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Improving Memory Management Security for C and C++
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Author(s): Yves Younan (Katholieke Universiteit Leuven, Belgium), Wouter Joosen (Katholieke Universiteit Leuven, Belgium), Frank Piessens (Katholieke Universiteit Leuven, Belgium)and Hans Van den Eynden (Katholieke Universiteit Leuven, Belgium)
Copyright: 2012
Pages: 27
Source title:
Security-Aware Systems Applications and Software Development Methods
Source Author(s)/Editor(s): Khaled M. Khan (Qatar University, Qatar)
DOI: 10.4018/978-1-4666-1580-9.ch011
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Abstract
Memory managers are an important part of modern language and are used to dynamically allocate memory. Many managers exist; however, two major types can be identified: manual memory allocators and garbage collectors. In the case of manual memory allocators, the programmer must manually release memory back to the system when it is no longer needed. Problems can occur when a programmer forgets to release it, releases it twice or uses freed memory. These problems are solved in garbage collectors. However, both manual memory allocators and garbage collectors store management information. This paper describes several vulnerabilities for C and C++ and how these could be remedied by modifying the management information of a representative manual memory allocator and garbage collector. Additionally, the authors present an approach that, when applied to memory managers, will protect against these attack vectors.
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