Advisory Details

March 21st, 2011

Libtiff ThunderCode Decoder THUNDER_2BITDELTAS Remote Code Execution Vulnerability

ZDI-11-107
ZDI-CAN-1004

CVE ID CVE-2011-1167
CVSS SCORE 9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)
AFFECTED VENDORS Libtiff
AFFECTED PRODUCTS libtiff
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10729. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of libtiff. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the implementation of the ThunderDecode codec. While decoding a particular code within a row, the decoder will fail to accommodate for the total expanded size of the row. This can cause a heap-based buffer overflow which can lead to code execution under the context of the application utilizing the library.

ADDITIONAL DETAILS Libtiff has issued an update to correct this vulnerability. More details can be found at:
http://bugzilla.maptools.org/show_bug.cgi?id=2300
DISCLOSURE TIMELINE
  • 2011-01-21 - Vulnerability reported to vendor
  • 2011-03-21 - Coordinated public release of advisory
CREDIT Martin Barbella
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