CWE-55 路径等价：'/./' (单点路径)

Path Equivalence: '/./' (Single Dot Directory)

结构: Simple

Abstraction: Variant

状态: Incomplete

被利用可能性: unkown

基本描述

A software system that accepts path input in the form of single dot directory exploit ('/./') without appropriate validation can lead to ambiguous path resolution and allow an attacker to traverse the file system to unintended locations or access arbitrary files.

相关缺陷

• cwe_Nature: ChildOf cwe_CWE_ID: 41 cwe_View_ID: 1000 cwe_Ordinal: Primary

• cwe_Nature: ChildOf cwe_CWE_ID: 41 cwe_View_ID: 699 cwe_Ordinal: Primary

适用平台

Language: {'cwe_Class': 'Language-Independent', 'cwe_Prevalence': 'Undetermined'}

常见的影响

范围	影响	注释
['Confidentiality', 'Integrity']	['Read Files or Directories', 'Modify Files or Directories']

可能的缓解方案

MIT-20 Implementation

策略: Input Validation

Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass whitelist validation schemes by introducing dangerous inputs after they have been checked.

分析过的案例

标识	说明	链接
CVE-2000-0004	Server allows remote attackers to read source code for executable files by inserting a . (dot) into the URL.	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-0004
CVE-2002-0304	Server allows remote attackers to read password-protected files via a /./ in the HTTP request.	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0304
BID:6042	Input Validation error	http://www.securityfocus.com/bid/6042
CVE-1999-1083	Possibly (could be a cleansing error)	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-1999-1083
CVE-2004-0815	"/./////etc" cleansed to ".///etc" then "/etc"	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0815
CVE-2002-0112	Server allows remote attackers to view password protected files via /./ in the URL.	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0112

分类映射

映射的分类名	ImNode ID	Fit	Mapped Node Name
PLOVER			/./ (single dot directory)
Software Fault Patterns	SFP16		Path Traversal

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