Microsoft ASP.NET Core Security Feature Bypass Vulnerability
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.1.22, 4.1.1, 3.1.8
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
<p>A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.</p> <p>The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.</p> <p>The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.</p>
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- Microsoft ASP.NET Core 2.1
From 2.0
- Microsoft ASP.NET Core 3.1
From 3.0
- Microsoft.AspNetCore.HttpNuGet
fixed in 2.1.22
- Microsoft.AspNetCore.AppNuGet
fixed in 2.1.22
- Microsoft.OwinNuGet
fixed in 4.1.1
- Microsoft.AspNetCore.App.Runtime.linux-armNuGet
From 3.1.0 · fixed in 3.1.8
- Microsoft.AspNetCore.App.Runtime.linux-arm64NuGet
From 3.1.0 · fixed in 3.1.8
- Microsoft.AspNetCore.App.Runtime.linux-musl-x64NuGet
From 3.1.0 · fixed in 3.1.8
- Microsoft.AspNetCore.App.Runtime.linux-x64NuGet
From 3.1.0 · fixed in 3.1.8
- Microsoft.AspNetCore.App.Runtime.osx-x64NuGet
From 3.1.0 · fixed in 3.1.8
- Microsoft.AspNetCore.App.Runtime.win-armNuGet
From 3.1.0 · fixed in 3.1.8
- Microsoft.AspNetCore.App.Runtime.win-x64NuGet
From 3.1.0 · fixed in 3.1.8
- Microsoft.AspNetCore.App.Runtime.win-x86NuGet
From 3.1.0 · fixed in 3.1.8
- Microsoft.AspNetCore.App.Runtime.linux-musl-arm64NuGet
From 3.1.0 · fixed in 3.1.8
- Microsoft.AspNetCore.App.Runtime.win-arm64NuGet
From 3.1.5 · fixed in 3.1.8