Medium severity · published Jun 8, 2021
CVE-2021-31957
ASP.NET Core Denial of Service Vulnerability
5.9
CVSS
5.1%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.1% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N5
.NET 5.0 · Microsoft
5.0.0 before 5.0.7 · source: vendor
NC
.NET Core 3.1 · Microsoft
3.1 before 3.1.16 · source: vendor
MV
Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9) · Microsoft
16.10.0 before 16.10.1 · source: vendor
MV
Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) · Microsoft
16.0 before 16.4.23 · source: vendor
MV
Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) · Microsoft
16.0.0 before 16.7.16 · source: vendor
MV
Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) · Microsoft
15.0.0 before 16.9.7 · source: vendor
VS
Visual Studio 2019 for Mac version 8.10 · Microsoft
8.1.0 before 8.10.1 · source: vendor
NE
.net · Microsoft
5.0 through 5.0.6 · source: NVD
NC
.net Core · Microsoft
3.1 through 3.1.15 · source: NVD
FE
Fedora · Fedoraproject
33; 34 · source: NVD
VS
Visual Studio 2019 · Microsoft
16.0 through 16.10; 8.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-31957
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-31957
x_refsource_MISC
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31957
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PMHWHRRYDHKM6BIINW5V7OCSW4SDWB4W/
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4PRVVLXXQEF4SEJOBV3VRJHGX7YHY2CG/
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VMAO4NG2OQ4PCXUQWMNSCMYWLIJJY6UY/
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVCDYIP4A6DDRT7G6P3ZW6PKNK2DNWJ2/
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