Novell ZenWorks TFTPD Remote Code Execution Vulnerability

February 17th, 2011
ZDI-11-089 ZDI-CAN-877

CVE ID

CVE-2010-4323

CVSS Score

10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected Vendors

Novell

Affected Products

Zenworks

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Novell Zenworks Configuration Manager.
Authentication is not required to exploit this vulnerability.

The flaw exists within the novell-tftp.exe component which listens by default on UDP port 69. When handling a request the process blindly copies user supplied data into a fixed-length buffer on the heap. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the ZenWorks user.

Additional Details

Novell has issued an update to correct this vulnerability. More details can be found at:
http://www.novell.com/support/php/search.do?cmd=displayKC&docType=kc&externalId=7007896&sliceId=2&docTypeID=DT_TID_1_1&dialogID=205671351&stateId=0%200%20205669596

Disclosure Timeline

  • 2010-08-23 - Vulnerability reported to vendor
  • 2011-02-17 - Coordinated public release of advisory

Credit

Francis Provencher for Protek Researchh Lab's
AbdulAziz Hariri of ThirdEyeTesters
SilentSignal

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