CVE-2020-0796 – CVE-2020-0796 Pre-Auth POC

(c) 2020 ZecOps, Inc. – https://www.zecops.com – Find Attackers’ Mistakes

POC to check for CVE-2020-0796 / “SMBGhost”
Expected outcome: Blue Screen
Intended only for educational and testing in corporate environments.
ZecOps takes no responsibility for the code, use at your own risk.
Please contact [email protected] if you are interested in agent-less DFIR tools for Servers, Endpoints, and Mobile Devices to detect SMBGhost and other types of attacks automatically.

Usage

CVE-2020-0796-POC.exe [<TargetServer>]

If <TargetServer> is omitted, the POC is executed on localhost (127.0.0.1).

Compiled POC

You can get the compiled POC here.

Compiling

Use Visual Studio to compile the following projects:

1. ProtoSDKAsn1BaseAsn1Base.csproj
2. ProtoSDKMS-XCAXca.csproj
3. ProtoSDKMS-SMB2Smb2.sln

Use the resulting exe file to run the POC.

References

• Vulnerability Reproduction: CVE-2020-0796 POC – ZecOps Blog
• CVE-2020-0796 – Microsoft Security Response Center
• SMBGhost Analysis – Lucas Georges