CVE-2017-0247

EPSS 16.9%

Vexday Risk Score

8Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 16.9%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

12 May 2017Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

Affected products

Microsoft Corporation · ASP.NET Core

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://github.com/aspnet/Announcements/issues/239 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