CVE-2023-46748 is a SQL injection vulnerability in F5 BIG-IP Configuration Utility. CISA added it to the Known Exploited Vulnerabilities catalogue on 31 October 2023, which means attackers have used it in real attacks. This vulnerability can be used in conjunction with CVE-2023-46747.
Why this vulnerability matters in BIG-IP
SQL injection in a configuration utility is dangerous because it can turn a trusted administrative interface into a path for unauthorized database access, configuration tampering, and broader control-plane compromise. On systems that sit in front of critical applications, the exposed surface is not just data, it can include settings, session material, and the trust relationships that the appliance protects.
For this class of flaw, the core issue is not the SQL syntax error itself, but the ability to influence backend queries through an interface that administrators assume is privileged and well defended. When that assumption fails, attackers may be able to move from a web request to state-changing actions inside the management plane, which makes the vulnerability materially more severe than a typical application bug.
How organisations assess exposure
Exposure checks should begin with a precise inventory of BIG-IP appliances, the services they expose, and whether the Configuration Utility is reachable from untrusted networks. From there, teams should compare deployed versions and advisories against the vendor’s guidance and the KEV listing, rather than relying on general vulnerability scanners alone.
The most important question is whether the vulnerable management interface is internet-facing, reachable through VPN or jump hosts, or exposed only to tightly controlled admin networks. If the interface is broadly reachable, the practical risk rises quickly because exploitation can happen before defenders notice unusual administrative traffic.
For authoritative version and patch guidance, use the vendor advisory together with the NIST National Vulnerability Database and the CVE Program record for this identifier.
Remediation and compensating controls
Remediation priority should be high when a management-plane SQL injection is present, because the blast radius can include administrative access, appliance settings, and downstream traffic control. If patching must be delayed, reduce exposure by restricting management access to dedicated admin networks, removing unnecessary reachability, and tightening authentication and session controls around the utility.
Compensating controls should assume the interface may already be probed or abused, so network containment and log review matter as much as patch deployment. Organisations should also treat configuration backups, stored credentials, and adjacent administrative integrations as sensitive assets that may need review if the appliance was reachable during the exposure window.
The attack pattern is closely related to other web application injection issues, so a useful reference point is the Web Application Attacks Guide, which places SQL injection in the broader context of exploitation techniques and defensive patterns.
Detection and post-exploitation review
Detection should focus on unusual requests to the Configuration Utility, unexpected database errors, anomalous administrative sessions, and any sign that appliance settings changed without a corresponding change record. Because CISA has listed this CVE in KEV, defenders should treat exploitation as a real-world possibility rather than a theoretical one.
After patching, review the appliance for signs of compromise, including unexpected admin accounts, altered configuration objects, suspicious logins, and changes to connected systems that might have been made through the BIG-IP control plane. If the appliance handled privileged secrets or session material, rotate those credentials and invalidate active sessions where feasible.
For broader vulnerability handling and verification discipline, the Vulnerability Management Guide is a useful operational companion, and Database Security Guide reinforces why backend data paths and stored credentials deserve special attention.
Risk and Threat Considerations
This kind of flaw is especially risky because it sits in an administrative surface that often has high trust and broad reach. If exploited, attackers may not need to defeat user-facing defences at all, they can target the management plane directly and use that position to alter configuration, harvest secrets, or set up persistence.
Failure mechanism: SQL injection lets an attacker influence backend queries through a trusted interface, which can expose data or permit unintended administrative actions if the application passes unsanitised input into the database layer.
Impact: The result can be compromise of appliance configuration, disclosure of sensitive backend data, or a foothold that supports follow-on access to connected services and sessions.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP ASVS, CIS Controls v8, NIST SP 800-53 Rev 5 and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP ASVS | V4 — API and Web Service | SQL injection in the utility is a web service input-handling flaw. |
| Recommendation — Apply V4 controls to validate inputs and block injection in management interfaces. | ||
| CIS Controls v8 | CIS-16 — Application Software Security | This is an application-layer vulnerability in a privileged management utility. |
| Recommendation — Harden and test administrative applications before exposure to production networks. | ||
| NIST SP 800-53 Rev 5 | SI-10 — Information Input Validation | SQL injection is a classic input-validation failure in a management application. |
| AC-6 — Least Privilege | A compromised management utility can overreach if privileges are excessive. | |
| Recommendation — Enforce SI-10 to validate inputs before they reach database queries. Limit administrative and service privileges to the minimum required for operation. | ||
| NIST CSF 2.0 | PR.AA-05 — Authenticator Management | Exploitation of a management plane may require rotation of exposed credentials and sessions. |
| Recommendation — Rotate exposed credentials and invalidate sessions after confirmed exploitation. | ||