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UNIRAS Brief - 59/04 - Conectiva Security Bulletin - Insecure handling of temporary files



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 59/04 dated 06.02.04  Time: 15:05
 UNIRAS is part of NISCC(National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
=====

Conectiva Security Bulletin:

Insecure handling of temporary files.

Detail
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GNU libtool consists of a set of shell scripts used to build shared libraries.
Joseph S. Myers and Stefan Nordhausen independently found[1,2] a vulnerability[3] 
in the way the ltmain.sh script (which is part of the libtool package) creates 
temporary directories for its use.

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CONECTIVA LINUX SECURITY ANNOUNCEMENT 
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PACKAGE   : libtool
SUMMARY   : Insecure handling of temporary files
DATE      : 2004-02-05 18:11:00
ID        : CLA-2004:811
RELEVANT
RELEASES  : 8, 9

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DESCRIPTION
 GNU libtool consists of a set of shell scripts used to build shared
 libraries.
 
 Joseph S. Myers and Stefan Nordhausen independently found[1,2] a
 vulnerability[3] in the way the ltmain.sh script (which is part of
 the libtool package) creates temporary directories for its use.
 
 A local attacker could exploit this vulnerability to change/delete
 arbitrary files in the system on behalf of the user who is calling
 the script.
 
 The vulnerability has been fixed in the 1.5.2 version of libtool.
 This update keeps the original versions distributed with Conectiva
 Linux, fixing the vulnerability by using mktemp to securely create
 the directories.


SOLUTION
 All developers using libtool should upgrade.
 
 
 REFERENCES
 1.http://www.securityfocus.com/archive/1/352333
 2.http://www.geocrawler.com/mail/msg.php3?msg_id=3438808&list=405
 3.http://www.securityfocus.com/bid/9530


UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/8/RPMS/libtool-1.4.2-4U80_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/libtool-1.4.2-4U80_2cl.src.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/libtool-1.4.3-21152U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/SRPMS/libtool-1.4.3-21152U90_1cl.src.rpm


ADDITIONAL INSTRUCTIONS
 The apt tool can be used to perform RPM packages upgrades:

 - run:                 apt-get update
 - after that, execute: apt-get upgrade

 Detailed instructions reagarding the use of apt and upgrade examples 
 can be found at http://distro.conectiva.com.br/atualizacoes/#apt?idioma=en

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All packages are signed with Conectiva's GPG key. The key and instructions
on how to import it can be found at 
http://distro.conectiva.com.br/seguranca/chave/?idioma=en
Instructions on how to check the signatures of the RPM packages can be
found at http://distro.conectiva.com.br/seguranca/politica/?idioma=en

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All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en

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Copyright (c) 2004 Conectiva Inc.
http://www.conectiva.com

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For additional information or assistance, please contact the HELP Desk by 
telephone or Not Protectively Marked information may be sent via EMail to:
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Outside of Office Hours:
On Call Duty Officer:
Tel: +44 (0) 20 7821 1330 and follow the prompts

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UNIRAS wishes to acknowledge the contributions of Conectiva for the information
contained in this Briefing. 
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This Briefing contains the information released by the original author. Some 
of the information may have changed since it was released. If the vulnerability 
affects you, it may be prudent to retrieve the advisory from the canonical site 
to ensure that you receive the most current information concerning that problem.

Reference to any specific commercial product, process, or service by trade 
name, trademark manufacturer, or otherwise, does not constitute or imply 
its endorsement, recommendation, or favouring by UNIRAS or NISCC.  The views 
and opinions of authors expressed within this notice shall not be used for 
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Neither UNIRAS or NISCC shall also accept responsibility for any errors 
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not be liable for any loss or damage whatsoever, arising from or in connection 
with the usage of information contained within this notice.

UNIRAS is a member of the Forum of Incident Response and Security Teams (FIRST) 
and has contacts with other international Incident Response Teams (IRTs) in 
order to foster cooperation and coordination in incident prevention, to prompt 
rapid reaction to incidents, and to promote information sharing amongst its 
members and the community at large. 
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<End of UNIRAS Briefing>
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