ProxyLogon is the formally generic name for CVE-2021-26855, a vulnerability on Microsoft Exchange Server that allows an attacker bypassing the authentication and impersonating as the admin. We have also chained this bug with another post-auth arbitrary-file-write vulnerability, CVE-2021-27065, to get code execution.
ProxyLogon is the formally generic name for CVE-2021-26855, a vulnerability on Microsoft Exchange Server that allows an attacker bypassing the authentication and impersonating as the admin. We have also chained this bug with another post-auth arbitrary-file-write vulnerability, CVE-2021-27065, to get code execution. (source: proxylogon.com)
The information provided on this Github repository is for educational purposes only. All information on this Github is provided in good faith, however I make no representation or warranty of any kind, express or implied, regarding the accuracy, adequacy, validity, reliability, availability, or completeness of any information.
If you want to test the vulnerability do so on your (non production) systems only
python ProxyLogon.py <hostname> <email>
The following security updates are available for the following Microsoft Exchange Server versions:
Source: https://www.ncsc.nl/actueel/nieuws/2021/maart/5/update-microsoft-exchange-server