ID |
CVE-2016-4291
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Summary |
When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will use a field from the structure in an operation that can cause the integer to overflow. This result is then used to allocate memory to copy file data in. Due to the lack of bounds checking on the integer, the allocated memory buffer can be made to be undersized at which point the reading of file data will write outside the bounds of the buffer. This can lead to code execution under the context of the application. |
References |
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Vulnerable Configurations |
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CVSS |
Base: | 6.8 (as of 11-01-2017 - 02:59) |
Impact: | |
Exploitability: | |
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CWE |
CWE-190 |
CAPEC |
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Forced Integer Overflow
This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.
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Access |
Vector | Complexity | Authentication |
NETWORK |
MEDIUM |
NONE |
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Impact |
Confidentiality | Integrity | Availability |
PARTIAL |
PARTIAL |
PARTIAL |
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cvss-vector
via4
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AV:N/AC:M/Au:N/C:P/I:P/A:P
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refmap
via4
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Last major update |
11-01-2017 - 02:59 |
Published |
06-01-2017 - 21:59 |
Last modified |
11-01-2017 - 02:59 |