External risk intelligence

Citrix SD-WAN SQL Injection Vulnerability.

CVE advisoryKnown Exploit

CVE-2019-12989

Citrix SD-WAN and NetScaler SD-WAN products contain a SQL injection vulnerability. This flaw could allow an attacker to access or modify sensitive data, potentially leading to data compromise and disruption of operations.

4Halo Surface Signal

SQL Injection

Citrix Netscaler Sd Wan

10.0.0 to before 10.0.810.2.0 to before 10.2.3

External exposure likelihood

Halo Surface Signal score for CVE-2019-12989

This vulnerability affects Citrix SD-WAN and NetScaler SD-WAN appliances. These devices are typically deployed as network edge gateways, WAN optimization appliances, or remote access points, which are commonly positioned at the network perimeter and are frequently reachable from the internet to facilitate connectivity between branch offices or remote locations.

CVSS vector

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

Horizon Alert

Summary of the vulnerability and why it matters

Citrix SD-WAN and NetScaler SD-WAN products contain a SQL injection vulnerability. This flaw could allow an attacker to access or modify sensitive data stored in the system's database. The potential impact on affected organizations includes data compromise and disruption of operations.

  • Citrix SD-WAN and NetScaler SD-WAN
  • SQL injection flaw
  • Data compromise and operational impact

Attack Path

How an attacker could exploit the issue

This vulnerability allows an unauthenticated attacker to inject SQL queries into affected Citrix and NetScaler SD-WAN devices. The attacker can exploit this by sending specially crafted input to the system, leading to unauthorized access and manipulation of the underlying database. This can result in the compromise of sensitive information, the modification of system configurations, or the execution of arbitrary commands on the affected appliance.

  • Exposure over the network.
  • Attacker sends malicious SQL queries.
  • Achieves data access and control.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability allows attackers to inject malicious SQL code into affected systems. This could lead to unauthorized access, modification, or deletion of data. The potential impact on business operations is significant, warranting prompt attention.

  • Attacker skill level: High
  • Required access or conditions: Network access
  • Business risk or urgency: High

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

Organizations using Citrix SD-WAN or NetScaler SD-WAN versions prior to the indicated releases should address a critical SQL injection vulnerability. This vulnerability could allow attackers to access or modify sensitive data, potentially leading to significant business disruption and risk. Swift action is necessary to protect systems and data integrity.

  • Identify all affected Citrix SD-WAN and NetScaler SD-WAN assets.
  • Reduce exposure by isolating affected systems if possible.
  • Apply vendor updates, verify the fix, and monitor systems.

Frequently asked questions

What are Citrix SD-WAN and NetScaler SD-WAN, and what vulnerability do they have?

Citrix SD-WAN and NetScaler SD-WAN are network appliances designed for WAN optimization and edge connectivity. They are affected by a SQL injection vulnerability (CWE-89) which could allow unauthorized data access or modification.

What is CVE-2019-12989 and what type of weakness does it represent?

CVE-2019-12989 is a critical SQL injection vulnerability (CWE-89). This type of weakness allows attackers to insert malicious SQL statements into data inputs, potentially compromising the integrity and confidentiality of the associated database.

How can an attacker exploit the SQL injection flaw in Citrix SD-WAN and NetScaler SD-WAN?

An attacker can exploit this vulnerability by sending specially crafted SQL queries through network interfaces to the affected appliances. This can lead to unauthorized access to sensitive data, modification of system configurations, or even execution of arbitrary commands on the device.

What is the relevance of the Halo Surface Signal for CVE-2019-12989?

The Halo Surface Signal indicates a 'Likely' threat for CVE-2019-12989. This is because Citrix SD-WAN and NetScaler SD-WAN appliances are often deployed at network perimeters, making them accessible from the internet and increasing their exposure to potential attacks.

What steps should organizations take to address the SQL injection vulnerability?

Organizations using affected versions of Citrix SD-WAN or NetScaler SD-WAN should promptly identify all vulnerable assets. If possible, reduce their exposure by isolating them, and prioritize applying vendor-provided updates. After patching, verify the fix and implement ongoing system monitoring.

References

Sources and related resources

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

NVDPublished Modified