CVE-2025-2170 Overview
CVE-2025-2170 is a Server-Side Request Forgery (SSRF) vulnerability affecting the SonicWall SMA1000 Appliance Work Place interface. Under specific conditions, the flaw allows a remote unauthenticated attacker to coerce the appliance into making HTTP requests to attacker-chosen destinations. The issue is tracked under [CWE-918] and has been assigned to SonicWall advisory SNWLID-2025-0008. Because SMA1000 appliances commonly sit at network perimeters, an SSRF condition can be leveraged to probe internal services, abuse cloud metadata endpoints, or pivot toward otherwise unreachable hosts.
Critical Impact
A remote unauthenticated attacker can force the SMA1000 Work Place interface to issue outbound requests to unintended locations, enabling internal reconnaissance and potential abuse of trusted network position.
Affected Products
- SonicWall SMA1000 Appliance (hardware)
- SonicWall SMA1000 Firmware (affected versions per vendor advisory)
- SMA1000 Work Place web interface component
Discovery Timeline
- 2025-04-30 - CVE-2025-2170 published to NVD
- 2025-05-14 - Last updated in NVD database
Technical Details for CVE-2025-2170
Vulnerability Analysis
The vulnerability resides in the Work Place interface of the SMA1000 secure access appliance. The interface accepts user-controlled input that influences a server-side HTTP request without sufficient validation of the destination. An unauthenticated remote attacker can submit a crafted request that causes the appliance to issue an outbound request to an attacker-chosen URL or internal host. The CVSS scope change indicates that successful exploitation impacts resources beyond the vulnerable component, consistent with SSRF behavior crossing trust boundaries.
Root Cause
The root cause is insufficient validation and allow-listing of destination URLs processed by the Work Place interface. The application trusts attacker-supplied input when constructing server-side requests, classified under [CWE-918] Server-Side Request Forgery. No authentication is required to reach the vulnerable code path, which amplifies exposure for internet-facing SMA1000 deployments.
Attack Vector
Exploitation occurs over the network against the appliance's HTTPS Work Place interface. An attacker sends a crafted request containing a URL or host reference pointing at an internal service, loopback address, or external collaborator. The appliance then performs the request on the attacker's behalf, potentially exposing internal HTTP responses, banner information, or interacting with services that trust the appliance's network position. No user interaction or prior credentials are required.
No verified public proof-of-concept is available. See the SonicWall Security Advisory SNWLID-2025-0008 for vendor-supplied technical context.
Detection Methods for CVE-2025-2170
Indicators of Compromise
- Unexpected outbound HTTP/HTTPS connections originating from the SMA1000 appliance to internal RFC1918 addresses, loopback, or cloud metadata endpoints such as 169.254.169.254.
- Anomalous request patterns in SMA1000 Work Place access logs containing URL parameters, hostnames, or IP addresses in unexpected fields.
- Outbound DNS queries from the appliance for attacker-controlled domains or out-of-band interaction services.
Detection Strategies
- Monitor egress traffic from SMA1000 management and data interfaces and alert on connections to destinations outside an established allow-list.
- Correlate unauthenticated HTTP requests to the Work Place interface with subsequent outbound connections from the appliance within a short time window.
- Inspect web server and proxy logs for requests containing embedded URLs, IP literals, or schemes such as file://, gopher://, or http://127.0.0.1.
Monitoring Recommendations
- Enable verbose logging on the SMA1000 appliance and forward logs to a centralized SIEM for correlation with network telemetry.
- Baseline normal outbound communication from the appliance and alert on deviations, particularly connections toward internal management networks.
- Track repeated requests from a single source to the Work Place interface that include URL-shaped parameters or unusual headers.
How to Mitigate CVE-2025-2170
Immediate Actions Required
- Apply the SonicWall firmware update referenced in advisory SNWLID-2025-0008 to all affected SMA1000 appliances without delay.
- Restrict network access to the Work Place interface to known client ranges where operationally feasible.
- Review appliance egress firewall rules to deny outbound connections from the SMA1000 to internal management networks and cloud metadata endpoints.
Patch Information
SonicWall has released fixed firmware for the SMA1000 product line. Refer to the SonicWall Security Advisory SNWLID-2025-0008 for the specific fixed versions, upgrade procedures, and any prerequisite steps. Administrators should validate appliance firmware versions against the advisory and schedule upgrades through standard change management.
Workarounds
- Place the SMA1000 Work Place interface behind a web application firewall configured to block requests containing URL-shaped parameters or internal IP literals.
- Enforce strict egress filtering so the appliance can only reach destinations required for normal operation.
- Disable or limit exposure of the Work Place interface to untrusted networks until patching is complete.
# Configuration example - egress filtering for SMA1000 appliance
# Replace SMA1000_IP and ALLOWED_DEST with environment-specific values
iptables -A FORWARD -s <SMA1000_IP> -d 169.254.169.254 -j DROP
iptables -A FORWARD -s <SMA1000_IP> -d 10.0.0.0/8 -j DROP
iptables -A FORWARD -s <SMA1000_IP> -d 172.16.0.0/12 -j DROP
iptables -A FORWARD -s <SMA1000_IP> -d 192.168.0.0/16 -j DROP
iptables -A FORWARD -s <SMA1000_IP> -d <ALLOWED_DEST> -j ACCEPT
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
