(EnGarde Issues Fix) Rsync Heap Overflow in Daemon Mode Lets Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1008391 |
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SecurityTracker URL: http://securitytracker.com/id/1008391
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CVE Reference:
CAN-2003-0962
(Links to External Site)
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Date: Dec 5 2003
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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): 2.5.6 and prior versions
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Description:
A vulnerability was reported in rsync. A remote user can execute arbitrary code on the target system.
It is reported that a remote user can connect to a target server running rsync on TCP port 873 and send specially crafted data to execute arbitrary code. The code will run with the privileges of the rsync daemon.
Only systems that are running rsync in daemon mode are reportedly affected.
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Impact:
A remote user can execute arbitrary code with the privileges of the rsync daemon.
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Solution:
Guardian Digital has released a fix for EnGarde Secure Linux. Guardian Digital has backported the new fixes to version 2.4.6.
The MD5 sums for the updated EnGarde Secure Linux 1.0.1 packages are:
SRPMS/rsync-2.4.6-1.0.7.src.rpm
MD5 Sum: 0059b139dce38f237019ae64a5dfbd84
i386/rsync-2.4.6-1.0.7.i386.rpm
MD5 Sum: 3d6cba56a9ccf244f7078cdfc1704b5d
i686/rsync-2.4.6-1.0.7.i686.rpm
MD5 Sum: 68392cd5df92513f75107c037e7c6a29
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Vendor URL: rsync.samba.org/ (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
Linux (EnGarde)
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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: Thu, 4 Dec 2003 14:33:12 -0500 (EST)
Subject: [ESA-20031204-032] 'rsync' heap overflow vulnerability
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
+------------------------------------------------------------------------+
| Guardian Digital Security Advisory December 04, 2003 |
| http://www.guardiandigital.com ESA-20031204-032 |
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| Package: rsync |
| Summary: heap overflow vulnerability |
+------------------------------------------------------------------------+
EnGarde Secure Linux is an enterprise class Linux platform engineered
to enable corporations to quickly and cost-effectively build a complete
and secure Internet presence while preventing Internet threats.
OVERVIEW
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A heap overflow vulnerability has been discovered in all versions of
rsync prior to 2.5.7. This vulnerability, exploitable when rsync is
being run in "server mode", may allow the attacker to run arbitrary
code on the compromised server.
Guardian Digital has backported these fixes to version 2.4.6.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2003-0962 to this issue.
Guardian Digital products affected by this issue include:
EnGarde Secure Community v1.0.1
EnGarde Secure Community v2
EnGarde Secure Professional v1.1
EnGarde Secure Professional v1.2
EnGarde Secure Professional v1.5
It is recommended that all users apply this update as soon as possible.
SOLUTION
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Guardian Digital Secure Network subscribers may automatically update
affected systems by accessing their account from within the Guardian
Digital WebTool.
To modify your GDSN account and contact preferences, please go to:
https://www.guardiandigital.com/account/
Below are MD5 sums for the updated EnGarde Secure Linux 1.0.1 packages:
SRPMS/rsync-2.4.6-1.0.7.src.rpm
MD5 Sum: 0059b139dce38f237019ae64a5dfbd84
i386/rsync-2.4.6-1.0.7.i386.rpm
MD5 Sum: 3d6cba56a9ccf244f7078cdfc1704b5d
i686/rsync-2.4.6-1.0.7.i686.rpm
MD5 Sum: 68392cd5df92513f75107c037e7c6a29
REFERENCES
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Guardian Digital's public key:
http://ftp.engardelinux.org/pub/engarde/ENGARDE-GPG-KEY
rsync's Official Web Site:
http://rsync.samba.org
Guardian Digital Advisories:
http://infocenter.guardiandigital.com/advisories/
Security Contact: security@guardiandigital.com
- --------------------------------------------------------------------------
Author: Ryan W. Maple <ryan@guardiandigital.com>
Copyright 2003, Guardian Digital, Inc.
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Copyright(c) 2003 Guardian Digital, Inc. GuardianDigital.com
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