Linux Kernel ncpfs Stack Overflow Lets Local Users Gain Elevated Privileges
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SecurityTracker Alert ID: 1009094 |
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SecurityTracker URL: http://securitytracker.com/id/1009094
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CVE Reference:
CAN-2004-0010
(Links to External Site)
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Date: Feb 18 2004
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Impact:
Execution of arbitrary code via local system, Root access via local system, User access via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): Linux Kernel 2.6.2 and prior versions
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Description:
A vulnerability was reported in the Linux 2.6 kernel in ncpfs. A local user can gain elevated privileges on the target system.
It is reported that ncp_lookup() does not validate name component lengths. A local user can cause data to overflow onto the stack, resulting in the execution of arbitrary code.
Arjan van de Ven is credited with discovering this flaw.
[Editor's note: It is not clear if the 2.4 kernel or any other kernel series is affected.]
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Impact:
A local user can gain elevated privileges on the target system.
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Solution:
A fix is included in Linux Kernel 2.6.3, available at:
http://www.kernel.org/pub/linux/kernel/v2.6/patch-2.6.3.bz2
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Vendor URL: www.kernel.org/ (Links to External Site)
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Cause:
Boundary 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: Wed, 18 Feb 2004 08:07:25 -0500
Subject: CAN-2004-0010
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CVE: CAN-2004-0010
It is reported that a local user can gain elevated privileges by exploiting a flaw in the
ncp_lookup() function in ncpfs. According to the report, ncpfs is used to allow a system
to mount volumes of NetWare servers or print to NetWare printers.
Arjan van de Ven is credited with discovering this flaw.
Red Hat provided this information.
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