Home/CVE/Microsoft .NET Framework 2.0 SP2, 3.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, .NET Core 1.0 and 2.0, and
CVE

CVE-2018-0786

Microsoft .NET Framework 2.0 SP2, 3.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, .NET Core 1.0 and 2.0, and

Microsoft .NET Framework 2.0 SP2, 3.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, .NET Core 1.0 and 2.0, and PowerShell Core 6.0.0 allow a security feature bypass vulnerability due to the way certificates are validated, aka ".NET Security Feature Bypass Vulnerability.".

HIGH · CVSS 7.5 EPSS 0.02026
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules2 YARA rules0
⬡

Weakness Classification

CWE-295Improper Certificate Validation
▤

Affected Products & Versions

3
microsoft .net coreall versions
microsoft powershell coreall versions
microsoft .net frameworkall versions
▤

Affected Packages

7
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
NuGet Microsoft.NETCore.UniversalWindowsPlatform HIGH fixed in 5.2.4
NuGet System.Private.ServiceModel HIGH fixed in 4.4.1
NuGet System.ServiceModel.Duplex HIGH fixed in 4.4.1
NuGet System.ServiceModel.Http HIGH fixed in 4.4.1
NuGet System.ServiceModel.NetTcp HIGH fixed in 4.4.1
NuGet System.ServiceModel.Primitives HIGH fixed in 4.4.1
NuGet System.ServiceModel.Security HIGH fixed in 4.4.1
◈

Sigma Hunt Rules

2
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPowerShell Core DLL Loaded Via Office Application
productmediumPowerShell Core DLL Loaded By Non PowerShell Process
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.0 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Jan 2018 · 01:29 AM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
⚑

Vendor Advisories

1
msrcCVE-2018-0786Security Feature Bypass
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/102380Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040152Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0786PatchVendor Advisory
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