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Category:   Application (Generic)  >   VMware ESXi Vendors:   VMware
(VMware Issues Fix for ESX Server) Gzip Bugs in Expanding Archives Let Remote Users Cause Denial of Service Conditions or Arbitrary Code Execution
SecurityTracker Alert ID:  1017780
SecurityTracker URL:  http://securitytracker.com/id/1017780
CVE Reference:   CVE-2006-4334, CVE-2006-4335, CVE-2006-4336, CVE-2006-4337, CVE-2006-4338   (Links to External Site)
Date:  Mar 16 2007
Impact:   Denial of service via network, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.0.1
Description:   A vulnerability was reported in Gzip. A remote user can cause arbitrary code to be executed on the target user's system. VMware ESX Server is affected.

A remote user can create a specially crafted archive that, when expanded by the target user or application, will trigger a buffer overflow and execute arbitrary code on the target system. The code will run with the privileges of the target user or application.

A specially crafted archive can also trigger a NULL pointer dereference or cause gzip to enter an infinite loop.

Tavis Ormandy of the Google Security Team discovered these vulnerabilities.

Impact:   A remote user can create an archive that, when processed by the target user or application, will execute arbitrary code on the target system or cause gzip to crash or hang.
Solution:   VMware has issued a fix (Patch ESX-5885387) for VMware ESX Server 3.0.1, which is affected by this gzip vulnerability.

The VMware advisory is available at:

http://kb.vmware.com/vmtnkb/search.do?cmd=displayKC&docType=kc&externalId=5885387&sliceId=SAL_Public&dialogID=13061920

Cause:   Boundary error, State error

Message History:   This archive entry is a follow-up to the message listed below.
Sep 19 2006 Gzip Bugs in Expanding Archives Let Remote Users Cause Denial of Service Conditions or Arbitrary Code Execution



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