CVE-2017-11879 json
Open redirect in ASP.NET Core
published 2017-11-15 8 y ago modified 2026-06-17 4 mo ago also GHSA-3wcj-rg8q-9cqv , EUVD-2022-2253
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 9.4%
- EPSS 9.4% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known
Summary
ASP.NET Core 2.0 allows an attacker to steal log-in session information such as cookies or authentication tokens via a specially crafted URL aka "ASP.NET Core Elevation Of Privilege Vulnerability".
Patch / fix
- nuget Microsoft.AspNetCore.All 2.0.3
- nuget Microsoft.AspNetCore.Mvc.Core 2.0.1
Exploit prediction
9.40% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
| GitHub | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | Microsoft.AspNetCore.All | >=2.0.0, <2.0.3 |
2.0.3 |
| nuget | Microsoft.AspNetCore.Mvc.Core | >=2.0.0, <2.0.1 |
2.0.1 |
Affected products
- Microsoft Corporation ASP.NET Core
Classification
- Weakness
-
- CWE-601 URL Redirection to Untrusted Site
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2017-11879
web, issue-tracking, patch, vendor-advisory
-
securityfocus.com
/bid/101713
vdb-entry, third-party-advisory
-
securitytracker.com
/id/1039793
vdb-entry, issue-tracking, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2017-11879
advisory
-
github.com
/aspnet/Announcements/issues/277
web
-
github.com
/github/advisory-database/issues/302
web
Sources
- CVE List CVE-2017-11879
- GitHub Advisory GHSA-3wcj-rg8q-9cqv
- NVD CVE-2017-11879
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.