CVE-2017-11770: microsoft corporation .net core Improper Certificate Validation
Vulnerability summary
CVE-2017-11770 is a high (CVSS 7.5) Improper Certificate Validation vulnerability in microsoft corporation .net core. EPSS estimates a 5.42% chance of exploitation in the next 30 days, higher than 92.6% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 15-11-2017PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
.NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly parsing certificate data. A denial of service vulnerability exists when .NET Core improperly handles parsing certificate data, aka ".NET CORE Denial Of Service Vulnerability".
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · NugetEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
5.42%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
0.00 pp
From 5.42% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
NuGet2 products
- Microsoft.NETCore.App≥ 1.0.0, < 2.0.3
- System.Security.Cryptography.X509Certificates≥ 4.0.0, < 4.1.2
Microsoft1 product
- aspnetcore1.0 | 1.1 | 2.0
Microsoft corporation1 product
- .net core.NET Core 1.0, .NET Core 1.1, and .NET Core 2.0
3 vendors · 4 products
References
5 links
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11770X Refsource CONFIRMPatchVendor AdvisoryWEB