CWE-65 Windows硬链接
Windows Hard Link
结构: Simple
Abstraction: Variant
状态: Incomplete
被利用可能性: unkown
基本描述
The software, when opening a file or directory, does not sufficiently handle when the name is associated with a hard link to a target that is outside of the intended control sphere. This could allow an attacker to cause the software to operate on unauthorized files.
扩展描述
Failure for a system to check for hard links can result in vulnerability to different types of attacks. For example, an attacker can escalate their privileges if a file used by a privileged program is replaced with a hard link to a sensitive file (e.g. AUTOEXEC.BAT). When the process opens the file, the attacker can assume the privileges of that process, or prevent the program from accurately processing data.
相关缺陷
-
cwe_Nature: ChildOf cwe_CWE_ID: 59 cwe_View_ID: 1000 cwe_Ordinal: Primary
-
cwe_Nature: ChildOf cwe_CWE_ID: 59 cwe_View_ID: 699 cwe_Ordinal: Primary
适用平台
Language: {'cwe_Class': 'Language-Independent', 'cwe_Prevalence': 'Undetermined'}
Operating_System: {'cwe_Class': 'Windows', '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-48.1 Architecture and Design
策略: Separation of Privilege
Follow the principle of least privilege when assigning access rights to entities in a software system. Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
分析过的案例
| 标识 | 说明 | 链接 |
|---|---|---|
| CVE-2002-0725 | File system allows local attackers to hide file usage activities via a hard link to the target file, which causes the link to be recorded in the audit trail instead of the target file. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0725 |
| CVE-2003-0844 | Web server plugin allows local users to overwrite arbitrary files via a symlink attack on predictable temporary filenames. | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2003-0844 |
Notes
分类映射
| 映射的分类名 | ImNode ID | Fit | Mapped Node Name |
|---|---|---|---|
| PLOVER | Windows hard link | ||
| CERT C Secure Coding | FIO05-C | Identify files using multiple file attributes | |
| Software Fault Patterns | SFP18 | Link in resource name resolution |