host contain vulnerable packages.");
  script_set_attribute(attribute:"description", value:
"The Microsoft ASP.NET Core installation on the remote
host is version 2.1.x < 2.1.11, 2.2.x < 2.2.5. It is, therefore,
affected by a denial of service (DoS) vulnerability when
ASP.NET Core improperly handles web requests. An unauthenticated,
remote attacker could exploit this issue, via sending a specially
crafted requests to the .NET Core application, to cause the
application to stop responding.");
  # https://devblogs.microsoft.com/dotnet/net-core-may-2019/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?75f23c84");
  # https://github.com/dotnet/announcements/issues/112
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d238d2f5");
  # https://github.com/dotnet/announcements/issues/113
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f495ef09");
  # https://github.com/aspnet/Announcements/issues/359
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cdcee111");
  script_set_attribute(attribute:"solution", value:
"Update ASP.NET Core, remove vulnerable packages and refer to vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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:N/I:N/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-2019-0980");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/05/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:aspnet_core");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("microsoft_asp_dotnet_core_win.nbin");
  script_require_keys("installed_sw/ASP .NET Core Windows");
  script_require_ports(139, 445);

  exit(0);
}

include('vcf.inc');

app = 'ASP .NET Core Windows';
app_info = vcf::get_app_info(app:app, win_local:TRUE);

constraints = [
  { 'min_version' : '2.1', 'fixed_version' : '2.1.11'},
  { 'min_version' : '2.2', 'fixed_version' : '2.2.5' }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);
  • NASL familyWindows
    NASL idSMB_NT_MS19_MAY_DOTNET_CORE_SDK.NASL
    descriptionThe Microsoft .NET Core SDK installation on the remote host is version 1.x < 1.1.14, 2.1.x < 2.1.507 or 2.1.604, 2.2.x < 2.2.107 or 2.2.204. It is, therefore, affected by a denial of service (DoS) vulnerability when .NET Core improperly handles web requests. An unauthenticated, remote attacker could exploit this issue, via sending a specially crafted requests to the .NET Core application, to cause the application to stop responding.
    last seen2020-06-01
    modified2020-06-02
    plugin id125225
    published2019-05-16
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/125225
    titleSecurity Update for .NET Core SDK (May 2019)
    code
    #
# (C) Tenable Network Security, Inc.
#
include("compat.inc");

if (description)
{
  script_id(125225);
  script_version("1.2");
  script_cvs_date("Date: 2019/10/30 13:24:47");

  script_cve_id(
    "CVE-2019-0820",
    "CVE-2019-0980",
    "CVE-2019-0981",
    "CVE-2019-0982"
  );
  script_bugtraq_id(108245, 108207, 108208);
  script_xref(name:"IAVA", value:"2019-A-0149");

  script_name(english:"Security Update for .NET Core SDK (May 2019)");
  script_summary(english:"Checks for Windows Install of .NET Core.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by a .NET Core SDK vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Microsoft .NET Core SDK installation on the remote host is version
1.x < 1.1.14, 2.1.x < 2.1.507 or 2.1.604, 2.2.x < 2.2.107 or 2.2.204.
It is, therefore, affected by a denial of service (DoS) vulnerability when
.NET Core improperly handles web requests. An unauthenticated,
remote attacker could exploit this issue, via sending a specially
crafted requests to the .NET Core application, to cause the
application to stop responding.");
  # https://devblogs.microsoft.com/dotnet/net-core-may-2019/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?75f23c84");
  # https://github.com/dotnet/announcements/issues/111
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bc7b707c");
  # https://github.com/dotnet/announcements/issues/112
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d238d2f5");
  # https://github.com/dotnet/announcements/issues/113
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f495ef09");
  # https://github.com/aspnet/Announcements/issues/359
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cdcee111");
  script_set_attribute(attribute:"solution", value:"Refer to vendor documentation.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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:N/I:N/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-2019-0980");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/05/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/16");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:.net_core");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("microsoft_dotnet_core_sdk_win.nbin");
  script_require_keys("installed_sw/.NET Core SDK Windows", "Settings/ParanoidReport");
  script_require_ports(139, 445);

  exit(0);
}

include('vcf.inc');

if (report_paranoia < 2) audit(AUDIT_PARANOID);

app = '.NET Core SDK Windows';

app_info = vcf::get_app_info(app:app, win_local:TRUE);

constraints = [
  { 'fixed_version' : '1.1.14' },
  { 'min_version' : '2.1', 'fixed_version' : '2.1.507' },
  { 'min_version' : '2.1.600', 'fixed_version' : '2.1.604'},
  { 'min_version' : '2.2', 'fixed_version' : '2.2.107' },
  { 'min_version' : '2.2.200', 'fixed_version' : '2.2.204'}
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);
  • NASL familyWindows
    NASL idSMB_NT_MS19_MAY_DOTNET_CORE.NASL
    descriptionThe Microsoft .NET Core installation on the remote host is version 1.0.x < 1.0.16, 1.1.x < 1.1.13, 2.1.x < 2.1.11, 2.2.x < 2.2.5. It is, therefore, affected by a denial of service (DoS) vulnerability when .NET Core improperly handles web requests. An unauthenticated, remote attacker could exploit this issue, via sending a specially crafted requests to the .NET Core application, to cause the application to stop responding.
    last seen2020-06-01
    modified2020-06-02
    plugin id125217
    published2019-05-16
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/125217
    titleSecurity Update for .NET Core (May 2019)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
#
include("compat.inc");

if (description)
{
  script_id(125217);
  script_version("1.3");
  script_cvs_date("Date: 2019/10/30 13:24:47");

  script_cve_id(
    "CVE-2019-0820",
    "CVE-2019-0980",
    "CVE-2019-0981",
    "CVE-2019-0982"
  );
  script_bugtraq_id(108245, 108207, 108208);
  script_xref(name:"IAVA", value:"2019-A-0149");

  script_name(english:"Security Update for .NET Core (May 2019)");
  script_summary(english:"Checks for Windows Install of .NET Core.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by a .NET Core denial of service vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft .NET Core installation on the remote host is version
1.0.x < 1.0.16, 1.1.x < 1.1.13, 2.1.x < 2.1.11, 2.2.x < 2.2.5.
It is, therefore, affected by a denial of service (DoS) vulnerability when
.NET Core improperly handles web requests. An unauthenticated,
remote attacker could exploit this issue, via sending a specially
crafted requests to the .NET Core application, to cause the
application to stop responding.");
  # https://devblogs.microsoft.com/dotnet/net-core-may-2019/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?75f23c84");
  # https://github.com/dotnet/announcements/issues/111
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bc7b707c");
  # https://github.com/dotnet/announcements/issues/112
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d238d2f5");
  # https://github.com/dotnet/announcements/issues/113
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f495ef09");
  # https://github.com/aspnet/Announcements/issues/359
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cdcee111");
  script_set_attribute(attribute:"solution", value:"Refer to vendor documentation.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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:N/I:N/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-2019-0980");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/05/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:.net_core");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("microsoft_dotnet_core_win.nbin");
  script_require_keys("installed_sw/.NET Core Windows");

  exit(0);
}

include('vcf.inc');

app = '.NET Core Windows';
app_info = vcf::get_app_info(app:app, win_local:TRUE);

constraints = [
  { 'min_version' : '1.0', 'fixed_version' : '1.0.16.5115', 'fixed_display' : '1.0.16 (1.0.16.5115)' },
  { 'min_version' : '1.1', 'fixed_version' : '1.1.13.1809', 'fixed_display' : '1.1.13 (1.1.13.1809)' },
  { 'min_version' : '2.1', 'fixed_version' : '2.1.11.27618', 'fixed_display' : '2.1.11 (2.1.11.27618)' },
  { 'min_version' : '2.2', 'fixed_version' : '2.2.5.27618', 'fixed_display' : '2.2.5 (2.2.5.27618)' }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);

References