Both vulnerabilities affect all versions of Open Office prior to the 2.4.2 release. The recently-unveiled Open Office 3.0 release is not believed to be at risk from either vulnerability.
The flaws center on the way OpenOffice handles certain file types. An attacker could use a specially-crafted WMF or EMF file to cause a heap overflow error which would then leave the attacker able to execute malicious code on the targeted system.
No working exploit for either vulnerability is thought to exist in the wild. Credit for the discovery of both flaws was given to an anonymous researcher operating out of Chinese security firm SureRun.
The French Security Incident Response Team has rated both flaws as critical, the highest of its four alert levels. Both FrSIRT and the US Computer Emergency Response Team are advising users to update their copies of OpenOffice to protect from the vulnerabilities.
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