Android数据库攻击重见天日

Behnaz Hassanshahi, R. Yap
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引用次数: 8

摘要

许多Android应用程序(应用程序)使用数据库来管理敏感数据,因此,数据库的安全性是一个问题。在本文中,我们系统地研究了针对良性Android应用程序中数据库的攻击。除了研究从内容提供者访问的数据库漏洞外,我们还定义和研究了一类新的数据库漏洞。我们提出了一个分析框架,通过概念验证漏洞来发现此类漏洞。我们的分析结合了静态数据流分析、符号执行以及处理复杂对象(如uri)和动态测试的模型。我们对流行的Android应用程序进行了分析,成功发现了许多数据库漏洞。令人惊讶的是,我们的分析器发现了利用先前报告和修复的漏洞的新方法。最后,我们提出了一种细粒度的保护机制,扩展清单以防止数据库攻击。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Android Database Attacks Revisited
Many Android apps (applications) employ databases for managing sensitive data, thus, security of their databases is a concern. In this paper, we systematically study attacks targeting databases in benign Android apps. In addition to studying database vulnerabilities accessed from content providers, we define and study a new class of database vulnerabilities. We propose an analysis framework to find such vulnerabilities with a proof-of-concept exploit. Our analysis combines static dataflow analysis, symbolic execution with models for handling complex objects such as URIs and dynamic testing. We evaluate our analysis on popular Android apps, successfully finding many database vulnerabilities. Surprisingly, our analyzer finds new ways to exploit previously reported and fixed vulnerabilities. Finally, we propose a fine-grained protection mechanism extending the manifest to protect against database attacks.
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