CVE-2021-34473 PoC — Microsoft Exchange Server Remote Code Execution Vulnerability

Source

Associated Vulnerability

Description

Scanner for CVE-2021-34473, ProxyShell, A Microsoft Exchange On-premise Vulnerability

Readme

# CVE-2021-34473-scanner
Scanner for CVE-2021-34473, ProxyShell, A Microsoft Exchange On-premise Vulnerability

To test machines one by one, use scanner-CVE-2021-34473.bat:

scanner-CVE-2021-34473.bat mail.exemple.fr 

To test multiple machines at once, use mass-scanner and add ip/FQDN to check, one by line, in servers-to-check.txt:

mass-scanner-CVE-2021-34473.bat


Remediation depending on Exchange version:

Exchange 2019 CU10
Download
15.2.922.13
KB5004780
https://www.microsoft.com/en-us/download/details.aspx?id=103309

Exchange 2019 CU9
Download
15.2.858.15
KB5004780
https://www.microsoft.com/en-us/download/details.aspx?id=103308

Exchange 2016 CU21
Download
15.1.2308.14
KB5004779
https://www.microsoft.com/en-us/download/details.aspx?id=103310

Exchange 2016 CU20
Download
15.1.2242.12
KB5004779
https://www.microsoft.com/en-us/download/details.aspx?id=103310

Exchange 2013 CU23
Download
15.0.1497.23
KB5004778
https://www.microsoft.com/en-us/download/details.aspx?id=103312

File Snapshot

 [4.0K]  /data/pocs/6ebab760607f87be7f86a04b5968748b6ca09cae
├── [ 34K]  LICENSE
├── [ 375]  mass-scanner-CVE-2021-34473.bat
├── [ 990]  README.md
├── [ 448]  scanner-CVE-2021-34473.bat
└── [  42]  servers-to-check.txt

0 directories, 5 files

Remarks