High severity · published May 21, 2020
CVE-2020-1161
A denial of service vulnerability exists when ASP.NET Core improperly handles web requests
7.5
CVSS
5.3%
EPSS
No
On KEV
Description
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.
A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the ASP.NET Core application.
The update addresses the vulnerability by correcting how the ASP.NET Core web application handles web requests.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.3% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
Asp.net Core · Microsoft
3.1 · source: NVD
VS
Visual Studio 2017 · Microsoft
15.1 through 15.9 · source: NVD
VS
Visual Studio 2019 · Microsoft
16.0 through 16.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-1161
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-1161
msrc.microsoft.com
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1161
Patch
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1161
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