(Gentoo Issues Fix) AWStats Input Validation Flaws Let Users Execute Arbitrary Commands
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SecurityTracker Alert ID: 1013008 |
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SecurityTracker URL: http://securitytracker.com/id/1013008
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CVE Reference:
GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Jan 26 2005
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Impact:
Execution of arbitrary code via local system, Execution of arbitrary code via network, User access via local system, User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): prior to 6.3
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Description:
Two security vulnerabilities were reported in AWStats. A local or remote user can execute commands on the target system.
The vendor reported that the 'awstats.pl' script does not properly validate user-supplied input in system environment variables and other inputs. A local user can supply specially crafted input to execute arbitrary Perl code with the privileges of the web service. From code review, it appears that a remote user can supply a specially crafted plug-in name to execute arbitrary commands [however, the vendor did not confirm this.]
iDEFENSE is credited with reporting one of the two security flaws.
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Impact:
A local user can execute Perl commands on the target system with the privileges of the web service.
A remote user may be able to execute arbitrary commands.
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Solution:
Gentoo has released a fix and indicates that all AWStats users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-www/awstats-6.3"
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Vendor URL: awstats.sourceforge.net/ (Links to External Site)
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Cause:
Input validation error
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Underlying OS:
Linux (Mandriva/Mandrake)
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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: Tue, 25 Jan 2005 15:13:13 -0500
Subject: [gentoo-announce] [ GLSA 200501-36 ] AWStats: Remote code execution
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Gentoo Linux Security Advisory GLSA 200501-36
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http://security.gentoo.org/
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Severity: High
Title: AWStats: Remote code execution
Date: January 25, 2005
Bugs: #77963
ID: 200501-36
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Synopsis
========
AWStats fails to validate certain input, which could lead to the remote
execution of arbitrary code.
Background
==========
AWStats is an advanced log file analyzer and statistics generator.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-www/awstats < 6.3 >= 6.3
Description
===========
When 'awstats.pl' is run as a CGI script, it fails to validate specific
inputs which are used in a Perl open() function call.
Impact
======
A remote attacker could supply AWStats malicious input, potentially
allowing the execution of arbitrary code with the rights of the web
server.
Workaround
==========
Making sure that AWStats does not run as a CGI script will avoid the
issue, but we recommend that users upgrade to the latest version, which
fixes these bugs.
Resolution
==========
All AWStats users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-www/awstats-6.3"
References
==========
[ 1 ] AWStats ChangeLog
http://awstats.sourceforge.net/docs/awstats_changelog.txt
[ 2 ] iDEFENSE Advisory
http://www.idefense.com/application/poi/display?id=185
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200501-36.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.0
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