External risk intelligence

Grandstream UCM6200 SQL Injection Vulnerability

CVE advisoryKnown Exploit

CVE-2020-5722

An unauthenticated SQL injection vulnerability in the Grandstream UCM6200 series' HTTP interface allows attackers to execute commands as root. This impacts affected systems by enabling unauthorized control, potentially compromising business operations and data. The risk is high due to the ease of exploitation and the p

5Halo Surface Signal

SQL Injection

Grandstream Ucm6200 Firmware

before 1.0.19.20

External exposure likelihood

Halo Surface Signal score for CVE-2020-5722

The product is an IP PBX appliance designed to provide telephony services. These devices are commonly deployed as internet-facing gateways or managed via web interfaces that are intended to be accessible for remote administration or remote phone provisioning, placing the web management interface directly on the public internet by design.

Horizon Alert

Summary of the vulnerability and why it matters

The Grandstream UCM6200 series' HTTP interface contains a flaw that allows unauthenticated attackers to inject SQL code. This weakness can enable attackers to execute system commands as a root user or insert HTML into password recovery emails. The potential impact includes unauthorized access to sensitive system functions and manipulation of user-facing communications.

  • Vulnerable HTTP interface
  • Unauthenticated SQL injection
  • System command execution or data alteration

Attack Path

How an attacker could exploit the issue

This vulnerability allows an unauthenticated attacker to exploit a SQL injection flaw in the HTTP interface of the affected device. By sending a specially crafted HTTP request, an attacker can potentially execute shell commands as a root user. This could lead to unauthorized control over the affected system.

  • External network access required.
  • Attacker sends crafted HTTP request.
  • Root command execution occurs.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability presents a significant risk due to the potential for unauthorized remote command execution. Attackers with moderate technical skill could exploit this vulnerability by sending specially crafted HTTP requests. Successful exploitation could lead to a complete compromise of affected systems, potentially impacting business operations and data integrity.

  • Likely attacker skill level: Moderate
  • Required access or conditions: Unauthenticated remote access
  • Business risk or urgency: High

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability allows an unauthenticated attacker to execute shell commands as root on affected devices. The vulnerability is present in the HTTP interface of the Grandstream UCM6200 series. Organizations should prioritize understanding their exposure to this vulnerability and taking immediate action to mitigate the risk.

  • Identify all Grandstream UCM6200 devices.
  • Isolate exposed devices from the network.
  • Apply vendor updates and validate changes.

Frequently asked questions

What is the Grandstream UCM6200 series and what is it used for?

The Grandstream UCM6200 series is a line of IP PBX appliances. These devices are commonly used by businesses to manage their phone systems, providing telephony services and often acting as gateways for external communication.

What type of weakness does CVE-2020-5722 represent and how does it affect the Grandstream UCM6200?

CVE-2020-5722 is a SQL injection vulnerability (CWE-89). This means an attacker can insert malicious SQL code into requests sent to the device's HTTP interface. This could allow them to execute commands as the root user or alter data within the system.

How can an attacker exploit this CVE-2020-5722 vulnerability?

An attacker can exploit this vulnerability by sending a specially crafted HTTP request to the device's HTTP interface. No authentication is required for this to be successful. The vulnerability is not triggered if the device is running a version after 1.0.19.20 for command execution or after 1.0.20.17 for HTML injection in password recovery emails.

Who should be concerned about CVE-2020-5722 based on its exposure?

Organizations using Grandstream UCM6200 series devices should be concerned. Given that these devices are often internet-facing for remote administration or phone provisioning, this vulnerability is very likely to be accessible from the internet.

What is the first step to address CVE-2020-5722 on Grandstream UCM6200 devices?

The immediate first step is to identify all Grandstream UCM6200 devices within your network. Once identified, it is recommended to apply any available vendor updates to mitigate the risk associated with this vulnerability.

References