CVE-2017-0248 Moderate severity vulnerability that affects Microsoft.AspNetCore.Mvc and Microsoft.AspNetCore.Mvc.Core
High 7.5
Published
Updated
Check this codebase for CVE-2017-0248 and fix it if it is affected.
What it is: CVE-2017-0248 is a high-severity vulnerability in Microsoft .Net Framework, published on 12 May 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-0248 in the wild and no public exploit code.
Affected packages and fixed versions:
- Microsoft.AspNetCore.Mvc (NuGet): affected from 1.0.0; fixed in 1.0.4
- Microsoft.AspNetCore.Mvc (NuGet): affected from 1.0.0; fixed in 1.0.4
- Microsoft.AspNetCore.Mvc (NuGet): affected from 1.1.0; fixed in 1.1.3
- Microsoft.AspNetCore.Mvc (NuGet): affected from 1.1.0; fixed in 1.1.3
- Microsoft.AspNetCore.Mvc.Abstractions (NuGet): affected from 1.0.0; fixed in 1.0.4
- Microsoft.AspNetCore.Mvc.Abstractions (NuGet): affected from 1.0.0; fixed in 1.0.4
- Microsoft.AspNetCore.Mvc.Abstractions (NuGet): affected from 1.1.0; fixed in 1.1.3
- Microsoft.AspNetCore.Mvc.Abstractions (NuGet): affected from 1.1.0; fixed in 1.1.3
- Microsoft.AspNetCore.Mvc.ApiExplorer (NuGet): affected from 1.0.0; fixed in 1.0.4
- Microsoft.AspNetCore.Mvc.ApiExplorer (NuGet): affected from 1.0.0; fixed in 1.0.4
- Microsoft.AspNetCore.Mvc.ApiExplorer (NuGet): affected from 1.1.0; fixed in 1.1.3
- Microsoft.AspNetCore.Mvc.ApiExplorer (NuGet): affected from 1.1.0; fixed in 1.1.3
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2017-0248/ (Markdown: https://insights.sbomify.com/CVE-2017-0248/index.md)
Attackers can bypass Enhanced Security Usage taggings in Microsoft .NET Framework by presenting invalid certificates, undermining security controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-0248?
CVE-2017-0248 is a high-severity vulnerability in Microsoft .Net Framework, published on 12 May 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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."
Weakness: CWE-295
Which versions are affected by CVE-2017-0248?
40 open source packages ship an affected version, including Microsoft.AspNetCore.Mvc, Microsoft.AspNetCore.Mvc.Abstractions and Microsoft.AspNetCore.Mvc.ApiExplorer. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
Microsoft.AspNetCore.Mvc NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Abstractions NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Abstractions NuGet | From 1.0.0 | 1.0.4 |
34 more packages
Microsoft.AspNetCore.Mvc.Abstractions NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Abstractions NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.ApiExplorer NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.ApiExplorer NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.ApiExplorer NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.ApiExplorer NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Core NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Core NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Core NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Core NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Cors NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Cors NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Cors NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Cors NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.DataAnnotations NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.DataAnnotations NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.DataAnnotations NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.DataAnnotations NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Formatters.Json NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Formatters.Json NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Formatters.Json NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Formatters.Json NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Formatters.Xml NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Formatters.Xml NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Formatters.Xml NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Formatters.Xml NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Localization NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Localization NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Localization NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Localization NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Razor NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Razor NuGet | From 1.0.0 | 1.0.4 |
Microsoft.AspNetCore.Mvc.Razor NuGet | From 1.1.0 | 1.1.3 |
Microsoft.AspNetCore.Mvc.Razor NuGet | From 1.1.0 | 1.1.3 |
Products include Microsoft .Net Framework.
How do I fix CVE-2017-0248?
Upgrade Microsoft.AspNetCore.Mvc to a fixed version for your release line: 1.0.4 or 1.1.3.
Is CVE-2017-0248 being exploited?
There is no known exploitation of CVE-2017-0248 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Microsoft .Net Framework
Sources
Also known as ECHO-a934-0cf3-abf5, GHSA-ch6p-4jcm-h8vh.