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iDEFENSE Security Advisory 2005-03-02.3

iDEFENSE Security Advisory 2005-03-02.3
Posted Mar 3, 2005
Authored by iDefense Labs, Greg MacManus | Site idefense.com

iDEFENSE Security Advisory 03.02.05 - Remote exploitation of a directory traversal vulnerability in Computer Associates International Inc. License Client can allow attackers create files in arbitrary locations. The vulnerability specifically exists in the handling of the filename used in PUTOLF requests.

tags | advisory, remote, arbitrary
advisories | CVE-2005-0583
SHA-256 | 91475277c8d64cb526f375cd267e3a59760b6b528b6b0b3e126b4fea519944a6

iDEFENSE Security Advisory 2005-03-02.3

Change Mirror Download
Computer Associates License Client PUTOLF Directory Traversal

iDEFENSE Security Advisory 03.02.05
www.idefense.com/application/poi/display?id=212&type=vulnerabilities
March 2, 2005

I. BACKGROUND

The Computer Associates License Client/Server applications provide a
method for CA products to register their licenses on the network. The
License Client and Server are distributed with almost all CA software
distributions. More information about Computer Associates software
products is available from:

http://www3.ca.com/Products/

II. DESCRIPTION

Remote exploitation of a directory traversal vulnerability in Computer
Associates International Inc. License Client can allow attackers create
files in arbitrary locations.

The vulnerability specifically exists in the handling of the filename
used in PUTOLF requests. A PUTOLF request looks something like this:

A0 PUTOLF 1 H A 10 name 2700 Test Data Goes Here<EOM>

By sending a name containing "../../../../" as a prefix, the file is
created 4 directories below where it ordinarily would. The file created
has ".olf" added on the end, and has the contents "Test Data Goes Here".

III. ANALYSIS

Exploitation allows remote attackers to execute arbitrary code under the
privileges of Local System (on Windows platforms) or root (on Linux
platforms). The CA License Client runs by default and is packaged with
almost all CA software.

IV. DETECTION

iDEFENSE has confirmed that CA License Client 0.1.0.15 is vulnerable. It
is suspected that most CA products are running vulnerable versions of
the client and/or server.

V. WORKAROUND

Use a firewall to only allow trusted hosts to connect to the Computer
Associates License Server and Client ports.

VI. VENDOR RESPONSE

A vendor advisory for this issue is available at:

http://supportconnectw.ca.com/public/ca_common_docs/security_notice.asp

Patches for this issue are available at:

http://supportconnectw.ca.com/public/reglic/downloads/licensepatch.asp#a
lp

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CAN-2005-0583 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

02/08/2005 Initial vendor notification
02/09/2005 Initial vendor response
03/02/2005 Coordinated public disclosure

IX. CREDIT

This vulnerability was discovered by Greg MacManus, iDEFENSE Labs.

Get paid for vulnerability research
http://www.idefense.com/poi/teams/vcp.jsp

Free tools, research and upcoming events
http://labs.idefense.com

X. LEGAL NOTICES

Copyright (c) 2005 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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