引入方式
Implementation
适用平台
编程语言
类: Not Language-Specific (Undetermined)
名称: C (Undetermined)
常见后果
| 影响范围 |
影响 |
可能性 |
Integrity Confidentiality Other | Modify Memory, Read Memory, Modify Application Data, Read Application Data, Alter Execution Logic | |
观察示例
| 参考资料 |
描述 |
| unsafe calls to library functions from signal handler |
| SIGCHLD signal to FTP server can cause crash under heavy load while executing non-reentrant functions like malloc/free. |
潜在缓解措施
Phases : Implementation
Use reentrant functions if available.
Phases : Implementation
Add synchronization to your non-reentrant function.
Phases : Implementation
In Java, use the ReentrantLock Class.
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.)
有效性 : High
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-29 |
Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly. |
参考资料
REF-547
Java Concurrency API
SUN.
https://docs.oracle.com/javase/1.5.0/docs/api/java/util/concurrent/locks/ReentrantLock.html REF-548
Use reentrant functions for safer signal handling
Dipak Jha, Software Engineer, IBM.
https://archive.ph/rl1XR
提交记录
| 名称 |
组织 |
日期 |
发布日期 |
Version |
| CWE Community |
|
2008-04-11 +00:00 |
2008-04-11 +00:00 |
Draft 9 |
修改记录
| 名称 |
组织 |
日期 |
备注 |
| Eric Dalci |
Cigital |
2008-07-01 +00:00 |
updated References, Potential_Mitigations, Time_of_Introduction |
| CWE Content Team |
MITRE |
2008-09-08 +00:00 |
updated Relationships, References |
| CWE Content Team |
MITRE |
2009-03-10 +00:00 |
updated Related_Attack_Patterns |
| CWE Content Team |
MITRE |
2010-09-27 +00:00 |
updated Name, Observed_Examples, Potential_Mitigations, References, Relationships |
| CWE Content Team |
MITRE |
2010-12-13 +00:00 |
updated Description, Name, Relationships |
| CWE Content Team |
MITRE |
2011-06-01 +00:00 |
updated Common_Consequences |
| CWE Content Team |
MITRE |
2012-05-11 +00:00 |
updated Relationships |
| CWE Content Team |
MITRE |
2014-07-30 +00:00 |
updated Relationships |
| CWE Content Team |
MITRE |
2017-11-08 +00:00 |
updated Observed_Examples |
| CWE Content Team |
MITRE |
2020-02-24 +00:00 |
updated Relationships |
| CWE Content Team |
MITRE |
2020-06-25 +00:00 |
updated Relationships |
| CWE Content Team |
MITRE |
2020-12-10 +00:00 |
updated Common_Consequences |
| CWE Content Team |
MITRE |
2023-01-31 +00:00 |
updated Description |
| CWE Content Team |
MITRE |
2023-04-27 +00:00 |
updated References, Relationships, Time_of_Introduction |
| CWE Content Team |
MITRE |
2023-06-29 +00:00 |
updated Mapping_Notes |
| CWE Content Team |
MITRE |
2023-10-26 +00:00 |
updated Demonstrative_Examples |
| CWE Content Team |
MITRE |
2025-04-03 +00:00 |
updated Demonstrative_Examples |
| CWE Content Team |
MITRE |
2025-12-11 +00:00 |
updated Applicable_Platforms, Detection_Factors, Weakness_Ordinalities |