Finally, during the call to gst_memory_unmap, the overwritten memory may cause a function pointer hijack, as the mem->allocator->mem_unmap_full function is called with a corrupted pointer. This function pointer
Some calls to thePyMem_*API uses an arithmetic operation on the size, which could make the requested length overflow. The checks in the corresponding functions would not be relevant since the inputs already overflowed. CPython versions tested on: CPython main branch Operating systems tested on: ...
The RESERVE_QUEUE_OVERFLOW bug check has a value of 0x000000FF. This indicates that an attempt was made to insert a new item into a reserve queue, causing the queue to overflow.
那么,我们的目标就是把TypeIndex的偏移量从0xc改成0x0,第一个指针是空指针,不被使用的,在Windows7中有一个漏洞,可以调用NtAllocateVirtualMemory来映射到NULL页面,然后覆盖0x60处的指针,指向shellcode地址,完成溢出覆盖,然后接下来只需要释放这个对象,即可完成利用 编写EXP 完整利用代码如下(以删去一些不必要的打印以...
(by default, string::size_type is a typedef of size_t. std::string uses the same type as the memory allocator it's using; the standard allocator uses size_t.) Andy PS putty is not a compiler: http://en.wikipedia.org/wiki/PuTTY ...
Error result of reserved memory access in a std::vectorCustom allocators and container overflowAddress Sanitizer container overflow checks support non-std::allocator allocators. However, because AddressSanitizer doesn't know whether a custom allocator conforms to AddressSanitizer requirements such as ...
allocator<char> > const&, Assimp::IOSystem*) /workspace/assimp_fuzzer/assimp_asan/code/Common/BaseImporter.cpp:131:9#4 0x55e018dc97e4 in Assimp::Importer::ReadFile(char const*, unsigned int) /workspace/assimp_fuzzer/assimp_asan/code/Common/Importer.cpp:709:30#5 0x55e018dc70a2 in ...
那么,我们的目标就是把TypeIndex的偏移量从0xc改成0x0,第一个指针是空指针,不被使用的,在Windows7中有一个漏洞,可以调用NtAllocateVirtualMemory来映射到NULL页面,然后覆盖0x60处的指针,指向shellcode地址,完成溢出覆盖,然后接下来只需要释放这个对象,即可完成利用 ...
Hence, if attackers are able to read arbitrary memory locations, they can bypass the countermeasure. In this paper we present an approach that, when applied to a memory allocator, will protect against this attack vector without resorting to magic. We implemented our approach by modifying an ...
println!("Couldn't get the current memory usage :("); } } 可以自定义Alloc,因为Rust提供的全局global_alloc,我们可以通过自定义Alloc计算当前申请的内存数,以及可以用这种方式检查内存泄漏,典型的jemalloc就是通过这种方式来的,我们用这种方式实现简单的内存统计,我们定义了一个Trallocator: ...