Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTZ4aDctNHYydy0zNnE2

ASP.NET Core fails to properly validate web requests

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.

Permalink: https://github.com/advisories/GHSA-6xh7-4v2w-36q6
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTZ4aDctNHYydy0zNnE2
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 5 years ago
Updated: 10 months ago

CVSS Score: 7.5
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Identifiers: GHSA-6xh7-4v2w-36q6, CVE-2017-0247
References:

• https://nvd.nist.gov/vuln/detail/CVE-2017-0247
• https://github.com/aspnet/Announcements/issues/239
• https://github.com/advisories/GHSA-6xh7-4v2w-36q6
• https://technet.microsoft.com/en-us/library/security/4021279.aspx
• https://www.sidertia.com/Home/Community/Blog/2017/05/18/ASPNET-Core-Unicode-Non-Char-Encoding-DoS

Affected Packages