External risk intelligence

QNAP NAS Command Injection Vulnerability

CVE advisoryKnown Exploit

CVE-2020-2509

A command injection vulnerability affects QNAP QTS and QuTS hero systems, potentially allowing attackers to execute arbitrary commands. This poses a business risk by enabling unauthorized actions on compromised applications. Organizations should identify and mitigate exposure, and apply vendor-provided fixes.

5Halo Surface Signal

OS Command Injection

Qnap Qts

before 4.2.64.3.5 to before 4.3.64.4.0 to before 4.5.14.2.64.3.3.01744.3.3.08684.3.3.09984.3.3.10514.3.3.10984.3.3.11614.3.3.12524.3.3.13154.3.3.13864.3.3.14324.3.4.0358...

External exposure likelihood

Halo Surface Signal score for CVE-2020-2509

This vulnerability affects QNAP NAS operating systems. QNAP devices are commonly deployed as internet-facing network storage and management gateways. These devices are frequently exposed to the public internet by design to facilitate remote file access, cloud synchronization, and remote administration, placing the management interface directly within reach of internet-based attackers.

Horizon Alert

Summary of the vulnerability and why it matters

A command injection vulnerability has been identified in QNAP's QTS and QuTS hero operating systems. This flaw could allow unauthorized individuals to execute arbitrary commands on a compromised application. The potential impact includes unauthorized system access and control.

  • Vulnerable QNAP operating systems
  • Allows arbitrary command execution
  • Potential for unauthorized system control

Attack Path

How an attacker could exploit the issue

A command injection vulnerability affecting QNAP operating systems allows attackers to execute arbitrary commands. This impacts the security and integrity of affected applications and systems. Successful exploitation could lead to unauthorized command execution, potentially compromising the entire system.

  • Exposure condition: Network access to the affected application.
  • Attacker starting point: Unauthenticated.
  • Trigger and result: Attacker injects commands, gaining system control.

Live Threat

Current exploitation, exposure, and threat context

A critical command injection vulnerability in QNAP's QTS and QuTS hero operating systems allows attackers to execute arbitrary commands. This could enable unauthorized access and control over affected systems. Organizations should treat this as a high-priority security concern due to the potential for significant business disruption.

  • Likely attacker skill level: Low
  • Required access or conditions: Network accessible
  • Business risk or urgency: High

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

A command injection vulnerability impacts QNAP QTS and QuTS hero systems, potentially allowing attackers to execute arbitrary commands. This poses a significant business risk by enabling unauthorized actions on compromised applications. Organizations should prioritize actions to identify and mitigate exposure, apply vendor-provided fixes, and confirm successful remediation.

  • Find affected QNAP assets.
  • Reduce exposure or isolate risk.
  • Fix, verify, and monitor.

Frequently asked questions

What are the QNAP operating systems affected by the CVE-2020-2509 command injection vulnerability?

The command injection vulnerability, CVE-2020-2509, affects QNAP's QTS and QuTS hero operating systems. Specific affected versions include QTS versions prior to 4.2.6, versions between 4.3.5 and 4.3.6, and versions between 4.4.0 and 4.5.1. For QuTS hero, the affected version is prior to h4.5.1.1491.

How does the CVE-2020-2509 vulnerability allow attackers to compromise QNAP systems?

This vulnerability is a command injection flaw (CWE-77, CWE-78), meaning attackers can inject and execute arbitrary commands. When exploited, it allows unauthorized individuals to run commands on the compromised application, potentially leading to unauthorized system access and control.

What is the attack vector for CVE-2020-2509, and what conditions are needed for exploitation?

The attack vector is the network (AV:N), requiring no privileges (PR:N) and no user interaction (UI:N). This means attackers can exploit this vulnerability remotely over the network without needing any prior access or credentials to the QNAP device.

Why is CVE-2020-2509 considered a significant threat, and what is the urgency for QNAP users?

This vulnerability is rated CRITICAL with a base score of 9.8 due to its potential for complete system compromise. QNAP devices are often internet-facing for remote access, making them prime targets. The CISA has also listed it on the Known Exploited Vulnerabilities Catalog, indicating active exploitation, and it has a high EPSS score, signifying a very likely chance of exploitation.

What steps should organizations take to mitigate the risk posed by CVE-2020-2509?

Organizations should immediately identify all affected QNAP assets running vulnerable versions of QTS or QuTS hero. It is crucial to apply vendor-supplied security updates as soon as possible. After patching, verify that the updates were successful and continue to monitor systems for any signs of compromise.

References