CWE-925
Improper Verification of Intent by Broadcast Receiver
2013-07-17
00h00 +00:00
00h00 +00:00
指定 CWE 通知
掌握特定 CWE 的任何變更。
名稱: 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 描述
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.
一般資訊
引入方式
Architecture and Design適用平台
程式語言
類別： Not Language-Specific (Undetermined)技術
類別： Mobile (Undetermined)常見後果
| 範圍 | 影響 | 可能性 |
|---|---|---|
| Integrity | Gain Privileges or Assume Identity 注意：Another application can impersonate the operating system and cause the software to perform an unintended action. |
觀察到的案例
| 參考資料 | 描述 |
|---|---|
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 |
潛在緩解措施
Phases : Architecture and DesignBefore acting on the Intent, check the Intent Action to make sure it matches the expected System action.
偵測方法
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.)有效性 : High
漏洞對應備注
理由說明 : 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.備註 : 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.
相關攻擊模式
| CAPEC ID | 攻擊模式名稱 |
|---|---|
| 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. |
備注
This entry will be made more comprehensive in later CWE versions.參考資料
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
提交
| 名稱 | 機構 | 日期 | 發布日期 | Version |
|---|---|---|---|---|
| CWE Content Team | MITRE | 2.5 |
修改記錄
| 名稱 | 機構 | 日期 | 備註 |
|---|---|---|---|
| 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 |
