CVE-2022-32564
📋 TL;DR
CVE-2022-32564 is an information disclosure vulnerability in Couchbase Server's couchbase-cli tool where the server-eshell command leaks the Cluster Manager authentication cookie. This allows attackers with access to the CLI to potentially obtain sensitive authentication credentials. Affects Couchbase Server administrators and systems running vulnerable versions.
💻 Affected Systems
- Couchbase Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers obtain Cluster Manager credentials, leading to full cluster compromise, data exfiltration, or service disruption.
Likely Case
Privileged users or attackers with CLI access obtain authentication cookies, potentially escalating privileges within the Couchbase environment.
If Mitigated
Limited to authorized users with CLI access, with minimal impact if proper access controls and monitoring are in place.
🎯 Exploit Status
Exploitation requires access to the couchbase-cli interface and appropriate permissions to run the vulnerable command.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.0.4 and later
Vendor Advisory: https://docs.couchbase.com/server/current/release-notes/relnotes.html
Restart Required: Yes
Instructions:
1. Backup Couchbase Server configuration and data. 2. Download and install Couchbase Server 7.0.4 or later from official sources. 3. Follow Couchbase upgrade procedures for your deployment type. 4. Restart Couchbase services to apply the fix.
🔧 Temporary Workarounds
Restrict CLI Access
allLimit access to couchbase-cli tool to only authorized administrators
# Use system access controls to restrict who can execute couchbase-cli
# Example: chmod 750 /opt/couchbase/bin/couchbase-cli
# Configure sudo policies to restrict command execution
Monitor CLI Usage
allImplement logging and monitoring for couchbase-cli command execution
# Configure audit logging in Couchbase
# Monitor system logs for couchbase-cli execution
# Set up alerts for suspicious CLI activity
🧯 If You Can't Patch
- Implement strict access controls to limit who can use couchbase-cli
- Monitor and audit all couchbase-cli usage for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check Couchbase Server version: if version is earlier than 7.0.4, system is vulnerable.Check Version:
/opt/couchbase/bin/couchbase-cli server-info -c localhost:8091 -u Administrator -p password | grep versionVerify Fix Applied:
Confirm Couchbase Server version is 7.0.4 or later and test that server-eshell command no longer leaks authentication cookies.📡 Detection & Monitoring
Log Indicators:
- Unusual couchbase-cli server-eshell command executions
- Multiple authentication attempts from unexpected sources
- Cluster Manager cookie values appearing in logs
Network Indicators:
- Unusual CLI traffic patterns
- Authentication requests from unexpected IP addresses
SIEM Query:
source="couchbase" AND (command="server-eshell" OR "Cluster Manager cookie")