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Penetration Testing of an Open-Source Software
Hrozek, Jakub ; Rogalewicz, Adam (referee) ; Smrčka, Aleš (advisor)
This thesis discusses the design and implementation of integrated penetration testing system. In the first two chapters, the reader is introduced to the topic of penetration testing. The basic techniques and classification of tests are described as well as some of the most widely used methodologies. It also discusses the need to automate the testing process. The fifth and sixth chapter discuss specification and detailed design of integrated penetration testing tool. Its implementation and the problems that had arisen during the process are the theme of chapter seven. The last part of the thesis describes practical experiments done with the tool and gives the reader some advice on securing computer networks.
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The proposal of ISMS implementation in the public administration
Štukhejl, Kamil ; Tomáš,, Krejčí (referee) ; Sedlák, Petr (advisor)
This diploma thesis focuses on the implementation of information security management system in the public administration based on ISO/IEC 27000 series of standards. The thesis contains theoretical background, introduction of the organization, risk analysis and a proposal of appropriate measures for minimization of these identified risks. In the end, an implementation plan is proposed including an economic evaluation.
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Implementation of application that demonstrates mobile application vulnerabilities
Šrůtková, Karolína ; Šilhavý, Pavel (referee) ; Martinásek, Zdeněk (advisor)
This master thesis is focused on an implementation of application for Android operating system that demonstrates mobile application vulnerabilities. Theoretical part contains security of mobile applications and its current state including a description of the biggest security risks and vulnerabilities. In addition, general development of mobile applications for Android is mentioned. In a practical part of the thesis a custom design of the application is described including vulnerabilities analysis, design of basic application blocks and selection of suitable tools for implementation. The section describing the implementation of the application describes the preparation of the environment, the structure of the created application and especially its implementation. The last part contains an example of implemented application vulnerabilities and also the result of its testing.
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Tool for SQL Injection Vulnerability Detection
Kutypa, Matouš ; Samek, Jan (referee) ; Barabas, Maroš (advisor)
The Bachelor thesis is focused on the issue of SQL injection vulnerabilities. The thesis presents commonly used procedures in the attacks against information systems and are also discussed possibilities of defense including the correct ways of input validation. The theoretical part contains the essential foundation of what should the penetration tester know, to be able to examine the inputs of application for SQL injection vulnerability. The thesis also describes analysis, design and implementation of specialized tool for Web application vulnerability detection. The implemented tool was tested and compared with other existing tools. Within the thesis has been also implemented a Web application, which demonstrates many different variants of SQL injection vulnerable inputs.
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Security of Red Hat Enterprise Linux based operating systems
Kňažeková, Nikola ; Ilgner, Petr (referee) ; Komosný, Dan (advisor)
Táto diplomová práca sa zameriava zvyšovanie bezpečnosti v operačných systémoch založených na Red Hat Enterprise Linux, na základe analyzovaných zraniteľnosti za posledných 5 rokov. V teoretickej časti sú popísané slabiny a zraniteľnosti, základné bezpečnostné mechanizmy v Linuxe, so zameraním na technológiu SELinux. Technológia SELinux je súčasťou operačných systémov Red Hat Enterprise Linux, Fedora a CentOS. Na základe analyzovaných zraniteľností bola v praktickej časti navrhnutá konfigurácia technológie SELinux. V návrhu sú popísané prvky, ktoré sa budú konfigurovať a tými sú SELinuxové booleany, SELinuxové moduly a SELinuxoví užívatelia, so zameraním na ochranu pamäte, eskalovanie privilégií, spúšťaniu kódu, úniku dat a obmedzenie procesov a užívateľov. Na základe návrhov bola vytvorená konfigurácia v konfiguračnom nástroji Ansible, ktorej cieľom je umožniť užívateľovi jednoducho a rýchlo nakonfigurovať hosťa. Okrem nej boli vytvorene ďalšie dve konfigurácie, ktoré umožnia vrátiť systém do predchádzajúceho stavu alebo uzamknúť SELinuxovú konfiguráciu. Následne sa overoval dopad konfigurácií na použiteľnosť systému a nájdené chyby boli opravené alebo nahlásené. Posledná časť overuje funkčnosť konfigurácie pred zneužitím zraniteľností.
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Black-Box Analysis of Wi-Fi Stacks Security
Venger, Adam ; Orsák, Michal (referee) ; Malinka, Kamil (advisor)
Zariadenia, na ktoré sa každodenne spoliehame, sú stále zložitejšie a využívajú zložitejšie protokoly. Jedným z týchto protokolov je Wi-Fi. S rastúcou zložitosťou sa zvyšuje aj potenciál pre implementačné chyby. Táto práca skúma Wi-Fi protokol a použitie fuzz testingu pre generovanie semi-validných vstupov, ktoré by mohli odhaliť zraniteľné miesta v zariadeniach. Špeciálna pozornosť bola venovaná testovaniu Wi-Fi v systéme ESP32 a ESP32-S2. Výsledkom práce je fuzzer vhodný pre testovanie akéhokoľvek Wi-Fi zariadenia, monitorovací nástroj špeciálne pre ESP32 a sada testovacích programov pre ESP32. Nástroj neodhalil žiadne potenciálne zraniteľnosti.
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Secure Development Framework for Web Applications
Mazura, František ; Ovšonka, Daniel (referee) ; Barabas, Maroš (advisor)
This thesis deals with the theoretical analysis of vulnerabilities in web applications, especially the most frequent vulnerabilities of OWAST TOP 10 are examined. These vulnerabilities are subsequently analyzed for the design of a web application development framework and practically implemented in this framework to prevent the vulnerabilities or, if necessary, defend itself. The main goal of the implementation is to achieve such a framework so that the programmer of the resulting web application is protected to the utmost.
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