CWE-918 服务端请求伪造（SSRF）
Server-Side Request Forgery (SSRF)
结构: Simple
Abstraction: Base
状态: Incomplete
被利用可能性: unkown
基本描述
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.
扩展描述
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.
相关缺陷
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cwe_Nature: ChildOf cwe_CWE_ID: 441 cwe_View_ID: 1000 cwe_Ordinal: Primary
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cwe_Nature: ChildOf cwe_CWE_ID: 610 cwe_View_ID: 1003 cwe_Ordinal: Primary
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cwe_Nature: ChildOf cwe_CWE_ID: 441 cwe_View_ID: 699 cwe_Ordinal: Primary
适用平台
Language: {'cwe_Class': 'Language-Independent', 'cwe_Prevalence': 'Undetermined'}
Paradigm: {'cwe_Name': 'Web Based', 'cwe_Prevalence': 'Undetermined'}
Technology: {'cwe_Name': 'Web Server', 'cwe_Prevalence': 'Undetermined'}
常见的影响
| 范围 | 影响 | 注释 |
|---|---|---|
| Confidentiality | Read Application Data | |
| Integrity | Execute Unauthorized Code or Commands |
分析过的案例
| 标识 | 说明 | 链接 |
|---|---|---|
| CVE-2002-1484 | Web server allows attackers to request a URL from another server, including other ports, which allows proxied scanning. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-1484 |
| CVE-2004-2061 | CGI script accepts and retrieves incoming URLs. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-2061 |
| CVE-2010-1637 | Web-based mail program allows internal network scanning using a modified POP3 port number. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-1637 |
| CVE-2009-0037 | URL-downloading library automatically follows redirects to file:// and scp:// URLs | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0037 |
Notes
引用
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REF-913 SSRF vs. Business-critical applications: XXE tunneling in SAP
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REF-914 SSRF vs. Business-critical Applications. Part 1: XXE Tunnelling in SAP NetWeaver
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REF-918 SSRF attacks and sockets: smorgasbord of vulnerabilities
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REF-920 Web Portals: Gateway To Information, Or A Hole In Our Perimeter Defenses
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