Auth bypass in Microsoft Asp.net
CVE-2018-8171
A Security Feature Bypass vulnerability exists in ASP.NET when the number of incorrect login attempts is not validated, aka "ASP.NET Security Feature Bypass Vulnerability." This affects ASP.NET, ASP.NET Core 1.1, ASP.NET Core 1.0, ASP.NET Core 2.0, ASP.NET MVC 5.2.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.108 (95.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.101 · newest: 0.108 · change: +0.007
Affected products
- Microsoft Asp.net — versions Web Pages 3.2.3 on Microsoft Visual Studio 2013 Update 5, Web Pages 3.2.3 on Microsoft Visual Studio 2015 Update 3
- Microsoft Asp.net Core — versions 1.0, 1.1, 2.0
- Microsoft Asp.net Core — versions 1.0, 1.1, 2.0
- Microsoft Asp.net Model View Controller — versions 5.2
- Microsoft Asp.net Mvc 5.2 — versions Microsoft Visual Studio 2013 Update 5, Microsoft Visual Studio 2015 Update 3
- Microsoft Asp.net Webpages — versions 3.2.3
Weakness classification (CWE)
References
- www.securitytracker.com/id/1041267 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/104659 (VDB Entry, Third Party Advisory, vdb-entry)
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8171 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-8171?
- CVE-2018-8171 is a high-severity vulnerability in Microsoft Asp.net, classified under Improper Authentication. CVSS score: 7.5/10. Published 2018-07-11.
- How severe is CVE-2018-8171?
- High severity. CVSS v3 base score is 7.5 out of 10.