EMC Legato NetWorker 'nsrd.exe' and 'nsrexecd.exe' Heap Overflows Let Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1015500
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SecurityTracker URL: http://securitytracker.com/id?1015500
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CVE Reference: CVE-2005-3658
, CVE-2005-3659
(Links to External Site)
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Date: Jan 18 2006
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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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Advisory: iDEFENSE
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Version(s): 7.2.1; possibly other versions
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Description: iDEFENSE reported several vulnerabilities in Legato NetWorker. A remote user can execute arbitrary code on the target system.
A remote user can send specially crafted RPC requests to RPC program number 390109 on the target system to trigger a heap overflow
or a NULL pointer dereference in 'nsrd.exe'.
Backup client systems and server systems are affected.
A remote user can also
send specially crafted RPC requests to RPC program number 390113 on the target system to trigger a heap overflow in 'nsrexecd.exe'.
The
vendor was notified on November 17, 2005.
The original advisories are available at:
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=373
http://
www.idefense.com/intelligence/vulnerabilities/display.php?id=374
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=375
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Impact: A remote user can cause the nsrd service to crash.
A remote user can execute arbitrary code on the target system.
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Solution: The vendor has issued a fixed version (7.1.4, 7.3). Also, a hotfix is available for version 7.2.1 at:
ftp://ftp.legato.com/pub/NetWorker/Updates/LGTpa83990
The
future version 7.2.2 will include the fix.
The vendor's advisory is available at:
http://www.legato.com/support/websupport/product_alerts/011606_NW.htm
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Vendor URL: www.legato.com/support/websupport/product_alerts/011606_NW.htm (Links to External Site)
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Cause: Boundary error
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Underlying OS: Linux (Any), UNIX (AIX), UNIX (HP/UX), UNIX (OS X), UNIX (SGI/IRIX), UNIX (Solaris - SunOS), UNIX (Tru64), Windows (Any)
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Reported By: iDEFENSE Labs Security Advisories <idlabs-advisories@lists.idefense.com>
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Message History:
None.
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Source Message Contents
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Date: Tue, 17 Jan 2006 18:15:15 -0500
From: iDEFENSE Labs Security Advisories <idlabs-advisories@lists.idefense.com>
Subject: iDefense Security Advisory 01.17.06: EMC Legato Networker nsrd.exe
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EMC Legato Networker nsrd.exe Heap Overflow Vulnerability
iDefense Security Advisory 01.17.06
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=373
January 17, 2006
I. BACKGROUND
EMC Legato NetWorker is a cross-platform backup and recovery
application.
II. DESCRIPTION
Remote exploitation of a heap overflow vulnerability in EMC Corp.'s
Legato Networker allows attackers to execute arbitrary code on Windows
platforms.
The vulnerability specifically exists due to improper handling of
malformed RPC requests to RPC program number 390109. When such a request
is sent by an attacker, it is possible to overwrite portions of heap
memory, thus leading to arbitrary code execution.
III. ANALYSIS
Successful exploitation allows a remote attacker to gain access to a
targeted machine. As nsrd.exe is installed on backup client machines
and server machines, an attacker may rapidly compromise a network using
this vulnerability.
IV. DETECTION
iDefense has confirmed this vulnerability in Networker 7.2 build 172.
All previous versions are suspected vulnerable.
V. WORKAROUND
iDefense is currently unaware of any workarounds for this issue.
VI. VENDOR RESPONSE
"Complete resolutions to the vulnerabilities are available today in
NetWorker 7.1.4 and 7.3. EMC has created a hot-fix to protect against
vulnerabilities for 7.2.1 customers. No fixes are planned for previous
NetWorker releases."
"These remedies are available for download at:"
http://www.legato.com/support/websupport/product_alerts/011606_NW.htm
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CAN-2005-3658 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org), which standardizes names for
security problems.
VIII. DISCLOSURE TIMELINE
11/17/2005 Initial vendor notification
11/17/2005 Initial vendor response
01/17/2006 Coordinated public disclosure
IX. CREDIT
Jo Goossens is credited with the discovery of this vulnerability.
Get paid for vulnerability research
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http://labs.idefense.com
X. LEGAL NOTICES
Copyright © 2006 iDefense, Inc.
Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically, please
email customerservice@idefense.com for permission.
Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct, indirect,
or consequential loss or damage arising from use of, or reliance on,
this information.
_______________________________________________
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http://www.idefense.com/mailman/listinfo/idlabs-advisories
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