Title: Adobe eBook Reader File Restoration Privilege Escalation Vulnerability
Severity: MODERATE
Description:
Adobe eBook Reader is a client side application which is able to view Adobe eBooks, available for Microsoft Windows and Macintosh OS 9. eBooks are electronic books which provide some protection for content. Users may be able to view a book, but have limited publisher defined privileges to copy content. It is possible to define quotas, such as only allowing a user to print or copy a specific number of pages within a given time period.
It has been reported possible to bypass some quota restrictions. eBook maintains some information about the past actions of the local user for a given book in a number of local files. These files may be copied and later restored from these copies. Restoration will effectively restore the eBook data to it's original state, without any loss in functionality.
A user may thus backup specific local files, print or copy protected content, and then restore the local files. There will be no record of the printing or copying actions, and any non-zero quota may be effectively bypassed entirely.
This vulnerability has been reported in versions of eBook Reader for Microsoft Windows. It may, however, exist on other platforms.
Affected Products:
- Adobe eBook Reader for Windows 2.2.0
References:
- Adobe: eBook Reader Homepage
- CERT/CC: Vulnerability Note VU#438867
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