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Hancom : Security Vulnerabilities (Overflow)

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# CVE ID CWE ID # of Exploits Vulnerability Type(s) Publish Date Update Date Score Gained Access Level Access Complexity Authentication Conf. Integ. Avail.
1 CVE-2016-4298 190 Exec Code Overflow 2017-01-06 2017-01-10
6.8
None Remote Medium Not required Partial Partial Partial
When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will attempt to allocate space for a list of elements using a length from the file. When calculating this length, an integer overflow can be made to occur which will cause the buffer to be undersized when the application tries to copy file data into the object containing this structure. This allows one to overwrite contiguous data in the heap which can lead to code-execution under the context of the application.
2 CVE-2016-4296 119 Exec Code Overflow 2017-01-06 2017-01-10
6.8
None Remote Medium Not required Partial Partial Partial
When opening a Hangul Hcell Document (.cell) and processing a record that uses the CSSValFormat object, Hancom Office 2014 will search for an underscore ("_") character at the end of the string and write a null terminator after it. If the character is at the very end of the string, the application will mistakenly write the null-byte outside the bounds of its destination. This can result in heap corruption that can lead code execution under the context of the application
3 CVE-2016-4295 119 Exec Code Overflow 2017-01-06 2017-01-10
6.8
None Remote Medium Not required Partial Partial Partial
When opening a Hangul Hcell Document (.cell) and processing a particular record within the Workbook stream, an index miscalculation leading to a heap overlow can be made to occur in Hancom Office 2014. The vulnerability occurs when processing data for a formula used to render a chart via the HncChartPlugin.hplg library. Due to a lack of bounds-checking when incrementing an index that is used for writing into a buffer for formulae, the application can be made to write pointer data outside its bounds which can lead to code execution under the context of the application.
4 CVE-2016-4294 119 Exec Code Overflow 2017-01-06 2017-01-10
6.8
None Remote Medium Not required Partial Partial Partial
When opening a Hangul Hcell Document (.cell) and processing a property record within the Workbook stream, Hancom Office 2014 will attempt to allocate space for an element using a length from the file. When copying user-supplied data to this buffer, however, the application will use a different size which leads to a heap-based buffer overflow. This vulnerability can lead to code-execution under the context of the application.
5 CVE-2016-4292 119 Exec Code Overflow 2017-01-06 2017-01-10
6.8
None Remote Medium Not required Partial Partial Partial
When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will use a static size to allocate a heap buffer yet explicitly trust a size from the file when modifying data inside of it. Due to this, an aggressor can corrupt memory outside the bounds of this buffer which can lead to code execution under the context of the application.
6 CVE-2016-4291 190 Exec Code Overflow 2017-01-06 2017-01-10
6.8
None Remote Medium Not required Partial Partial Partial
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.
7 CVE-2016-4290 190 Exec Code Overflow 2017-01-06 2017-01-10
6.8
None Remote Medium Not required Partial Partial Partial
When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will attempt to allocate space for a block of data within the file. When calculating this length, the application will use a value from the file and add a constant to it without checking whether the addition of the constant will cause the integer to overflow which will cause the buffer to be undersized when the application tries to copy file data into it. This allows one to overwrite contiguous data in the heap which can lead to code-execution under the context of the application.
8 CVE-2015-2810 189 DoS Overflow 2015-05-15 2016-12-02
7.5
None Remote Low Not required Partial Partial Partial
Integer overflow in the HwpApp::CHncSDS_Manager function in Hancom Office HanWord processor, as used in Hwp 2014 VP before 9.1.0.2342, HanWord Viewer 2007 and Viewer 2010 8.5.6.1158, and HwpViewer 2014 VP 9.1.0.2186, allows remote attackers to cause a denial of service (crash) and possibly "influence the program's execution flow" via a document with a large paragraph size, which triggers heap corruption.
9 CVE-2013-7420 119 Overflow 2015-01-12 2015-01-13
7.5
None Remote Low Not required Partial Partial Partial
Buffer overflow in Hancom Office 2010 SE allows remote attackers to execute arbitrary via a long string in the Text attribute in a TEXTART XML element in an HML file.
10 CVE-2012-1206 189 Exec Code Overflow 2012-02-24 2012-02-24
9.3
None Remote Medium Not required Complete Complete Complete
Multiple integer overflows in Hancom Office 2010 SE 8.5.5 allow remote attackers to execute arbitrary code via large dimension values in a (1) JPG image to the ImportGR in the JPG image filter module (HncJpeg10.flt) or (2) PNG image to the PNG image filter module (HncPng10.flt), which triggers a heap-based buffer overflow.
Total number of vulnerabilities : 10   Page : 1 (This Page)
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