External risk intelligence

D-Link DNR-322L Command Execution Vulnerability.

CVE advisoryKnown Exploit

CVE-2022-40799

An authenticated attacker can exploit a data integrity failure in D-Link DNR-322L devices, allowing OS command execution. This impacts device data and systems.

4Halo Surface Signal

Dlink Dnr 322l Firmware

2.60b15 and earlier

External exposure likelihood

Halo Surface Signal score for CVE-2022-40799

The product is a network video recorder (NVR) device, which is typically deployed as an edge-facing service intended for remote access to security camera feeds and management interfaces. As a gateway or appliance-based portal, it is commonly positioned to be reachable from the internet in real-world deployments to facilitate remote monitoring.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Horizon Alert

Summary of the vulnerability and why it matters

The 'Backup Config' feature in D-Link DNR-322L devices has a data integrity flaw. This vulnerability could allow an authenticated attacker to run operating system commands on the affected device. Such an occurrence could impact the confidentiality, integrity, and availability of the device's data and systems.

  • Vulnerable backup configuration
  • Flaw allows OS command execution
  • Business data and systems impacted

Attack Path

How an attacker could exploit the issue

An authenticated attacker can exploit a vulnerability in the 'Backup Config' feature of D-Link DNR-322L devices. This allows the attacker to execute operating system commands remotely. Such a compromise could lead to unauthorized control over the affected device and potentially other connected systems. This impacts the integrity and availability of the NVR system.

  • Attacker accesses the device.
  • Attacker triggers the backup config.
  • Attacker executes OS commands.

Live Threat

Current exploitation, exposure, and threat context

An authenticated attacker could exploit a data integrity failure in the 'Backup Config' feature of D-Link DNR-322L devices running firmware version 2.60B15 or earlier. This vulnerability allows for the execution of operating system-level commands. Given the product's typical deployment as a network-facing service for remote access, this presents a significant risk.

  • Attacker skill level: Low.
  • Required access: Authenticated access to the device.
  • Business risk: High urgency.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in D-Link DNR-322L devices allows an authenticated attacker to execute operating system commands. This could impact the data integrity and operational availability of affected devices. Organizations should address this risk by identifying all instances of the affected product, mitigating potential exposure, applying vendor-provided fixes, and verifying successful implementation. Ongoing monitoring is recommended to detect any related malicious activity.

  • Identify all affected devices.
  • Isolate or restrict access to these devices.
  • Apply vendor fix, verify, and monitor.

Frequently asked questions

What is the D-Link DNR-322L and its role in a security system?

The D-Link DNR-322L is a Network Video Recorder (NVR) designed to record and manage video streams from security cameras. It functions as a central point for surveillance systems, providing access to live and recorded footage.

What is CVE-2022-40799, and what specific weakness does it describe for the D-Link DNR-322L?

CVE-2022-40799 describes a Data Integrity Failure in the 'Backup Config' feature of the D-Link DNR-322L. This weakness is classified as CWE-494, indicating a download of code without proper integrity checks.

How can an attacker exploit the 'Backup Config' weakness in the D-Link DNR-322L?

An authenticated attacker can exploit this vulnerability by triggering the 'Backup Config' function. This allows them to execute operating system commands on the device, compromising its integrity and availability.

What is the significance of the D-Link DNR-322L being a network-facing service?

As a network-facing service, the D-Link DNR-322L is often accessible remotely, which increases the risk associated with vulnerabilities like CVE-2022-40799. This makes it a potential target for attackers seeking to gain unauthorized control.

What steps should be taken to address the D-Link DNR-322L vulnerability?

Organizations should identify all affected devices, restrict their access if possible, and apply any available fixes from the vendor. Continuous monitoring for malicious activity is also recommended after remediation.

References

Sources and related resources

Primary sources: NVD, CVE.org, CISA KEV.

NVDPublished Modified