I am new to AO here and this is my first tutorial, so go easy. I've seen some good tutorials on the principles of Stack-Based Overflows, but haven't seen much on Heap-Based Overflows (maybe I missed it). Anyways, this tutorial should give you a general
Of course, if you want to completely solve this problem, you can also install theAddress Sanitizertool in your own local environment to test. References https://stackoverflow.com/questions/51579267/addresssanitizer-heap-buffer-overflow-on-address https://github.com/google/sanitizers/wiki/AddressSaniti...
Unfortunately, for large arrays, I got stack overflows. Finally, I solved the problems by giving an extra dimension of 4 to each of the arrays that had been in the PRIVATE list, so that each i got its own arrays. Using HEAP now causes no problem. That 'bug' was...
The current running version 6.x of SRS has encountered an error. The error message indicates a heap-buffer-overflow at memory address 0x604000007910. The program counter (pc) was at 0x55bf19bddcab, with base pointer (bp) at 0x7f6225e5de30 and stack pointer (sp) at 0x7f6225e5de20. Th...
fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca red...
下面我们开始考虑 payload 该如何构造,首先我们使用gdb观察程序在 buffer overflow 的时候的堆布局是怎样的,在我的机器上很不幸的是可以看到被溢出的 chunk 正好紧跟在 top chunk的后面,这就给我们的利用带来了困难。接下来我先后考虑了三种思路: 思路一:覆盖top chunk的size字段 这是一种常见的glibc heap 利用技巧...
3、在注入的so中添加signal处理函数,将崩溃或heap overflow的信息记录到文件。4、运行app (此时已经可以检测该app的so是否存在uaf或heap over-flow漏洞)以上只是个人的想法与观点,如有不当之处,望各位大佬指出。共同学习进步。1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 #include <...
下面我们开始考虑 payload 该如何构造,首先我们使用gdb观察程序在 buffer overflow 的时候的堆布局是怎样的,在我的机器上很不幸的是可以看到被溢出的 chunk 正好紧跟在 top chunk的后面,这就给我们的利用带来了困难。接下来我先后考虑了三种思路: 思路一:覆盖top chunk的size字段 这是一种常见的glibc heap 利用技巧...
It looks like the app is failing to send bytes to the backend, and I guess the most typical case would be "write buffer overflow". It is not clear how that could be possible. Of course we can add a network timeout to the close call, however it would shift "out of memory" to the...
Sorry I am late to this. Can you elaborate the JVM statement? Do you mean that GC is slow in recycling the memory? Coming from C/C++ world, I'd think it normal for application to handle memory malloc failure. Is there any doc or discussion thread that talk about elastic search memory...