Information disclosure in Microsoft .Net Framework
CVE-2019-0545
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.096 (95.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.084 · newest: 0.096 · change: +0.012
Affected products
- Microsoft .Net Framework — versions 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2, 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2, 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
- Microsoft .Net Core — versions 2.1, 2.2
- Microsoft .Net Core — versions 2.1, 2.2
- Microsoft .Net Framework — versions 2.0, 3.0, 3.5
- Microsoft Windows 10 — versions 1607, 1703, 1709
- Microsoft Windows 7
- Microsoft Windows 8.1
- Microsoft Windows Rt 8.1
- Microsoft Windows Server — versions 1709, 1803
- Microsoft Windows Server 2008 — versions r2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0545 (Patch, Vendor Advisory)
- www.securityfocus.com/bid/106405 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2019:0040 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-0545?
- CVE-2019-0545 is a high-severity vulnerability in Microsoft .Net Framework, classified under Information Disclosure. CVSS score: 7.5/10. Published 2019-01-08.
- How severe is CVE-2019-0545?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-0545 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.