CWE-786 — Access of Memory Location Before Start of Buffer
CWE-786: Access of Memory Location Before Start of Buffer
MITRE CWE weakness
| Kind | Weakness |
| Abstraction | Base |
| Status | Incomplete |
| Likelihood of exploit | — |
Description
The product reads or writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.
This typically occurs when a pointer or its index is decremented to a position before the buffer, when pointer arithmetic results in a position before the beginning of the valid memory location, or when a negative index is used.
Common consequences
- Confidentiality: Read Memory
- Integrity, Availability: Modify Memory, DoS: Crash, Exit, or Restart
- Integrity: Modify Memory, Execute Unauthorized Code or Commands
Mitigations
(none listed)
References
- CWE page: https://cwe.mitre.org/data/definitions/786.html
- CWE list: https://cwe.mitre.org/data/index.html