Advisory Details

December 13th, 2010

Novell ZENworks Desktop Management Linux TFTPD Remote Code Execution Vulnerability

ZDI-10-285
ZDI-CAN-847

CVE ID
CVSS SCORE 9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)
AFFECTED VENDORS Novell
AFFECTED PRODUCTS Zenworks
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 2132. 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 Novell Zenworks Desktop Management. Authentication is not required to exploit this vulnerability.

The flaw exists within the tftpd server component which listens by default on UDP port 69. When handling the filename in a Read Request (0x01) packet type the process blindly copies user supplied data into a fixed-length buffer on the stack. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the tftpd server process.

ADDITIONAL DETAILS

Fixed in ZENworks 7 Desktop Management Support Pack 1 Interim Release 4 Hot Patch 5:
http://download.novell.com/Download?buildid=r9kcCymJ7Os

Documented in TID 7007321
http://www.novell.com/support/dynamickc.do?cmd=show&forward=nonthreadedKC&docType=kc&externalId=7007321&sliceId=1


DISCLOSURE TIMELINE
  • 2010-07-20 - Vulnerability reported to vendor
  • 2010-12-13 - Coordinated public release of advisory
CREDIT Francis Provencher for Protek Researchh Lab's
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