CVE-2019-1075: Microsoft.AspNetCore.App Open Redirect Vulnerability
MODERATECVE-2019-1075 is a MODERATE (CVSS 6.1) open redirect vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting Microsoft.AspNetCore.App libraries in the NuGet ecosystem. The issue involves open redirect in asp.net core. Remediation is available by upgrading affected packages to version 2.2.6, 2.1.12.
CVE-2019-1075 at a Glance
Security Impact
CVSS: 6.1
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).
How to Fix CVE-2019-1075
To remediate this vulnerability, upgrade all affected Microsoft.AspNetCore.App dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade Microsoft.AspNetCore.App to 2.2.6Upgrade Microsoft.AspNetCore.App to 2.1.12Upgrade Microsoft.AspNetCore.All to 2.2.6Upgrade Microsoft.AspNetCore.All to 2.1.12Upgrade Microsoft.AspNetCore.Server.IIS to 2.2.6Upgrade Microsoft.AspNetCore.Server.HttpSys to 2.2.6Upgrade Microsoft.AspNetCore.Server.HttpSys to 2.1.12Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for Microsoft.AspNetCore.AppHow to Check if You Are Affected
To determine whether your application is affected by CVE-2019-1075, inspect your project dependencies for Microsoft.AspNetCore.App:
inspect dependencies for Microsoft.AspNetCore.AppAnalyze the terminal output to locate any version of Microsoft.AspNetCore.App in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.2.6), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. In Microsoft.AspNetCore.App, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2019-1075 Affected Microsoft.AspNetCore.App Versions
7 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
Microsoft.AspNetCore.App
|
NuGet |
≥ 2.2.0
< 2.2.6
|
2.2.6
|
|
Microsoft.AspNetCore.App
|
NuGet |
≥ 2.1.0
< 2.1.12
|
2.1.12
|
|
Microsoft.AspNetCore.All
|
NuGet |
≥ 2.2.0
< 2.2.6
|
2.2.6
|
|
Microsoft.AspNetCore.All
|
NuGet |
≥ 2.1.0
< 2.1.12
|
2.1.12
|
|
Microsoft.AspNetCore.Server.IIS
|
NuGet |
≥ 2.2.0
< 2.2.6
|
2.2.6
|
|
Microsoft.AspNetCore.Server.HttpSys
|
NuGet |
≥ 2.2.0
< 2.2.6
|
2.2.6
|
|
Microsoft.AspNetCore.Server.HttpSys
|
NuGet |
≥ 2.1.0
< 2.1.12
|
2.1.12
|
References
Frequently Asked Questions
What is CVE-2019-1075?
Which Microsoft.AspNetCore.App versions are affected?
What version fixes CVE-2019-1075?
Is Microsoft.AspNetCore.App affected?
Is Microsoft.AspNetCore.All affected?
What is the CVSS score of CVE-2019-1075?
What CWE is associated with CVE-2019-1075?
How can I check NuGet dependencies for CVE-2019-1075?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-prrf-397v-83xh",
"modified" : "2022-07-07T23:23:59Z",
"published" : "2022-05-24T16:50:19Z",
"aliases" : [ "CVE-2019-1075" ],
"summary" : "Open redirect in ASP.NET Core",
"details" : "A spoofing vulnerability exists in ASP.NET Core that could lead to an open redirect, aka 'ASP.NET Core Spoofing Vulnerability'.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "NuGet",
"name" : "Microsoft.AspNetCore.App"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.2.0"
}, {
"fixed" : "2.2.6"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Microsoft.AspNetCore.App"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.1.0"
}, {
"fixed" : "2.1.12"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Microsoft.AspNetCore.All"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.2.0"
}, {
"fixed" : "2.2.6"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Microsoft.AspNetCore.All"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.1.0"
}, {
"fixed" : "2.1.12"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Microsoft.AspNetCore.Server.IIS"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.2.0"
}, {
"fixed" : "2.2.6"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Microsoft.AspNetCore.Server.HttpSys"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.2.0"
}, {
"fixed" : "2.2.6"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Microsoft.AspNetCore.Server.HttpSys"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.1.0"
}, {
"fixed" : "2.1.12"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-1075"
}, {
"type" : "WEB",
"url" : "https://github.com/aspnet/Announcements/issues/373"
}, {
"type" : "WEB",
"url" : "https://github.com/github/advisory-database/issues/302"
}, {
"type" : "WEB",
"url" : "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1075"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-601" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2022-07-07T23:23:59Z",
"nvd_published_at" : "2019-07-15T19:15:00Z"
}
}