CVE-2019-0545

Description

An information disclosure vulnerability exists in .NET Framework and .NET Core which allows bypassing Cross-origin Resource Sharing (CORS) configurations, aka ".NET Framework Information Disclosure Vulnerability." This affects Microsoft .NET Framework 2.0, Microsoft .NET Framework 3.0, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.5.2, Microsoft .NET Framework 4.6, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.7/4.7.1/4.7.2, .NET Core 2.1, Microsoft .NET Framework 4.7.1/4.7.2, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, .NET Core 2.2, Microsoft .NET Framework 4.7.2.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 6.00% Top 10%
Vendor Advisory redhat.com Vendor Advisory microsoft.com
Affected: Microsoft .NET Core
Affected: Microsoft Microsoft .NET Framework
Published at:
Updated at:

References

Link Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0545 patch vendor advisory
http://www.securityfocus.com/bid/106405 third party advisory vdb entry
https://access.redhat.com/errata/RHSA-2019:0040 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-0545?
CVE-2019-0545 has been scored as a high severity vulnerability.
How to fix CVE-2019-0545?
To fix CVE-2019-0545, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-0545 being actively exploited in the wild?
It is possible that CVE-2019-0545 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-0545?
CVE-2019-0545 affects Microsoft .NET Core, Microsoft Microsoft .NET Framework.
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