Linux Exploits & Mitigation: Memory and Pointer Vulnerabilities
Ubuntu 20.04
| Expert
- 14 videos | 1h 10m 39s
- Includes Assessment
- Earns a Badge
Memory and pointer vulnerabilities come from a number of common programmer mistakes. Being able to recognize, debug, and fix unsafe memory allocation and access errors is essential to avoiding vulnerabilities. In this course, you'll explore how memory and pointer vulnerabilities arise and how they lead to program errors and exploits. You'll look at how memory is allocated and accessed in a typical C program. You'll investigate what causes heap and stack overflows, use-after-free (UAF) vulnerabilities, and out-of-bounds access errors. In addition, you'll recognize dangling pointers, NULL dereferences, and off-by-one loops. Finally, you'll delve into how coding errors lead to corrupted memory and arbitrary code execution.
WHAT YOU WILL LEARN
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Discover the key concepts covered in this course
Describe methods and goals for allocating memory
Investigate what it means to overflow the heap
Recognize and avoid dangling pointers in a c program
Recognize and avoid null dereferences in a c program
Investigate what it means to exploit the heap
Illustrate use-after-free (uaf) vulnerabilities -
Recognize and avoid stack buffer overflows
Describe the nature of out-of-bounds write vulnerabilities and their impact
Recognize and avoid looping off-by-one in a c program
Describe how coding errors and vulnerabilities lead to corrupting memory
Illustrate how to execute arbitrary code introduced by coding errors
Illustrate how out-of-bounds errors are exploited
Summarize the key concepts covered in this course
IN THIS COURSE
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1m 20s
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5m 24s
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3. Overflowing the Heap5m 55s
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4. Dangling Pointers5m 51s
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5. Dereferencing NULL6m 9s
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6. Exploiting the Heap8m 47s
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7. Using After-free6m 31s
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8. Overflowing the Stack5m 47s
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9. Accessing Out-of-bounds4m 35s
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10. Looping Off-by-one6m 30s
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11. Corrupting Memory4m 15s
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12. Executing Arbitrary Code4m 44s
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13. Exploiting Out-of-bounds4m 1s
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14. Course Summary50s
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