ISC DHCP Meta-Character Filtering Flaw in dhclient Lets Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1025300 |
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SecurityTracker URL: http://securitytracker.com/id/1025300
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CVE Reference:
CVE-2011-0997
(Links to External Site)
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Date: Apr 6 2011
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Impact:
Execution of arbitrary code via network, User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 3.x prior to 3.1-ESV-R1, 4.x prior to 4.1-ESV-R2, 4.2 prior to 4.2.1-P1
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Description:
A vulnerability was reported in ISC DHCP. A remote user can execute arbitrary commands on the target system.
A remote DHCP server can return specially crafted hostname field meta-characters to cause the connected dhclient to execute arbitrary commands.
Sebastian Krahmer and Marius Tomaschewski of the SUSE Security Team reported this vulnerability.
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Impact:
A remote user can execute arbitrary code on the target system.
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Solution:
The vendor has issued a fix (3.1-ESV-R1, 4.1-ESV-R2, 4.2.1-P1).
The vendor's advisory is available at:
https://www.isc.org/software/dhcp/advisories/cve-2011-0997
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Vendor URL: www.isc.org/software/dhcp/advisories/cve-2011-0997 (Links to External Site)
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Cause:
Input validation error
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Underlying OS:
Linux (Any), UNIX (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Wed, 06 Apr 2011 19:22:30 +0000
Subject: ISC DHCP
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https://www.isc.org/software/dhcp/advisories/cve-2011-0997
CVE-2011-0997
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