CVE-2024-38462
📋 TL;DR
This vulnerability in iRODS before version 4.3.2 involves the msiSendMail function's insecure dependency on the mail binary, allowing command injection. Attackers can execute arbitrary commands with the privileges of the iRODS server process. All iRODS installations using affected versions with mail functionality enabled are vulnerable.
💻 Affected Systems
- iRODS
📦 What is this software?
Irods by Irods
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise through remote code execution, allowing attackers to execute arbitrary commands with iRODS server privileges, potentially leading to data theft, system takeover, or lateral movement.
Likely Case
Command injection leading to unauthorized command execution, data exfiltration, or privilege escalation within the iRODS environment.
If Mitigated
Limited impact if proper input validation and sandboxing are implemented, though command injection attempts may still cause service disruption.
🎯 Exploit Status
Exploitation requires access to trigger the msiSendMail function, which typically requires some level of authentication or API access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.3.2
Vendor Advisory: https://irods.org/2024/05/irods-4-3-2-is-released/
Restart Required: Yes
Instructions:
1. Backup your iRODS configuration and data. 2. Download iRODS 4.3.2 from the official repository. 3. Stop the iRODS service. 4. Install the new version following iRODS upgrade procedures. 5. Restart the iRODS service. 6. Verify the installation.
🔧 Temporary Workarounds
Disable mail functionality
allRemove or disable the msiSendMail microservice to prevent exploitation
Comment out or remove mail-related rules in iRODS rule files
Remove msiSendMail from available microservices
Restrict mail binary access
linuxLimit the mail binary's permissions and capabilities
chmod 750 /usr/bin/mail
setfacl -m u:irods:rx /usr/bin/mail
🧯 If You Can't Patch
- Implement strict network segmentation to isolate iRODS servers from critical systems
- Deploy application-level firewalls or WAFs to monitor and block suspicious mail-related API calls
🔍 How to Verify
Check if Vulnerable:
Check iRODS version: 'irods_version' command or examine package version. If version is below 4.3.2, system is vulnerable.Check Version:
irods_versionVerify Fix Applied:
Verify iRODS version is 4.3.2 or higher: 'irods_version' should report 4.3.2+. Test mail functionality with controlled inputs.📡 Detection & Monitoring
Log Indicators:
- Unusual mail command executions in system logs
- Suspicious process spawns from iRODS service
- Error messages related to mail command failures
Network Indicators:
- Unexpected outbound connections from iRODS servers
- Unusual API calls to mail-related endpoints
SIEM Query:
source="irods.log" AND ("msiSendMail" OR "mail command" OR "command injection")🔗 References
- https://github.com/irods/irods/blob/97eb33f130349db5e01a4b85e89dd1da81460345/server/re/src/mailMS.cpp#L94-L106
- https://github.com/irods/irods/issues/7562
- https://github.com/irods/irods/issues/7651
- https://irods.org/2024/05/irods-4-3-2-is-released/
- https://github.com/irods/irods/blob/97eb33f130349db5e01a4b85e89dd1da81460345/server/re/src/mailMS.cpp#L94-L106
- https://github.com/irods/irods/issues/7562
- https://github.com/irods/irods/issues/7651
- https://irods.org/2024/05/irods-4-3-2-is-released/
