6.5

CVE-2021-31207

Warnung
Exploit

Microsoft Exchange Server Security Feature Bypass Vulnerability

Microsoft Exchange Server Security Feature Bypass Vulnerability
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ Exchange Server Version 2013 Update cumulative_update_23
Microsoft ≫ Exchange Server Version 2016 Update cumulative_update_19
Microsoft ≫ Exchange Server Version 2016 Update cumulative_update_20
Microsoft ≫ Exchange Server Version 2019 Update cumulative_update_8
Microsoft ≫ Exchange Server Version 2019 Update cumulative_update_9

03.11.2021: CISA Known Exploited Vulnerabilities (KEV) Catalog

Microsoft Exchange Server Security Feature Bypass Vulnerability

Schwachstelle

Microsoft Exchange Server contains an unspecified vulnerability that allows for security feature bypass.

Beschreibung

Apply updates per vendor instructions.

Erforderliche Maßnahmen
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 99.78% 1
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.5 8 6.4
AV:N/AC:L/Au:S/C:P/I:P/A:P
NIST 6.6 0.7 5.9
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Microsoft 6.6 0.7 5.9
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE-434 Unrestricted Upload of File with Dangerous Type

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

http://packetstormsecurity.com/files/163895/Microsoft-Exchange-ProxyShell-Remote-Code-Execution.html
Third Party Advisory
Exploit
VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31207
Patch
Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-819/
Third Party Advisory
VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31207
US Government Resource