Vulnerability Name:

CVE-2021-31957 (CCN-202496)

Assigned:2021-06-08
Published:2021-06-08
Updated:2023-08-01
Summary:
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.9 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.2 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
5.4 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-31957

Source: XF
Type: UNKNOWN
ms-dotnet-cve202131957-dos(202496)

Source: secure@microsoft.com
Type: UNKNOWN
secure@microsoft.com

Source: secure@microsoft.com
Type: UNKNOWN
secure@microsoft.com

Source: secure@microsoft.com
Type: UNKNOWN
secure@microsoft.com

Source: secure@microsoft.com
Type: UNKNOWN
secure@microsoft.com

Source: CCN
Type: Microsoft Security TechCenter - June 2021
.NET Core and Visual Studio Denial of Service Vulnerability

Source: secure@microsoft.com
Type: Patch, Vendor Advisory
secure@microsoft.com

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*
    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:microsoft:.net_core:3.1:-:*:*:*:*:*:*
  • OR cpe:/a:microsoft:visual_studio_2019:16.4:*:*:*:*:*:*:*
  • OR cpe:/a:microsoft:.net_core:5.0:-:*:*:*:*:*:*
  • OR cpe:/a:microsoft:visual_studio_2019:16.7:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.redhat.rhsa:def:20212352
    P
    		RHSA-2021:2352: .NET Core 3.1 security and bugfix update (Important)
    2021-06-09
    oval:com.redhat.rhsa:def:20212353
    P
    		RHSA-2021:2353: .NET 5.0 security and bugfix update (Important)
    2021-06-09
    BACK
    microsoft .net core 3.1
    microsoft visual studio 2019 16.4
    microsoft .net core 5.0
    microsoft visual studio 2019 16.7