CVE-2017-0247

Description

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.

Weakness classification

• CWE-20: Improper Input Validation

Primary references

• secure@microsoft.com — Technical Description, Third Party Advisory
• secure@microsoft.com — Patch, Vendor Advisory
• secure@microsoft.com — Exploit, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Technical Description, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory