CWE-126 - Buffer Over-read
CWE-126
- Abstraction:
- Variant
- Structure:
- Simple
- Status:
- Draft
- Weakness Name
Buffer Over-read
- Description
The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.
This typically occurs when the pointer or its index is incremented to a position beyond the bounds of the buffer or when pointer arithmetic results in a position outside of the valid memory location to name a few. This may result in exposure of sensitive information or possibly a crash.
- Common Consequences
Scope: Confidentiality
Impact: Read Memory
Scope: Confidentiality
Impact: Bypass Protection Mechanism
Notes: By reading out-of-bounds memory, an attacker might be able to get secret values, such as memory addresses, which can be bypass protection mechanisms such as ASLR in order to improve the reliability and likelihood of exploiting a separate weakness to achieve code execution instead of just denial of service.
- Related Weaknesses
- Release Date:
- 2006-07-19
- Latest Modification Date:
- 2023-10-26
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