Vulnerability in Microsoft Asp.net Core
CVE-2020-1597
A denial of service vulnerability exists when ASP.NET Core improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against an ASP.NET Core web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the ASP.NET Core application. The update addresses the vulnerability by correcting how the ASP.NET Core web application handles web requests.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.066 (93.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.066 · newest: 0.066 · change: 0.000
Affected products
- Microsoft Asp.net Core — versions 2.1, 3.1
- Microsoft Asp.net Core 2.1 — versions 2.0
- Microsoft Asp.net Core 3.1 — versions 3.0
- Microsoft Visual Studio 2017 Version 15.9 (Includes 15.0 - 15.8) — versions 15.9.0
- Microsoft Visual Studio 2019 Version 16.0 — versions 16.0
- Microsoft Visual Studio 2019 Version 16.4 (Includes 16.0 - 16.3) — versions 16.0
- Microsoft Visual Studio 2019 Version 16.7 (Includes 16.0 – 16.6) — versions 16.0.0
- Microsoft Visual Studio 2017
- Microsoft Visual Studio 2019
- Fedoraproject Fedora — versions 32, 33
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1597 (Patch, Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2020-1597?
- CVE-2020-1597 is a high-severity vulnerability in Microsoft Asp.net Core. CVSS score: 7.5/10. Published 2020-08-17.
- How severe is CVE-2020-1597?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-1597 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.