(Conectiva Issues Fix) wvWare Library Buffer Overflow Lets Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1011215 |
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SecurityTracker URL: http://securitytracker.com/id/1011215
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CVE Reference:
CAN-2004-0645
(Links to External Site)
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Date: Sep 11 2004
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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): Tested on 0.7.4, 0.7.5, 0.7.6, and 1.0.0
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Description:
iDEFENSE reported a buffer overflow vulnerability in the wvWare library for reading Microsoft Word files. A remote user can create a specially crafted document to execute arbitrary code on the target system.
It is reported that the overflow occurs in the wvHandleDateTimePicture() function in 'field.c' in the processing of the DateTime field.
The vendor was reportedly notified on June 29, 2004.
Karol Weisek is credited with discovering this flaw.
The original advisory is available at:
http://www.idefense.com/application/poi/display?id=115&type=vulnerabilities
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Impact:
A remote user can cause the library to execute arbitrary code with the privileges of the application that uses the library.
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Solution:
Conectiva has released a fix.
ftp://atualizacoes.conectiva.com.br/10/SRPMS/wv-1.0.0-39238U10_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/10/RPMS/libwv7-1.0.0-39238U10_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/10/RPMS/wv-1.0.0-39238U10_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/10/RPMS/wv-devel-1.0.0-39238U10_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/10/RPMS/wv-devel-static-1.0.0-39238U10_1cl.i386.rpm
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Vendor URL: wvware.sourceforge.net/ (Links to External Site)
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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, 10 Sep 2004 17:35:50 -0300
Subject: [Conectiva-updates] [CLA-2004:863] Conectiva Security Announcement
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- --------------------------------------------------------------------------
CONECTIVA LINUX SECURITY ANNOUNCEMENT
- --------------------------------------------------------------------------
PACKAGE : wv
SUMMARY : Fix for buffer overflow vulnerability
DATE : 2004-09-10 17:35:00
ID : CLA-2004:863
RELEVANT
RELEASES : 10
- -------------------------------------------------------------------------
DESCRIPTION
Wv[1] is a library which allows access to Microsoft Word files.
iDefense[2] discovered[3] a buffer overflow vulnerability[4] in the
wv library which could allow an attacker to execute arbitrary code
with the privileges of the user running the vulnerable application.
SOLUTION
It is recommended that all wv users in Conectiva Linux upgrade their
packages.
IMPORTANT: all applications linked against libwv must be restarted
after the upgrade in order to close the vulnerabilities.
REFERENCES
1.http://wvware.sourceforge.net/
2.http://www.idefense.com/
3.http://www.idefense.com/application/poi/display?id=115&type=vulnerabilities&flashstatus=true
4.http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0645
UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/10/SRPMS/wv-1.0.0-39238U10_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/10/RPMS/libwv7-1.0.0-39238U10_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/10/RPMS/wv-1.0.0-39238U10_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/10/RPMS/wv-devel-1.0.0-39238U10_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/10/RPMS/wv-devel-static-1.0.0-39238U10_1cl.i386.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 regarding 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 (c) 2004 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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