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mscveMicrosoftMS:CVE-2020-0603
HistoryJan 14, 2020 - 8:00 a.m.

ASP.NET Core Remote Code Execution Vulnerability

2020-01-1408:00:00
Microsoft
msrc.microsoft.com
76

CVSS2

9.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.024

Percentile

90.0%

A remote code execution vulnerability exists in ASP.NET Core software when the software fails to handle client deleted connections.

An attacker who successfully exploited the vulnerability could run arbitrary code in memory on the server. Exploitation of the vulnerability requires that a user perform certain actions during the connection process.

The security update addresses the vulnerability by correcting how ASP.NET Core handles deleted connections.

CVSS2

9.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.024

Percentile

90.0%