#VU13773 Security restrictions bypass


Published: 2018-07-10 | Updated: 2018-07-10

Vulnerability identifier: #VU13773

Vulnerability risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8171

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ASP.NET Core MVC
Universal components / Libraries / Software for developers
ASP.NET Web Pages
Universal components / Libraries / Software for developers
ASP.NET MVC
Universal components / Libraries / Software for developers

Vendor: Microsoft

Description
The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The vulnerability exists in ASP.NET due to the number of incorrect login attempts is not validated. A remote unauthenticated attacker can try an infinite number of authentication attempts and bypass security restrictions to conduct further attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ASP.NET Core MVC: 1.0.0 - 2.0

ASP.NET Web Pages: 3.2.3

ASP.NET MVC: 5.2

External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8171

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability


Multiple vulnerabilities in Microsoft .NET Framework and ASP.NET