CWE-291: Reliance on IP Address for Authentication
CWE版本: 4.18
更新日期: 2025-09-09
弱点描述
The product uses an IP address for authentication.
扩展描述
IP addresses can be easily spoofed. Attackers can forge the source IP address of the packets they send, but response packets will return to the forged IP address. To see the response packets, the attacker has to sniff the traffic between the victim machine and the forged IP address. In order to accomplish the required sniffing, attackers typically attempt to locate themselves on the same subnet as the victim machine. Attackers may be able to circumvent this requirement by using source routing, but source routing is disabled across much of the Internet today. In summary, IP address verification can be a useful part of an authentication scheme, but it should not be the single factor required for authentication.
常见后果
影响范围: Access Control Non-Repudiation
技术影响: Hide Activities Gain Privileges or Assume Identity
说明: Malicious users can fake authentication information, impersonating any IP address.
潜在缓解措施
阶段: Architecture and Design
描述: Use other means of identity verification that cannot be simply spoofed. Possibilities include a username/password or certificate.
观察示例
参考: CVE-2022-30319
S-bus functionality in a home automation product performs access control using an IP allowlist, which can be bypassed by a forged IP address.
引入模式
| 阶段 | 说明 |
|---|---|
| Architecture and Design | COMMISSION: This weakness refers to an incorrect design related to an architectural security tactic. |
适用平台
编程语言
分类映射
| 分类名称 | 条目ID | 条目名称 | 映射适配度 |
|---|---|---|---|
| CLASP | - | Trusting self-reported IP address | - |