(Conectiva Issues Fix) 'file' Utility Buffer Overflow May Let Local Users Gain Elevated Privileges in Certain Cases
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SecurityTracker Alert ID: 1006488 |
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SecurityTracker URL: http://securitytracker.com/id/1006488
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CVE Reference:
CAN-2003-0102
(Links to External Site)
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Date: Apr 4 2003
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Impact:
Execution of arbitrary code via local system, User access via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 3.39 and prior versions
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Description:
A buffer overflow vulnerability was reported in file(1). A local user may be able to get a local user to execute arbitrary code.
iDEFENSE reported that the flaw resides in a doshn() function call in the 'readelf.c' file. If a local user can get another target local user to invoke the file(1) command to examine a specially crafted malicious file, arbitrary code may be executed with the privileges of the target user.
A demonstration exploit transcript is provided in the Source Message.
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Impact:
A local user may be able to cause arbitrary code to be executed by a target user with the privileges of the target user.
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Solution:
Conectiva has released a fix.
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/file-3.41-1U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/file-3.41-1U60_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/file-3.41-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/file-3.41-1U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/file-3.41-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/file-3.41-1U80_1cl.src.rpm
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Cause:
Boundary error
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Underlying OS:
Linux (Conectiva)
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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: Fri, 4 Apr 2003 18:58:35 -0300
Subject: [conectiva-updates] [CLA-2003:617] Conectiva Security Announcement - file
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- --------------------------------------------------------------------------
CONECTIVA LINUX SECURITY ANNOUNCEMENT
- --------------------------------------------------------------------------
PACKAGE : file
SUMMARY : Buffer overflow vulnerability
DATE : 2003-04-04 18:58:00
ID : CLA-2003:617
RELEVANT
RELEASES : 6.0, 7.0, 8
- -------------------------------------------------------------------------
DESCRIPTION
The file command is used to identify a particular file according to
the type of data contained in it.
iDefense has found a buffer overflow vulnerability[1] in the file
command. This vulnerability can be triggered by the use of specially
crafted files.
Since file is a very common utility used by many subsystems (like the
printing subsystem), attackers can exploit this vulnerability to
remotely or locally compromise system security.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2003-0102 to this issue[2].
SOLUTION
All users should upgrade.
REFERENCES:
1.http://www.idefense.com/advisory/03.04.03.txt
2.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0102
UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/file-3.41-1U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/file-3.41-1U60_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/file-3.41-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/file-3.41-1U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/file-3.41-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/file-3.41-1U80_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
- -------------------------------------------------------------------------
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
- -------------------------------------------------------------------------
All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en
- -------------------------------------------------------------------------
Copyright 2003 (c) Conectiva Inc.
http://www.conectiva.com
- -------------------------------------------------------------------------
subscribe: conectiva-updates-subscribe@papaleguas.conectiva.com.br
unsubscribe: conectiva-updates-unsubscribe@papaleguas.conectiva.com.br
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