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CVE-2017-0247
Good to know:
Date: May 12, 2017
A denial of service vulnerability exists when the ASP.NET Core fails to properly validate web requests. NOTE: Microsoft has not commented on third-party claims that the issue is that the TextEncoder.EncodeCore function in the System.Text.Encodings.Web package in ASP.NET Core Mvc before 1.0.4 and 1.1.x before 1.1.3 allows remote attackers to cause a denial of service by leveraging failure to properly calculate the length of 4-byte characters in the Unicode Non-Character range.
Language: C#
Severity Score
Related Resources (6)
Severity Score
Weakness Type (CWE)
Input Validation
CWE-20Top Fix
Upgrade Version
Upgrade to version System.Text.Encodings.Web - 4.0.1,4.3.1, System.Net.Http - 4.1.2,4.3.2, System.Net.Http.WinHttpHandler - 4.0.2,4.5.4, System.Net.Security - 4.0.1,4.3.1, System.Net.WebSockets.Client - 4.0.1,4.3.1, Microsoft.AspNetCore.Mvc - 1.0.4,1.1.3,, Microsoft.AspNetCore.Mvc.Core - 1.0.4,1.1.3, Microsoft.AspNetCore.Mvc.Abstractions - 1.0.4,1.1.3, Microsoft.AspNetCore.Mvc.ApiExplorer - 1.0.4,1.1.3, Microsoft.AspNetCore.Mvc.Cors - 1.0.4,1.1.3, Microsoft.AspNetCore.Mvc.DataAnnotations - 1.0.4,1.1.3,,Microsoft.AspNetCore.Mvc.Formatters.Json - 1.0.4,1.1.3, Microsoft.AspNetCore.Mvc.Formatters.Xml - 1.0.4,1.1.3, Microsoft.AspNetCore.Mvc.Localization - 1.0.4,1.1.3, Microsoft.AspNetCore.Mvc.Razor.Host - 1.0.4,1.1.3, Microsoft.AspNetCore.Mvc.Razor 1.0.4,1.1.3, Microsoft.AspNetCore.Mvc.TagHelpers - 1.0.4,1.1.3, Microsoft.AspNetCore.Mvc.ViewFeatures - 1.0.4,1.1.3, Microsoft.AspNetCore.Mvc.WebApiCompatShim - 1.0.4,1.1.3
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | NONE |
| Integrity (I): | HIGH |
| Availability (A): | NONE |
CVSS v2
| Base Score: |
|
|---|---|
| Access Vector (AV): | NETWORK |
| Access Complexity (AC): | LOW |
| Authentication (AU): | NONE |
| Confidentiality (C): | NONE |
| Integrity (I): | PARTIAL |
| Availability (A): | NONE |
| Additional information: |