Linux Kernel Core Dump Handling May Let Local Users Deny Service or Gain Elevated Privileges
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SecurityTracker Alert ID: 1016451 |
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SecurityTracker URL: http://securitytracker.com/id/1016451
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CVE Reference:
CVE-2006-2451
(Links to External Site)
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Date: Jul 7 2006
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Impact:
Denial of service via local system, Modification of system information, Root access via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 2.6.x
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Description:
A vulnerability was reported in Linux Kernel. A local user can obtain elevated privileges on the target system. A local user can cause denial of service conditions.
A local user can cause the kernel to dump a core file into a directory that does not have permissions to write to. As a result, the local user can consume excessive disk space or potentially gain root privileges on the target system.
Red Hat discovered this vulnerability.
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Impact:
A local user can obtain elevated privileges on the target system.
A local user can cause denial of service conditions on the target system.
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Solution:
A patch for kernel version 2.6.17 is available at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/linux-2.6.17.y.git;a=commit;h=0af184bb9f80edfbb94de46cb52e9592e5a547b0
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Vendor URL: www.kernel.org/ (Links to External Site)
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Cause:
Access control error
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Underlying OS:
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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: Fri, 7 Jul 2006 15:10:12 -0400
Subject: Linux kernel vulnerability
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Red Hat reported:
During security research, Red Hat discovered a behavioral flaw in core dump
handling. A local user could create a program that would cause a core file
to be dumped into a directory they would not normally have permissions to
write to. This could lead to a denial of service (disk consumption), or
allow the local user to gain root privileges. (CVE-2006-2451)
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