High risk vulnerability in OpenOffice RTF parser Jun 13 2007 05:15PM
NGSSoftware Insight Security Research (nisr ngssoftware com)
John Heasman of NGSSoftware has discovered a high risk vulnerability
in the handling of RTF documents within OpenOffice.

The vulnerability affects all versions of OpenOffice prior to 2.2.1. If
an attacker can coax a user into opening a specially crafted RTF
document then the attacker can execute arbitrary code in the security
context of their victim.

When parsing the "prtdata" tag, the OpenOffice RTF parser allocates memory
based on the first proceeding token but copies the contents of the second,
thus by setting the first token to a value smaller than the length of the
second it is possible to overwrite heap data. This can be exploited to
execute arbitrary code by overwriting vtable entries.

This issue has now been resolved; OpenOffice users are strongly recommended
to install OpenOffice 2.2.1, or obtain the latest OpenOffice packages
appropriate to their distribution.

Further details are available at http://www.openoffice.org

NGSSoftware Insight Security Research
+44(0)208 401 0070


The information contained in this email and any subsequent
correspondence is private, is solely for the intended recipient(s) and
may contain confidential or privileged information. For those other than
the intended recipient(s), any disclosure, copying, distribution, or any
other action taken, or omitted to be taken, in reliance on such
information is prohibited and may be unlawful. If you are not the
intended recipient and have received this message in error, please
inform the sender and delete this mail and any attachments.

The views expressed in this email do not necessarily reflect NGS policy.
NGS accepts no liability or responsibility for any onward transmission
or use of emails and attachments having left the NGS domain.

NGS and NGSSoftware are trading names of Next Generation Security
Software Ltd. Registered office address: 52 Throwley Way, Sutton, SM1
4BF with Company Number 04225835 and VAT Number 783096402

[ reply ]


Privacy Statement
Copyright 2010, SecurityFocus