5.5

CVE-2018-8356: microsoft asp.net_core Improper Certificate Validation

CVSS: 5.5v3.0MediumModified
AliasesGHSA-p9wx-v264-q34p
Published 11-07-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-8356 is a medium (CVSS 5.5) Improper Certificate Validation vulnerability in microsoft asp.net_core. EPSS estimates a 0.75% chance of exploitation in the next 30 days, higher than 54% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.0 (NVD)
EPSS score
0.75%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-07-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

A security feature bypass vulnerability exists when Microsoft .NET Framework components do not correctly validate certificates, aka ".NET Framework Security Feature Bypass Vulnerability." This affects .NET Framework 4.7.2, Microsoft .NET Framework 3.0, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, ASP.NET Core 1.1, Microsoft .NET Framework 4.5.2, ASP.NET Core 2.0, ASP.NET Core 1.0, .NET Core 1.1, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, .NET Core 1.0, .NET Core 2.0, Microsoft .NET Framework 4.6, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2, Microsoft .NET Framework 4.7.2.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.75%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

0.00 pp

From 0.75% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.75%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Microsoft6 products
  • asp.net_core1.0 | 1.1 | 2.0
  • microsoft .net frameworkEOL3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 | 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | 3.5 on Windows 10 for 32-bit Systems | 3.5 on Windows 10 for x64-based Systems | 3.5 on Windows 10 Version 1607 for 32-bit Systems | 3.5 on Windows 10 Version 1607 for x64-based Systems | 3.5 on Windows 10 Version 1703 for 32-bit Systems | 3.5 on Windows 10 Version 1703 for x64-based Systems | 3.5 on Windows 10 Version 1709 for 32-bit Systems | 3.5 on Windows 10 Version 1709 for x64-based Systems | 3.5 on Windows 10 Version 1803 for 32-bit Systems | 3.5 on Windows 10 Version 1803 for x64-based Systems | 3.5 on Windows 8.1 for 32-bit systems | 3.5 on Windows 8.1 for x64-based systems | 3.5 on Windows Server 2012 | 3.5 on Windows Server 2012 (Server Core installation) | 3.5 on Windows Server 2012 R2 | 3.5 on Windows Server 2012 R2 (Server Core installation) | 3.5 on Windows Server 2016 | 3.5 on Windows Server 2016 (Server Core installation) | 3.5 on Windows Server, version 1709 (Server Core Installation) | 3.5 on Windows Server, version 1803 (Server Core Installation) | 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 | 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 | 3.5.1 on Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1 | 4.5.2 on Windows 7 for x64-based Systems Service Pack 1 | 4.5.2 on Windows 8.1 for 32-bit systems | 4.5.2 on Windows 8.1 for x64-based systems | 4.5.2 on Windows RT 8.1 | 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2 | 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | 4.5.2 on Windows Server 2012 | 4.5.2 on Windows Server 2012 (Server Core installation) | 4.5.2 on Windows Server 2012 R2 | 4.5.2 on Windows Server 2012 R2 (Server Core installation) | 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2 | 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2 | 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems | 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems | 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 | 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation) | 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems | 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems | 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows 7 for 32-bit Systems Service Pack 1 | 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows 7 for x64-based Systems Service Pack 1 | 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows 8.1 for 32-bit systems | 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows 8.1 for x64-based systems | 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows RT 8.1 | 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2012 | 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) | 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2012 R2 | 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation) | 4.7.2 on Windows 10 Version 1803 for 32-bit Systems | 4.7.2 on Windows 10 Version 1803 for x64-based Systems | 4.7.2 on Windows Server, version 1803 (Server Core Installation)
  • .net_core1.0 | 1.1 | 2.0
  • .net_framework4.7.2 Developer Pack | 3.0:sp2 | 3.5 | 3.5.1 | 4.5.2 | 4.6 | 4.6.2 | 4.7 | 4.7.1 | 4.7.2 | 4.6.1
  • .net_framework_developer_pack4.7.2
NuGet6 products
  • System.Private.ServiceModel≥ 4.0.0, < 4.1.3 | ≥ 4.3.0, < 4.3.3 | ≥ 4.4.0, < 4.4.4 | ≥ 4.5.0, < 4.5.3
  • System.ServiceModel.Duplex≥ 4.3.0, < 4.3.3 | ≥ 4.4.0, < 4.4.4 | ≥ 4.5.0, < 4.5.3 | ≥ 4.0.0, < 4.0.4
  • System.ServiceModel.Http≥ 4.3.0, < 4.3.3 | ≥ 4.4.0, < 4.4.4 | ≥ 4.5.0, < 4.5.3 | ≥ 4.0.0, < 4.1.3
  • System.ServiceModel.NetTcp≥ 4.3.0, < 4.3.3 | ≥ 4.4.0, < 4.4.4 | ≥ 4.5.0, < 4.5.3 | ≥ 4.0.0, < 4.1.3
  • System.ServiceModel.Primitives≥ 4.3.0, < 4.3.3 | ≥ 4.4.0, < 4.4.4 | ≥ 4.5.0, < 4.5.3 | ≥ 4.0.0, < 4.1.3

2 vendors · 12 products

References

6 links