Tên: 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.

Mô tả CWE

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.

Thông tin chung

Các cách xuất hiện

Architecture and Design

Nền tảng áp dụng

Ngôn ngữ

Lớp: Not Language-Specific (Undetermined)

Công nghệ

Lớp: Mobile (Undetermined)

Hậu quả phổ biến

Phạm vi	Tác động	Khả năng xảy ra
Integrity	Gain Privileges or Assume Identity Ghi chú: Another application can impersonate the operating system and cause the software to perform an unintended action.

Ví dụ đã quan sát

Tài liệu tham khảo	Mô tả
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

Các biện pháp giảm thiểu tiềm năng

Phases : Architecture and Design
Before acting on the Intent, check the Intent Action to make sure it matches the expected System action.

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 Variant 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-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.

Ghi chú

This entry will be made more comprehensive in later CWE versions.

Tài liệu tham khảo

REF-922

Analyzing Inter-Application Communication in Android
Erika Chin, Adrienne Porter Felt, Kate Greenwood, David Wagner.
http://www.eecs.berkeley.edu/~daw/papers/intents-mobisys11.pdf

Gửi

Tên	Tổ chức	Ngày	Ngày phát hành	Version
CWE Content Team	MITRE	2013-06-24 +00:00	2013-07-17 +00:00	2.5

Sửa đổi

Tên	Tổ chức	Ngày	Bình luận
CWE Content Team	MITRE	2014-02-18 +00:00	updated Alternate_Terms, Demonstrative_Examples, Description, References
CWE Content Team	MITRE	2017-11-08 +00:00	updated Demonstrative_Examples
CWE Content Team	MITRE	2019-01-03 +00:00	updated Related_Attack_Patterns
CWE Content Team	MITRE	2020-02-24 +00:00	updated Applicable_Platforms, Relationships
CWE Content Team	MITRE	2022-10-13 +00:00	updated Relationships
CWE Content Team	MITRE	2023-04-27 +00:00	updated Detection_Factors, Relationships
CWE Content Team	MITRE	2023-06-29 +00:00	updated Mapping_Notes
CWE Content Team	MITRE	2025-12-11 +00:00	updated Weakness_Ordinalities
CWE Content Team	MITRE	2026-04-30 +00:00	updated Observed_Examples
CWE Content Team	MITRE	2026-10-28 +00:00	updated Description

Chi tiết CWE-925

CWE-925