CWE-925
Improper Verification of Intent by Broadcast Receiver
2013-07-17
00h00 +00:00
00h00 +00:00
특정 CWE 알림
특정 CWE의 변경 사항에 대한 정보를 받아보세요.
이름: Improper Verification of Intent by Broadcast Receiver
The Android application uses a Broadcast Receiver that receives an Intent but does not properly verify that the Intent came from an authorized source.
CWE 설명
Certain types of Intents, identified by action string, can only be broadcast by the operating system itself, not by third-party applications. However, when an application registers to receive these implicit system intents, it is also registered to receive any explicit intents. While a malicious application cannot send an implicit system intent, it can send an explicit intent to the target application, which may assume that any received intent is a valid implicit system intent and not an explicit intent from another application.
일반 정보
취약점 도입 방식
Architecture and Design적용 가능한 플랫폼
언어
클래스: Not Language-Specific (Undetermined)기술
클래스: Mobile (Undetermined)일반적인 결과
| 범위 | 영향 | 가능성 |
|---|---|---|
| Integrity | Gain Privileges or Assume Identity 참고: Another application can impersonate the operating system and cause the software to perform an unintended action. |
관찰된 예시
| 참고 자료 | 설명 |
|---|---|
CVE-2025-20972 | Mobile app store does not properly verify the intent by the broadcast receiver, allowing local attackers to write arbitrary files |
CVE-2024-10576 | Mobile device has an application that exposes a broadcast received that allows local attackers to force a factory reset |
잠재적 완화 방법
Phases : Architecture and DesignBefore acting on the Intent, check the Intent Action to make sure it matches the expected System action.
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.)효과성 : High
취약점 매핑 메모
근거 : This CWE entry is at the Variant level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.댓글 : 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.
관련 공격 패턴
| CAPEC ID | 공격 패턴 이름 |
|---|---|
| CAPEC-499 | Android Intent Intercept
An adversary, through a previously installed malicious application, intercepts messages from a trusted Android-based application in an attempt to achieve a variety of different objectives including denial of service, information disclosure, and data injection. An implicit intent sent from a trusted application can be received by any application that has declared an appropriate intent filter. If the intent is not protected by a permission that the malicious application lacks, then the attacker can gain access to the data contained within the intent. Further, the intent can be either blocked from reaching the intended destination, or modified and potentially forwarded along. |
메모
This entry will be made more comprehensive in later CWE versions.참고 자료
REF-922
Analyzing Inter-Application Communication in AndroidErika Chin, Adrienne Porter Felt, Kate Greenwood, David Wagner.
http://www.eecs.berkeley.edu/~daw/papers/intents-mobisys11.pdf
제출
| 이름 | 조직 | 날짜 | 출시일 | Version |
|---|---|---|---|---|
| CWE Content Team | MITRE | 2.5 |
수정 사항
| 이름 | 조직 | 날짜 | 댓글 |
|---|---|---|---|
| CWE Content Team | MITRE | updated Alternate_Terms, Demonstrative_Examples, Description, References | |
| CWE Content Team | MITRE | updated Demonstrative_Examples | |
| CWE Content Team | MITRE | updated Related_Attack_Patterns | |
| CWE Content Team | MITRE | updated Applicable_Platforms, Relationships | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Detection_Factors, Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Observed_Examples | |
| CWE Content Team | MITRE | updated Description |
