Some vulnerabilities have been reported in OpenOffice, which potentially can be exploited by malicious people to compromise a user's system.
The vulnerabilities are caused due to integer overflows when processing
certain tags within TIFF images. This can be exploited to cause
heap-based buffer overflows by e.g. tricking a user into opening a
specially crafted document.
Successful exploitation may allow the execution of arbitrary code.
The vulnerabilities are reported in versions prior to 2.3.
Source: Secunia