Home/CVE/Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to bypass Enhanced Security
CVE

CVE-2017-0248

Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to bypass Enhanced Security

Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to bypass Enhanced Security Usage taggings when they present a certificate that is invalid for a specific use, aka ".NET Security Feature Bypass Vulnerability.".

HIGH · CVSS 7.5 EPSS 0.01092
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-295Improper Certificate Validation
▤

Affected Products & Versions

1
microsoft .net frameworkall versions
▤

Affected Packages

19
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.AspNetCore.Mvc MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.Abstractions MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.ApiExplorer MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.Core MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.Cors MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.DataAnnotations MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.Formatters.Json MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.Formatters.Xml MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.Localization MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.Razor MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.Razor.Host MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.TagHelpers MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.ViewFeatures MODERATE fixed in 1.0.4
NuGet Microsoft.AspNetCore.Mvc.WebApiCompatShim MODERATE fixed in 1.0.4
NuGet System.Net.Http MODERATE fixed in 4.1.2
NuGet System.Net.Http.WinHttpHandler MODERATE fixed in 4.0.1
NuGet System.Net.Security MODERATE fixed in 4.0.1
NuGet System.Net.WebSockets.Client MODERATE fixed in 4.0.1
NuGet System.Text.Encodings.Web MODERATE fixed in 4.0.1
▣

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 NVD12 May 2017 · 02:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
⚑

Vendor Advisories

1
msrcCVE-2017-0248Security 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/98117Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038458
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0248PatchVendor Advisory
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
NVDCVE.orgCISAVulnersExploit-DBGitHub PoCVulnCheck KEVGreyNoise
Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities
Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs
Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures
Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1
About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service
threatengine.sh  ·  Open-source threat intelligence platform  ·  100+ authoritative sources  ·  Every fact traces to its origin