CVE-2024-45317 Overview
CVE-2024-45317 is a Server-Side Request Forgery (SSRF) vulnerability [CWE-918] affecting SonicWall SMA1000 appliance firmware versions 12.4.3-02676 and earlier. The flaw allows a remote, unauthenticated attacker to coerce the SMA1000 server-side application into issuing HTTP requests to unintended destinations. Attackers can leverage this behavior to probe internal network resources, interact with metadata services, or pivot through the appliance to reach systems otherwise inaccessible from the internet.
Critical Impact
Unauthenticated remote attackers can force the SMA1000 appliance to send arbitrary outbound requests, enabling internal network reconnaissance and access to restricted backend services.
Affected Products
- SonicWall SMA1000 appliance firmware version 12.4.3-02676
- All SonicWall SMA1000 firmware releases prior to 12.4.3-02676
- SMA1000 series Secure Mobile Access appliances running affected firmware
Discovery Timeline
- 2024-10-11 - CVE-2024-45317 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-45317
Vulnerability Analysis
The vulnerability resides in the SMA1000 server-side request handling logic. An unauthenticated attacker submits a crafted request containing a URL or host parameter that the application subsequently fetches without proper validation. The appliance honors the attacker-supplied destination and issues a request from its own network context.
This class of issue is classified under CWE-918: Server-Side Request Forgery. The attack requires no privileges or user interaction and is exploitable over the network. The EPSS score is 0.573% at the 42.7 percentile, indicating measurable but not widespread exploitation activity to date.
Root Cause
The SMA1000 application accepts user-controlled input that influences the destination of outbound HTTP requests. The application fails to enforce an allowlist of permitted destinations or to reject requests targeting internal IP ranges, loopback addresses, link-local metadata endpoints, and other sensitive scopes. As a result, the appliance acts as a proxy for attacker-directed traffic.
Attack Vector
An attacker delivers an HTTP request to the SMA1000 management or web interface containing a manipulated URL parameter. The vulnerable endpoint passes the value to the request-issuing component, which then connects to the supplied address. Successful exploitation impacts confidentiality (C:H) by exposing responses from internal services, while integrity and availability remain unaffected (I:N/A:N).
The vulnerability is described in prose only; no public proof-of-concept code has been verified. See the SonicWall Vulnerability Advisory SNWLID-2024-0017 for vendor-supplied technical details.
Detection Methods for CVE-2024-45317
Indicators of Compromise
- Outbound HTTP or HTTPS connections from the SMA1000 appliance to internal RFC1918 addresses, loopback ranges, or cloud metadata endpoints such as 169.254.169.254.
- Unexpected requests from the appliance to non-standard internal ports indicative of port-scanning activity.
- Web access logs on the SMA1000 containing URL parameters with embedded IP addresses or hostnames pointing to internal infrastructure.
Detection Strategies
- Inspect SMA1000 access logs for requests containing URL or host parameters that resolve to private, loopback, or link-local addresses.
- Correlate outbound connection telemetry from the appliance against an expected destination baseline and alert on deviations.
- Apply network intrusion detection signatures that flag HTTP request bodies referencing metadata service endpoints originating from the appliance.
Monitoring Recommendations
- Forward SMA1000 access and proxy logs to a centralized logging platform for retention and analysis.
- Monitor egress traffic from the appliance's management interface and alert on connections to unexpected internal subnets.
- Track firmware version inventory and generate alerts when appliances remain on builds at or below 12.4.3-02676.
How to Mitigate CVE-2024-45317
Immediate Actions Required
- Upgrade SMA1000 firmware to a release later than 12.4.3-02676 as identified in SNWLID-2024-0017.
- Restrict access to the SMA1000 management interface to trusted administrative networks only.
- Audit recent appliance logs for evidence of SSRF probing against internal addresses.
Patch Information
SonicWall has published the fixed firmware build through the SonicWall Vulnerability Advisory SNWLID-2024-0017. Customers should obtain the patched firmware from the SonicWall support portal and apply it to all affected SMA1000 appliances.
Workarounds
- Place the SMA1000 appliance behind a network firewall that blocks egress to internal subnets and metadata service IP ranges except where required.
- Limit appliance reachability from the public internet to only the services that must be externally accessible.
- Implement egress filtering on the appliance's outbound interface to deny connections to RFC1918 and link-local destinations until the firmware upgrade is completed.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
