Privilege escalation in Microsoft ASP.NET and .NET



Published: 2020-08-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-1476
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Microsoft .NET Framework
Server applications / Frameworks for developing and running applications

Vendor Microsoft

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU45631

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-1476

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to ASP.NET or .NET web applications running on IIS improperly allow access to cached files. A local user can send a specially crafted request and gain elevated privileges on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft .NET Framework: 2.0 - 4.8


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1476

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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