CWE-271 상세 정보

CWE-271

Privilege Dropping / Lowering Errors
2006-07-19
00h00 +00:00
높음
Incomplete
2026-10-28
00h00 +00:00
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알림 관리

이름: Privilege Dropping / Lowering Errors

The product does not drop privileges before passing control of a resource to an actor that does not have those privileges.

일반 정보

배경 세부 정보

취약점 도입 방식

Architecture and Design
Implementation : REALIZATION: This weakness is caused during implementation of an architectural security tactic.
Operation

적용 가능한 플랫폼

언어

클래스: Not Language-Specific (Undetermined)

일반적인 결과

범위 영향 가능성
Access ControlGain Privileges or Assume Identity

참고: If privileges are not dropped, neither are access rights of the user. Often these rights can be prevented from being dropped.
Access Control
Non-Repudiation
Gain Privileges or Assume Identity, Hide Activities

참고: If privileges are not dropped, in some cases the system may record actions as the user which is being impersonated rather than the impersonator.

관찰된 예시

참고 자료 설명

CVE-2000-1213

Program does not drop privileges after acquiring the raw socket.

CVE-2001-0559

Setuid program does not drop privileges after a parsing error occurs, then calls another program to handle the error.

CVE-2001-0787

Does not drop privileges in related groups when lowering privileges.

CVE-2002-0080

Does not drop privileges in related groups when lowering privileges.

CVE-2001-1029

Does not drop privileges before determining access to certain files.

CVE-1999-0813

Finger daemon does not drop privileges when executing programs on behalf of the user being fingered.

CVE-1999-1326

FTP server does not drop privileges if a connection is aborted during file transfer.

CVE-2000-0172

Program only uses seteuid to drop privileges.

CVE-2004-2504

Windows program running as SYSTEM does not drop privileges before executing other programs (many others like this, especially involving the Help facility).

CVE-2004-0213

Utility Manager launches winhlp32.exe while running with raised privileges, which allows local users to gain system privileges.

CVE-2004-0806

Setuid program does not drop privileges before executing program specified in an environment variable.

CVE-2004-0828

Setuid program does not drop privileges before processing file specified on command line.

CVE-2004-2070

Service on Windows does not drop privileges before using "view file" option, allowing code execution.

잠재적 완화 방법

Phases : Architecture and Design
Phases : Architecture and Design // Operation
Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Phases : Architecture and Design
Consider following the principle of separation of privilege. Require multiple conditions to be met before permitting access to a system resource.

탐지 방법

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.)

취약점 매핑 메모

근거 : This CWE entry is a Class and might have Base-level children that would be more appropriate
댓글 : Examine children of this entry to see if there is a better fit

메모

CWE-271, CWE-272, and CWE-250 are all closely related and possibly overlapping. CWE-271 is probably better suited as a category.

참고 자료

REF-44

24 Deadly Sins of Software Security
Michael Howard, David LeBlanc, John Viega.

REF-62

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

제출

이름 조직 날짜 출시일 Version
PLOVER 2006-07-19 +00:00 2006-07-19 +00:00 Draft 3

수정 사항

이름 조직 날짜 댓글
Eric Dalci Cigital 2008-07-01 +00:00 updated Time_of_Introduction
CWE Content Team MITRE 2008-09-08 +00:00 updated Description, Relationships, Taxonomy_Mappings, Weakness_Ordinalities
CWE Content Team MITRE 2008-10-14 +00:00 updated Description, Maintenance_Notes
CWE Content Team MITRE 2009-12-28 +00:00 updated Potential_Mitigations
CWE Content Team MITRE 2010-06-21 +00:00 updated Potential_Mitigations
CWE Content Team MITRE 2011-03-29 +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 Common_Consequences, Demonstrative_Examples, Observed_Examples, References, Relationships
CWE Content Team MITRE 2012-10-30 +00:00 updated Potential_Mitigations
CWE Content Team MITRE 2017-11-08 +00:00 updated Applicable_Platforms, Causal_Nature, Modes_of_Introduction, Relationships
CWE Content Team MITRE 2020-02-24 +00:00 updated Relationships
CWE Content Team MITRE 2020-12-10 +00:00 updated Potential_Mitigations
CWE Content Team MITRE 2023-01-31 +00:00 updated Description
CWE Content Team MITRE 2023-04-27 +00:00 updated Relationships
CWE Content Team MITRE 2023-06-29 +00:00 updated Mapping_Notes
CWE Content Team MITRE 2026-10-28 +00:00 updated Background_Details, Description, Detection_Factors