Tên: Use of a Non-reentrant Function in a Concurrent Context

The product calls a non-reentrant function in a concurrent context in which a competing code sequence (e.g. thread or signal handler) may have an opportunity to call the same function or otherwise influence its state.

Thông tin chung

Các cách xuất hiện

Implementation

Nền tảng áp dụng

Ngôn ngữ

Lớp: Not Language-Specific (Undetermined)
Tên: C (Undetermined)

Hậu quả phổ biến

Phạm vi	Tác động	Khả năng xảy ra
Integrity Confidentiality Other	Modify Memory, Read Memory, Modify Application Data, Read Application Data, Alter Execution Logic

Ví dụ đã quan sát

Tài liệu tham khảo	Mô tả
CVE-2001-1349	unsafe calls to library functions from signal handler
CVE-2004-2259	SIGCHLD signal to FTP server can cause crash under heavy load while executing non-reentrant functions like malloc/free.

Các biện pháp giảm thiểu tiềm năng

Phases : Implementation
Use reentrant functions if available.
Phases : Implementation
Add synchronization to your non-reentrant function.
Phases : Implementation
In Java, use the ReentrantLock Class.

Phương pháp phát hiện

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.)
Hiệu quả : High

Ghi chú ánh xạ lỗ hổng

Lý do : 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.
Bình luận : 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.

Mẫu tấn công liên quan

ID CAPEC	Tên mẫu tấn công
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.

Tài liệu tham khảo

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

Gửi

Tên	Tổ chức	Ngày	Ngày phát hành	Version
CWE Community		2008-04-11 +00:00	2008-04-11 +00:00	Draft 9

Sửa đổi

Tên	Tổ chức	Ngày	Bình luận
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

Chi tiết CWE-663

CWE-663