Access of Memory Location Before Start of Buffer
Weakness ID: 786 (Weakness Base)Status: Incomplete
+ Description

Description Summary

The software reads or writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.

Extended Description

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.

+ Relationships
NatureTypeIDNameView(s) this relationship pertains toView(s)
ChildOfWeakness ClassWeakness Class119Failure to Constrain Operations within the Bounds of a Memory Buffer
Development Concepts (primary)699
Research Concepts (primary)1000
ParentOfWeakness BaseWeakness Base124Buffer Underwrite ('Buffer Underflow')
Development Concepts (primary)699
Research Concepts (primary)1000
ParentOfWeakness VariantWeakness Variant127Buffer Under-read
Development Concepts (primary)699
Research Concepts (primary)1000
+ Content History
Submissions
Submission DateSubmitterOrganizationSource
2009-10-21MITREInternal CWE Team
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