CVE-2025-10453 Overview
CVE-2025-10453 is a Server-Side Request Forgery (SSRF) vulnerability in O'View MapServer developed by PilotGaea Technologies. Unauthenticated remote attackers can send crafted requests through the application to reach hosts and services inside the target's internal network. The flaw is tracked under CWE-918: Server-Side Request Forgery and requires no privileges or user interaction. Taiwan's TW-CERT published coordinated advisories describing the issue and affected product line. The vulnerability supports internal reconnaissance, which is frequently used as a precursor to lateral movement or exploitation of otherwise unreachable internal services.
Critical Impact
Unauthenticated remote attackers can abuse the map server to probe internal network resources not exposed to the internet.
Affected Products
- PilotGaea Technologies O'View MapServer
- Deployments exposing the MapServer HTTP interface to untrusted networks
- Environments where O'View MapServer has network reachability to internal services
Discovery Timeline
- 2025-09-15 - CVE-2025-10453 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-10453
Vulnerability Analysis
The vulnerability resides in request handling logic within O'View MapServer that fetches remote resources on behalf of the client. The server accepts a user-controlled URL or host parameter and issues an outbound HTTP request without validating the destination. Attackers can direct these requests to internal IP ranges, loopback addresses, or cloud metadata endpoints. The response, error behavior, or timing can then be used to enumerate reachable services and open ports inside the network perimeter.
SSRF impact in this case is scoped to confidentiality of network topology and internal service exposure. The CVSS vector reflects low confidentiality impact with no integrity or availability effect on the vulnerable component itself. However, discovered internal endpoints frequently expose additional, chainable weaknesses.
Root Cause
The root cause is missing validation of destination URLs supplied to server-side fetch functionality. The application does not enforce an allowlist of permitted hosts, does not block private address ranges (RFC1918, 127.0.0.0/8, 169.254.0.0/16), and does not require authentication before performing the outbound request. This aligns with the canonical [CWE-918] pattern.
Attack Vector
Exploitation occurs over the network against the MapServer HTTP interface. An unauthenticated attacker submits a request containing a target URL that points to an internal resource. The MapServer resolves the host and issues the request from its own network position, effectively acting as a proxy into the internal network. See the TW-CERT Security Advisory for vendor coordination details. Technical details on the exact request format are not publicly disclosed in the advisories.
Detection Methods for CVE-2025-10453
Indicators of Compromise
- Outbound HTTP requests originating from the O'View MapServer host to internal IP ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) that do not match normal application behavior
- Requests from MapServer to loopback (127.0.0.1) or cloud metadata endpoints (169.254.169.254)
- Unusual spikes in outbound request volume or unique destination hosts contacted by the MapServer process
Detection Strategies
- Inspect MapServer access logs for URL parameters containing internal IPs, hostnames, or non-HTTP schemes such as file://, gopher://, or dict://
- Correlate MapServer process network telemetry with expected upstream tile or GIS data sources; flag anomalous destinations
- Deploy egress filtering at the network layer and alert on any denied outbound connection sourced from the MapServer host
Monitoring Recommendations
- Monitor for scan-like patterns from the MapServer host, including sequential port probes or systematic IP enumeration
- Alert on authentication failures on internal services immediately following MapServer outbound activity
- Baseline normal MapServer outbound destinations and generate alerts on deviations
How to Mitigate CVE-2025-10453
Immediate Actions Required
- Restrict network access to the O'View MapServer administrative and HTTP interfaces to trusted clients only
- Apply the vendor patch or update per the TW-CERT Security Advisory as soon as it is available
- Enforce egress filtering from the MapServer host to prevent access to internal address ranges and cloud metadata services
Patch Information
Refer to the TW-CERT Security Advisory and the TW-CERT Security Alert for vendor remediation guidance. Contact PilotGaea Technologies for the fixed version of O'View MapServer applicable to your deployment.
Workarounds
- Place the MapServer behind a reverse proxy that strips or validates URL parameters used for remote resource fetching
- Implement host-level firewall rules blocking outbound connections from the MapServer process to RFC1918 ranges, 127.0.0.0/8, and 169.254.169.254
- Deploy a forward proxy with a strict allowlist of legitimate upstream data providers and route all MapServer outbound traffic through it
# Example iptables egress restriction for MapServer host
iptables -A OUTPUT -m owner --uid-owner mapserver -d 127.0.0.0/8 -j REJECT
iptables -A OUTPUT -m owner --uid-owner mapserver -d 10.0.0.0/8 -j REJECT
iptables -A OUTPUT -m owner --uid-owner mapserver -d 172.16.0.0/12 -j REJECT
iptables -A OUTPUT -m owner --uid-owner mapserver -d 192.168.0.0/16 -j REJECT
iptables -A OUTPUT -m owner --uid-owner mapserver -d 169.254.169.254 -j REJECT
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