CWE - 120 : Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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CWE Definition
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http://cwe.mitre.org/data/definitions/120.html
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Number of vulnerabilities:
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0
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Description
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The program copies an input buffer to an output buffer without
verifying that the size of the input buffer is less than the size of the output
buffer, leading to a buffer overflow.A buffer overflow condition exists when a program attempts to put more
data in a buffer than it can hold, or when a program attempts to put data in
a memory area outside of the boundaries of a buffer. The simplest type of
error, and the most common cause of buffer overflows, is the "classic" case
in which the program copies the buffer without checking its length at all.
Other variants exist, but the existence of a classic overflow strongly
suggests that the programmer is not considering even the most basic of
security protections. |
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Background Details
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Other Notes
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Warning! CWE definitions are provided as a quick reference. They are
not complete and may not be up to date!
You must visit
http://cwe.mitre.org/ for a complete list of CWE entries
and for more details.
