CVE-2022-0725: KeePass Information Disclosure Vulnerability

CVE-2022-0725 Overview

A critical information exposure vulnerability has been identified in KeePass password manager. The flaw exists due to improper handling of sensitive data, where plain text passwords are logged to the system log. This logging behavior creates a significant security risk, allowing attackers who can access system logs to read sensitive credentials stored within the password manager.

Critical Impact

Sensitive passwords stored in KeePass may be exposed in plain text through system logs, potentially compromising all credentials managed by the application.

Affected Products

• KeePass version 2.48
• Fedora Project Extra Packages for Enterprise Linux 7.0
• Fedora 35

Discovery Timeline

• 2022-03-10 - CVE-2022-0725 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2022-0725

Vulnerability Analysis

This vulnerability represents an Information Exposure flaw (CWE-200) combined with Insertion of Sensitive Information into Log File (CWE-532). The core issue stems from KeePass writing plaintext password data to system logs during normal operations. When users interact with the password manager—retrieving, copying, or auto-typing credentials—the sensitive password content may be captured in plaintext within system logging mechanisms.

The vulnerability is exploitable over the network without requiring user interaction or prior authentication. An attacker who gains access to system logs, either through direct system access, log aggregation services, or log backup files, can extract all passwords that have been logged in plaintext. This effectively bypasses the encryption protections that password managers are designed to provide.

Root Cause

The root cause of this vulnerability lies in improper logging practices within KeePass. The application fails to sanitize or redact sensitive credential data before writing to system logs. Password data that should remain encrypted and protected within the KeePass database is inadvertently exposed when the logging subsystem captures operations involving these credentials in plaintext format.

Attack Vector

An attacker can exploit this vulnerability through multiple vectors:

1. Local Access: An attacker with local system access can read system logs directly (e.g., /var/log/syslog, journal logs via journalctl, or Windows Event Logs)
2. Log Forwarding: In enterprise environments where logs are forwarded to centralized logging systems (SIEM, ELK stack, etc.), credentials may be exposed to administrators or attackers who compromise logging infrastructure
3. Backup Exposure: Log files included in system backups may expose historical credentials
4. Malware/APT: Malware with log reading capabilities can silently harvest credentials over time

The vulnerability manifests when KeePass operations involving credential access write sensitive data to system logs. Technical details and reproduction steps can be found in the Red Hat Bug Report #2052696.

Detection Methods for CVE-2022-0725

Indicators of Compromise

• Presence of password-like strings in system log files alongside KeePass process identifiers
• Unusual or unauthorized access to system log files or directories
• Log file access patterns indicating bulk log reading or exfiltration
• KeePass entries appearing in plaintext format within journalctl output or syslog files

Detection Strategies

• Configure log monitoring solutions to alert on sensitive data patterns appearing in system logs
• Implement file integrity monitoring (FIM) on log directories to detect unauthorized access
• Deploy endpoint detection rules to identify processes reading log files containing KeePass-related entries
• Review SIEM alerts for anomalous log access patterns from non-administrative users

Monitoring Recommendations

• Enable audit logging for all log file access, particularly /var/log/ directories and Windows Event Logs
• Monitor for KeePass process activity combined with logging subsystem interactions
• Implement data loss prevention (DLP) rules to detect credential patterns in log transmissions
• Regularly audit log retention and access policies to minimize exposure window

How to Mitigate CVE-2022-0725

Immediate Actions Required

• Upgrade KeePass to the latest available version that addresses this logging behavior
• Review and purge existing system logs that may contain exposed credentials
• Rotate all passwords that may have been logged during the vulnerable period
• Restrict access to system log files to essential administrative personnel only
• Disable or filter verbose logging for KeePass if configuration options permit

Patch Information

Organizations should update KeePass to the most recent version available from the official KeePass website. Additionally, Fedora users should apply available updates through their package manager:

# For Fedora systems
sudo dnf update keepass

Consult the Red Hat Bug Report #2052696 for additional vendor guidance and patch status information.

Workarounds

• Implement log rotation with short retention periods to minimize exposure window
• Configure log shipping solutions to filter or redact patterns matching password strings
• Restrict KeePass execution to isolated user accounts with limited log access
• Consider alternative password managers until a verified fix is confirmed for your deployment

# Example: Restrict log file permissions
sudo chmod 640 /var/log/syslog
sudo chown root:adm /var/log/syslog

# Example: Configure logrotate for aggressive rotation
# /etc/logrotate.d/syslog
/var/log/syslog {
    daily
    rotate 3
    compress
    delaycompress
    notifempty
    create 640 root adm
}