CVE-2021-1721
.NET Core and Visual Studio Denial of Service Vulnerability
Severity Score
6.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
.NET Core and Visual Studio Denial of Service Vulnerability
Una Vulnerabilidad de Denegación de Servicio de .NET Core y Visual Studio
A flaw was found in dotnet. A recursion error when building X.509 certificate chains can lead to a stack overflow which could crash the system. The highest threat from this vulnerability is to system availability.
.NET Core is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET Core that address a security vulnerability are now available. The updated versions are .NET Core SDK 3.1.112 and .NET Core Runtime 3.1.12. Issues addressed include a denial of service vulnerability.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2020-12-02 CVE Reserved
- 2021-02-11 CVE Published
- 2024-08-03 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-674: Uncontrolled Recursion
CAPEC
References (3)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1721 | 2023-12-29 |
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2021-1721 | 2021-02-10 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1926918 | 2021-02-10 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Microsoft Search vendor "Microsoft" | .net Search vendor "Microsoft" for product ".net" | >= 5.0 <= 5.0.2 Search vendor "Microsoft" for product ".net" and version " >= 5.0 <= 5.0.2" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | .net Core Search vendor "Microsoft" for product ".net Core" | >= 2.1 <= 2.1.24 Search vendor "Microsoft" for product ".net Core" and version " >= 2.1 <= 2.1.24" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | .net Core Search vendor "Microsoft" for product ".net Core" | >= 3.1 <= 3.1.11 Search vendor "Microsoft" for product ".net Core" and version " >= 3.1 <= 3.1.11" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Powershell Core Search vendor "Microsoft" for product "Powershell Core" | 7.0 Search vendor "Microsoft" for product "Powershell Core" and version "7.0" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Powershell Core Search vendor "Microsoft" for product "Powershell Core" | 7.1 Search vendor "Microsoft" for product "Powershell Core" and version "7.1" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Visual Studio 2017 Search vendor "Microsoft" for product "Visual Studio 2017" | >= 15.0 <= 15.9 Search vendor "Microsoft" for product "Visual Studio 2017" and version " >= 15.0 <= 15.9" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Visual Studio 2019 Search vendor "Microsoft" for product "Visual Studio 2019" | >= 16.0 <= 16.8 Search vendor "Microsoft" for product "Visual Studio 2019" and version " >= 16.0 <= 16.8" | - |
Affected
| ||||||