SB2021102007 - OS Command Injection in Six Apart Movable Type
Published: October 20, 2021 Updated: October 26, 2021
Security Bulletin ID
SB2021102007
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) OS Command Injection (CVE-ID: CVE-2021-20837)
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation in Movable Type XMLRPC API. A remote unauthenticated attacker can send a specially crafted message and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.