Vulnerability · Published Aug 8, 2023 · Assigned by microsoft
CVE-2023-35391ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability
Medium 6.2
In plain English
A medium-severity security flaw in ASP.NET Core 2.1 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)1.9%top 20.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | dotnet6-build | 6.0.121-r0 | ALPINE-CVE-2023-35391 |
| Alpine:v3.20 | dotnet6-runtime | 6.0.21-r0 | ALPINE-CVE-2023-35391 |
| NuGet | microsoft.aspnetcore.signalr.redis | 1.0.40 | GHSA-j8rm-cm55-qqj6 |
| NuGet | microsoft.aspnetcore.signalr.stackexchangeredis | 7.0.10 | GHSA-j8rm-cm55-qqj6 |
| NuGet | microsoft.aspnetcore.signalr.stackexchangeredis | 6.0.21 | GHSA-j8rm-cm55-qqj6 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | .NET 6.0 | 6.0.0 – before 6.0.21 |
| Microsoft | .NET 7.0 | 7.0.0 – before 7.0.10 |
| Microsoft | ASP.NET Core 2.1 | 2.0 – before 2.1.40 |
| Microsoft | Microsoft Visual Studio 2022 version 17.2 | 17.2.0 – before 17.2.18 |
| Microsoft | Microsoft Visual Studio 2022 version 17.4 | 17.4.0 – before 17.4.10 |
| Microsoft | Microsoft Visual Studio 2022 version 17.6 | 17.6.0 – before 17.6.6 |
References
- ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability vendor-advisory, patch