CWE-918: Server-Side Request Forgery (SSRF)

ID CWE-918

Abstraction Base

Structure Simple

Status Incomplete

Number of CVEs 1210

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

By providing URLs to unexpected hosts or ports, attackers can make it appear that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://), or use other protocols such as gopher:// or tftp://, which may provide greater control over the contents of requests.

Modes of Introduction

Phase	Note
Architecture and Design
Implementation

Applicable Platforms

Type	Class	Name	Prevalence
Language	Not Language-Specific
Technology		Web Server

Relationships

View			Weakness
# ID	View	Status	# ID	Name	Abstraction	Structure	Status
CWE-1000	Research Concepts	Draft	CWE-441	Unintended Proxy or Intermediary ('Confused Deputy')	Class	Simple	Draft
CWE-1003	Weaknesses for Simplified Mapping of Published Vulnerabilities	Incomplete	CWE-610	Externally Controlled Reference to a Resource in Another Sphere	Class	Simple	Draft

Common Attack Pattern Enumeration and Classification (CAPEC)

The Common Attack Pattern Enumeration and Classification (CAPEC™) effort provides a publicly available catalog of common attack patterns that helps users understand how adversaries exploit weaknesses in applications and other cyber-enabled capabilities.

CAPEC at Mitre.org

# ID	Name	Weaknesses
CAPEC-664	Server Side Request Forgery	CWE-918

CVEs Published

Based on CVE published date

CVSS Severity

CVSS Severity - By Year

CVSS Base Score

# CVE	Description	CVSS	EPSS	EPSS Trend (30 days)	Affected Products	Weaknesses	Security Advisories	Exploits	PoC	Pubblication Date	Modification Date
# CVE	Description	CVSS	EPSS	EPSS Trend (30 days)	Affected Products	Weaknesses	Security Advisories	PoC	Pubblication Date	Modification Date