Microsoft Office RTF \dpendgroup Control Word Buffer Overflow VulnerabilityTPTI-08-08: December 9th, 2008
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 6612. For further product information on the TippingPoint IPS:
Vulnerability DetailsThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of multiple Microsoft products. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file or e-mail message.
The specific flaw exists in the parsing of mismatched \dpgroup and \dpendgroup control words. If a specially crafted RTF file contains excessive \dpendgroup tags a memory miscalculation can lead to an exploitable buffer overflow. Exploitation of this issue leads to arbitrary code execution under the context of the user accessing the file.
Vendor ResponseMicrosoft has issued an update to correct this vulnerability. More details can be found at:
2008-07-08 - Vulnerability reported to vendor
2008-12-09 - Coordinated public release of advisory