CWE-363
Race Condition Enabling Link Following
2006-07-19
00h00 +00:00
00h00 +00:00
指定 CWE 通知
随时了解指定 CWE 的变更。
名称: Race Condition Enabling Link Following
The product checks the status of a file or directory before accessing it, which produces a race condition in which the file can be replaced with a link before the access is performed, causing the product to access the wrong file.
基本信息
引入方式
Implementation : Developers might assume that there is a very narrow time window between the time of check and time of use, but there is still a race condition.Implementation
适用平台
编程语言
类： Not Language-Specific (Undetermined)常见后果
| 影响范围 | 影响 | 可能性 |
|---|---|---|
| Confidentiality Integrity | Read Files or Directories, Modify Files or Directories 注意： An attacker could cause the product to slow down (e.g. with memory consumption), causing the time window to become larger. Alternately, in some situations, the attacker could win the race by performing a large number of attacks. |
检测方法
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.)漏洞映射说明
依据 : This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.备注 : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.
相关攻击模式
| CAPEC ID | 攻击模式名称 |
|---|---|
| CAPEC-26 | Leveraging Race Conditions
The adversary targets a race condition occurring when multiple processes access and manipulate the same resource concurrently, and the outcome of the execution depends on the particular order in which the access takes place. The adversary can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance, a race condition can occur while accessing a file: the adversary can trick the system by replacing the original file with their version and cause the system to read the malicious file. |
备注
This is already covered by the "Link Following" weakness (CWE-59). It is included here because so many people associate race conditions with link problems; however, not all link following issues involve race conditions.参考资料
REF-62
The Art of Software Security AssessmentMark Dowd, John McDonald, Justin Schuh.
提交记录
| 名称 | 组织 | 日期 | 发布日期 | Version |
|---|---|---|---|---|
| PLOVER | Draft 3 |
修改记录
| 名称 | 组织 | 日期 | 备注 |
|---|---|---|---|
| Eric Dalci | Cigital | updated Time_of_Introduction | |
| CWE Content Team | MITRE | updated Relationships, Other_Notes, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Description, Other_Notes, Relationships | |
| CWE Content Team | MITRE | updated Relationships, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Other_Notes, Relationship_Notes | |
| CWE Content Team | MITRE | updated Demonstrative_Examples | |
| CWE Content Team | MITRE | updated Common_Consequences | |
| CWE Content Team | MITRE | updated Demonstrative_Examples, References, Relationships | |
| CWE Content Team | MITRE | updated Relationships, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Applicable_Platforms, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Description | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Detection_Factors, Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Common_Consequences, Description, Modes_of_Introduction, Time_of_Introduction |
