Android系統(tǒng)漏洞檢測和利用方法的研究與實現(xiàn)
[Abstract]:The Android operating system is widely used because of its open source characteristics. However, because of the flaw in the system, the lawless elements take advantage of the system vulnerability to enhance their application rights and illegally collect or disclose user information without the user's knowledge. Events that even take full control of the user's equipment occur from time to time. For example, spamming phone calls and text messages caused by information leaks harass people's normal lives, and damage to property caused by telecom fraud. Therefore, the security of the Android operating system has received great attention. It is of great significance to study the detection and utilization of Android system vulnerabilities, whether in commercial value or in the protection of personal information and property. By analyzing the security mechanism of Android application layer, this paper summarizes the security development and testing methods of Android application, and studies the security mechanism and vulnerability buffer mechanism of Android system. This paper summarizes the methods of vulnerability exploitation between version 4.1.2-6.0.1 of Android, and compiles the code of vulnerability exploitation. In addition, aiming at the lack of application software for vulnerability detection of Android system in the current market, Two vulnerability detection methods are proposed, which are vulnerability detection method based on vulnerability characteristics and binary vulnerability detection method based on vulnerability number. Based on these two methods, a vulnerability detection tool, VTS.VTS, is designed and implemented to effectively solve the problems of low efficiency, heavy workload and poor stability when using traditional PoC and other scripting methods to verify vulnerability existence. By testing the vulnerability exploitation code of 19 models with system version between 4.1.2-6.0.1, it is found that CVE-2014-7911CVE-2014-4322CVE-2015-3636 CVE-2015-1805 can be used by all root models. However, when only using a single vulnerability code for power raising testing, due to the existence of hard coding in the vulnerability exploitation code, a large number of adaptations are needed in order to achieve better results. In addition, 93 vulnerability detection codes were added to the vulnerability detection tool VTS, and tested on several models of Google official and domestic manufacturers. The test results show that the VTS detection speed is fast and the operation is stable and smooth. The error rate of the test results can be controlled within 10% by making specific code modification. It meets the requirements of domestic manufacturers to check the vulnerability level of the issued system regularly and users are familiar with the security of their own equipment.
【學位授予單位】:西安科技大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TP316;TP309
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