0000031: OLE FAT Sector parsing error could cause wrong data to be read in files that have greater than 108 sectors. - Optima SC Inc. products bug tracking tool

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ID

Category

Severity

Reproducibility

Date Submitted

Last Update

0000031

[File Access Library - Filestreams] Behavior/Execution

major

always

2009-02-16 23:47

2009-03-19 23:45

Reporter

carl

View Status

public

Assigned To

carl

Priority

normal

Resolution

fixed

Status

closed

Product Version

0.8.4

Summary

0000031: OLE FAT Sector parsing error could cause wrong data to be read in files that have greater than 108 sectors.

Description

The data read and parsing could fail in certain circumstances when trying to read OLE compound files (Microsoft Word, Excel, etc documents), when the FAT Table is also also allocated in sectors (apart from the first 108 entries). A Range check error would occur or the data read would simply be invalid.

Additional Information

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Notes
(0000387) carl (administrator) 2009-02-16 23:48	The bug was caused because when reading the FAT table, the last entry was also indicating a FAT entry, while in reality it indicates the next sector used for the FAT table storage. This would cause invalid FAT data to be read.

Issue History
Date Modified	Username	Field	Change
2009-02-16 23:47	carl	New Issue
2009-02-16 23:47	carl	Status	new => assigned
2009-02-16 23:47	carl	Assigned To	=> carl
2009-02-16 23:48	carl	Note Added: 0000387
2009-02-16 23:48	carl	Status	assigned => resolved
2009-02-16 23:48	carl	Resolution	open => fixed
2009-02-16 23:48	carl	Fixed in Version	=> 0.8.5
2009-03-19 23:45	carl	Status	resolved => closed

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