(Sun Issues Fix for Sun Linux) Re: 'nfs-utils' Buffer Overflow May Let Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1007669 |
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SecurityTracker URL: http://securitytracker.com/id/1007669
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CVE Reference:
CVE-2003-0252
(Links to External Site)
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Date: Sep 10 2003
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Impact:
Denial of service via network, Execution of arbitrary code via network, User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Description:
An off-by one buffer overflow vulnerability was reported in 'nfs-utils'. A remote user may be able to execute arbitrary code on the target system.
Janusz Niewiadomski of iSEC Security Research reported that a remote user can send a specially crafted request to the rpc.mountd daemon to trigger an overflow in the xlog() logging function. If the user-supplied string is 1023 bytes or longer, the trailing null '\0' byte is written beyond the end of the buffer.
According to the report, a remote user can cause the daemon to crash or execute arbitrary code with the privileges of the daemon. However, Red Hat reported in advisory RHSA-2003:206-01 that "it is not believed that this bug could lead to remote arbitrary code execution."
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Impact:
A remote user can send a specially crafted NFS request to cause the rpc.mountd daemon to crash or execute arbitrary code. The arbitrary code will run with the privileges of the daemon.
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Solution:
Sun has issued a fix for Sun Linux 5.0 in nfs-utils versions 0.3.1-14.72 or later, available at:
http://sunsolve.sun.com/patches/linux/security.html
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Vendor URL: sourceforge.net/projects/nfs/ (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
Linux (Sun)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Mon, 08 Sep 2003 18:22:35 -0400
Subject: http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F55882
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55882 Sun Linux 5.0 Denial of Service Vulnerability in nfs-utils Package Version 1.0.3
and Earlier 4 Sep 2003
CVE: CAN-2003-0252
Sun Linux 5.0 with nfs-utils versions 0.3.0 or earlier is affected.
Sun has issued a fix:
Sun Linux 5.0 with nfs-utils versions 0.3.1-14.72 or later
Sun Linux patches for this issue are available at:
http://sunsolve.sun.com/patches/linux/security.html.
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Sun Alert ID: 55882
Synopsis: Sun Linux 5.0 Denial of Service Vulnerability in "nfs-utils" Package Version
1.0.3 and Earlier
Category: Security
Product: Sun Linux
BugIDs: 4890279
Avoidance: Patch
State: Resolved
Date Released: 23-Jul-2003
Date Closed: 04-Sep-2003
Date Modified: 04-Sep-2003
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