Vulnerability · Published May 21, 2020 · Assigned by microsoft
CVE-2020-1055Microsoft Active Directory Federation Services Cross-Site Scripting Vulnerability
Medium 5.5
In plain English
A medium-severity cross-site scripting in Windows 10 Version 1809 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 84% of all known vulnerabilities).
Official description
A cross-site-scripting (XSS) vulnerability exists when Active Directory Federation Services (ADFS) does not properly sanitize user inputs. An un-authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected ADFS server. The attacker who successfully exploited the vulnerability could then perform cross-site scripting attacks on affected systems and run scripts in the security context of the current user. This security update addresses the vulnerability by ensuring that ADFS properly sanitizes user inputs.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – before publication |
| Microsoft | Windows 10 Version 1809 | 10.0.0 – before publication |
| Microsoft | Windows 10 Version 1903 for 32-bit Systems | 10.0.0 – before publication |
| Microsoft | Windows 10 Version 1903 for ARM64-based Systems | 10.0.0 – before publication |
| Microsoft | Windows 10 Version 1903 for x64-based Systems | 10.0.0 – before publication |
| Microsoft | Windows 10 Version 1909 | 10.0.0 – before publication |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – before publication |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – before publication |
| Microsoft | Windows Server, version 1903 (Server Core installation) | 10.0.0 – before publication |
| Microsoft | Windows Server, version 1909 (Server Core installation) | 10.0.0 – before publication |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
References
- Microsoft Active Directory Federation Services Cross-Site Scripting Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1055 x_refsource_MISC, x_transferred