#VU11028 Privilege escalation in ASP.NET Core MVC


Published: 2018-03-13

Vulnerability identifier: #VU11028

Vulnerability risk: Low

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0787

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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

Vendor: Microsoft

Description
The vulnerability allows a remote attacker to gain elevated privileges on the target system.

The weakness exists due to improper validation of web requests by a Kestrel web application. A remote attacker can send a specially crafted request, containing injected HTML, initiate a "password reset" email to the target user, trigger as soon as the target user opens the "password reset" e-mail and gain system privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ASP.NET Core MVC: 2.0


External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0787


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