Tên: Permission Race Condition During Resource Copy

The product, while copying or cloning a resource, does not set the resource's permissions or access control until the copy is complete, leaving the resource exposed to other spheres while the copy is taking place.

Thông tin chung

Các cách xuất hiện

Implementation

Nền tảng áp dụng

Ngôn ngữ

Tên: C (Undetermined)
Tên: Perl (Undetermined)

Hậu quả phổ biến

Phạm vi	Tác động	Khả năng xảy ra
Confidentiality Integrity	Read Application Data, Modify Application Data

Ví dụ đã quan sát

Tài liệu tham khảo	Mô tả
CVE-2002-0760	Archive extractor decompresses files with world-readable permissions, then later sets permissions to what the archive specified.
CVE-2005-2174	Product inserts a new object into database before setting the object's permissions, introducing a race condition.
CVE-2006-5214	Error file has weak permissions before a chmod is performed.
CVE-2005-2475	Archive permissions issue using hard link.
CVE-2003-0265	Database product creates files world-writable before initializing the setuid bits, leading to modification of executables.

Ghi chú ánh xạ lỗ hổng

Lý do : This is a Composite of multiple weaknesses that must all occur simultaneously.
Bình luận : While composites are supported in CWE, they have not been a focus of research. There is a chance that future research or CWE scope clarifications will change or deprecate them. Perform root-cause analysis to determine which weaknesses allow this issue to occur, and map to those weaknesses. For example, the delayed permission-setting in the resource copy might be intended functionality, but creation in a location with insecure permissions might not.

Mẫu tấn công liên quan

ID CAPEC	Tên mẫu tấn công
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.
CAPEC-27	Leveraging Race Conditions via Symbolic Links This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.

Ghi chú

Under-studied. It seems likely that this weakness could occur in any situation in which a complex or large copy operation occurs, when the resource can be made available to other spheres as soon as it is created, but before its initialization is complete.

Tài liệu tham khảo

REF-62

The Art of Software Security Assessment
Mark Dowd, John McDonald, Justin Schuh.

Gửi

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

Sửa đổi

Tên	Tổ chức	Ngày	Bình luận
CWE Content Team	MITRE	2008-09-08 +00:00	updated Applicable_Platforms, Relationships, Other_Notes, Weakness_Ordinalities
CWE Content Team	MITRE	2009-03-10 +00:00	updated Related_Attack_Patterns
CWE Content Team	MITRE	2010-09-27 +00:00	updated Relationships
CWE Content Team	MITRE	2011-06-01 +00:00	updated Common_Consequences
CWE Content Team	MITRE	2012-05-11 +00:00	updated References
CWE Content Team	MITRE	2014-06-23 +00:00	updated Modes_of_Introduction, Other_Notes
CWE Content Team	MITRE	2017-11-08 +00:00	updated Relationships
CWE Content Team	MITRE	2020-02-24 +00:00	updated Relationships
CWE Content Team	MITRE	2020-08-20 +00:00	updated Relationships
CWE Content Team	MITRE	2023-04-27 +00:00	updated Relationships
CWE Content Team	MITRE	2023-06-29 +00:00	updated Mapping_Notes

Chi tiết CWE-689

CWE-689