CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action
CWE版本: 4.18
更新日期: 2025-09-09
弱点描述
The product performs reverse DNS resolution on an IP address to obtain the hostname and make a security decision, but it does not properly ensure that the IP address is truly associated with the hostname.
常见后果
影响范围: Access Control
技术影响: Gain Privileges or Assume Identity Bypass Protection Mechanism
说明: Malicious users can fake authentication information by providing false DNS information.
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.
阶段: Implementation
描述: Perform proper forward and reverse DNS lookups to detect DNS spoofing.
检测方法
方法: Automated Static Analysis
Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)
有效性: High
观察示例
参考: CVE-2001-1488
Does not do double-reverse lookup to prevent DNS spoofing.
参考: CVE-2001-1500
Does not verify reverse-resolved hostnames in DNS.
参考: CVE-2000-1221
Authentication bypass using spoofed reverse-resolved DNS hostnames.
参考: CVE-2002-0804
Authentication bypass using spoofed reverse-resolved DNS hostnames.
参考: CVE-2001-1155
Filter does not properly check the result of a reverse DNS lookup, which could allow remote attackers to bypass intended access restrictions via DNS spoofing.
参考: CVE-2004-0892
Reverse DNS lookup used to spoof trusted content in intermediary.
参考: CVE-2003-0981
Product records the reverse DNS name of a visitor in the logs, allowing spoofing and resultant XSS.
引入模式
| 阶段 | 说明 |
|---|---|
| Architecture and Design | - |
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 |
|---|---|---|---|
| PLOVER | - | Improperly Trusted Reverse DNS | - |
| CLASP | - | Trusting self-reported DNS name | - |
| Software Fault Patterns | SFP29 | Faulty endpoint authentication | - |
关键信息
CWE ID: CWE-350
抽象级别: Variant
结构: Simple
状态: Draft