Microsoft ASP.NET Core 2.1 Web Request data processing

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

A vulnerability, which was classified as problematic, has been found in Microsoft ASP.NET Core 2.1. This issue affects an unknown part of the component Web Request Handler. The manipulation with an unknown input leads to a data processing vulnerability. Using CWE to declare the problem leads to CWE-19. Impacted is availability. The summary by CVE is:

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka "ASP.NET Core Denial of Service Vulnerability." This affects ASP.NET Core 2.1. This CVE ID is unique from CVE-2019-0548.

The bug was discovered 01/08/2019. The weakness was disclosed 01/08/2019 with Microsoft as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The public release has been coordinated in cooperation with Microsoft. The identification of this vulnerability is CVE-2019-0564 since 11/26/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The advisory points out:

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against an ASP.NET Core web application. The vulnerability can be exploited remotely, without authentication.

The vulnerability scanner Nessus provides a plugin with the ID 121143 (RHEL 7 : dotNET (RHSA-2019:0040)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371584 (PowerShell Core Multiple .NET Vulnerabilities).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (121143) and SecurityFocus (BID 106413†). The entries VDB-126755 and VDB-128734 are pretty similar.

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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NVD Base Score: 7.5
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CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Data processing
CWE: CWE-19
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 121143
Nessus Name: RHEL 7 : dotNET (RHSA-2019:0040)
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Timelineinfo

11/26/2018 🔍
01/08/2019 +43 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
01/08/2019 +0 days 🔍
01/14/2019 +6 days 🔍
06/23/2023 +1621 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: RHSA-2019:0040
Organization: Microsoft
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2019-0564 (🔍)
SecurityFocus: 106413 - Microsoft ASP.NET CVE-2019-0564 Denial Of Service Vulnerability

See also: 🔍

Entryinfo

Created: 01/08/2019 10:29 PM
Updated: 06/23/2023 09:54 AM
Changes: 01/08/2019 10:29 PM (73), 04/26/2020 04:07 PM (6), 06/23/2023 09:54 AM (4)
Complete: 🔍
Cache ID: 18:ABC:40

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