CVE-2021-1723
ASP.NET Core and Visual Studio Denial of Service Vulnerability
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
ASP.NET Core and Visual Studio Denial of Service Vulnerability
Una Vulnerabilidad de Denegación de Servicio de ASP.NET Core y Visual Studio
A flaw was found in dotnet. Running callbacks outside of locks results in Krestel deadlock using HTTP2. The highest threat from this vulnerability is to system availability.
*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
- 2021-01-12 CVE Published
- 2024-10-08 CVE Updated
- 2024-10-09 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-833: Deadlock
CAPEC
References (4)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1723 | 2023-12-29 |
| URL | Date | SRC |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1723 | 2024-10-08 | |
| https://access.redhat.com/security/cve/CVE-2021-1723 | 2021-01-13 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1914258 | 2021-01-13 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Microsoft Search vendor "Microsoft" | Asp.net Core Search vendor "Microsoft" for product "Asp.net Core" | >= 3.1 <= 3.1.10 Search vendor "Microsoft" for product "Asp.net Core" and version " >= 3.1 <= 3.1.10" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Asp.net Core Search vendor "Microsoft" for product "Asp.net Core" | >= 5.0 <= 5.0.1 Search vendor "Microsoft" for product "Asp.net Core" and version " >= 5.0 <= 5.0.1" | - |
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
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 32 Search vendor "Fedoraproject" for product "Fedora" and version "32" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
| ||||||