CVE-2025-2277 exposes SSH passwords due to missing masking in Devolutions Server (2024.3.13 and earlier). The web-based SSH authentication component fails to hide sensitive credentials during input, allowing shoulder surfing or screen capture attacks. When users authenticate via the web interface, their typed passwords remain visible in cleartext, violating secure input practices. This flaw stems from improper frontend validation, where password fields lack the `type=”password”` attribute or equivalent masking mechanisms. Attackers exploiting this could harvest credentials without malware, relying solely on visual exposure. The vulnerability requires user interaction but poses risks in shared environments.
DailyCVE Form:
Platform: Devolutions Server
Version: ≤ 2024.3.13
Vulnerability: SSH password exposure
Severity: Medium
Date: 03/28/2025
What Undercode Say:
Exploitation:
- Monitor user sessions via screen recording or direct observation.
- Capture exposed passwords during SSH authentication in the web interface.
- Reuse credentials for unauthorized access to SSH-enabled systems.
Mitigation:
1. Upgrade to Devolutions Server 2024.3.14 or later.
2. Implement session monitoring to detect credential leaks.
- Enforce `autocomplete=”off”` and `type=”password”` for all credential fields.
Detection Command (Linux):
grep -r "type=\"text\" name=\"password\"" /var/www/devolutions/
Temporary Patch (JavaScript):
document.querySelectorAll('input[bash]').forEach(el => {
el.type = "password";
});
Audit Logging (SSH):
Log SSH login attempts echo "auth. /var/log/ssh_auth.log" >> /etc/rsyslog.d/ssh.conf systemctl restart rsyslog
Nginx Reverse Proxy Protection:
location /ssh-auth {
add_header X-Content-Type-Options "nosniff";
add_header X-Frame-Options "DENY";
}
Curl PoC (Check Vulnerability):
curl -s "http://target/web-ssh" | grep -q 'type="text".password' && echo "Vulnerable"
Automated Patching (Bash):
sudo sed -i 's/type="text" name="password"/type="password" name="password"/g' /opt/devolutions/web/.html
SIEM Rule (Splunk):
index=devolutions_logs sourcetype=web_ssh "password=" | stats count by src_user, src_ip
Network Isolation:
iptables -A OUTPUT -p tcp --dport 22 -j DROP Block SSH from web servers
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-2277
Extra Source Hub:
Undercode
