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Category:   Application (Generic)  >   Dhcp Vendors:   ISC (Internet Software Consortium)
(NetBSD Issues Fix) DHCP dhclient Stack Overflow in script_write_params() Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1022568
SecurityTracker URL:  http://securitytracker.com/id/1022568
CVE Reference:   CVE-2009-0692   (Links to External Site)
Date:  Jul 15 2009
Impact:   Execution of arbitrary code via network, Root access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to versions 3.1.2p1, 4.0.1p1, 4.1.0p1
Description:   A vulnerability was reported in the DHCP dhclient. A remote server can execute arbitrary code on the target system.

A remote server can return a specially crafted leased address and subnet-mask value to the connected dhclient to trigger a stack overflow in the script_write_params() function and execute arbitrary code on the target system. The code will run with root privileges.

Mandriva Linux Engineering Team reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system with root privileges.
Solution:   NetBSD has issued a fix.

The NetBSD advisory is available at:

http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-010.txt.asc

Vendor URL:  www.isc.org/node/468 (Links to External Site)
Cause:   Boundary error
Underlying OS:  UNIX (NetBSD)
Underlying OS Comments:  4.0, 4.0.*, 5.0

Message History:   This archive entry is a follow-up to the message listed below.
Jul 14 2009 DHCP dhclient Stack Overflow in script_write_params() Lets Remote Users Execute Arbitrary Code



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