Vulnerability · Published Aug 17, 2020 · Assigned by microsoft

CVE-2020-1476ASP.NET and .NET Elevation of Privilege Vulnerability

Medium 5.5

In plain English

A medium-severity security flaw in Microsoft .NET Framework 2.0 Service Pack 2 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 67% of all known vulnerabilities).

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)1.1%top 33.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files. To exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server. The update addresses the vulnerability by changing how ASP.NET and .NET handle requests.

Affected products (as reported)

VendorProductVersions
Microsoft Microsoft .NET Framework 4.8 4.8.0 – before publication
Microsoft Microsoft .NET Framework 3.5 AND 4.8 4.8.0 – before publication
Microsoft Microsoft .NET Framework 2.0 Service Pack 2 2.0.0 – before publication
Microsoft Microsoft .NET Framework 4.5.2 4.0.0.0 – before publication
Microsoft Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 4.0.0.0 – before publication
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 4.7.0 – before publication
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 3.0.0.0 – before publication
Microsoft Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 3.5.0 – before publication
Microsoft Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 3.0 – before publication
Microsoft Microsoft .NET Framework 4.6 4.0.0.0 – before publication
Microsoft Microsoft .NET Framework 3.5 3.5.0 – before publication
Microsoft Microsoft .NET Framework 3.5.1 3.5.0 – before publication

References