(Conectiva Issues Fix) Webalizer Buffer Overflow Allows Remote Users to Execute Arbitrary Code on the Server via Reverse DNS Lookups
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SecurityTracker Alert ID: 1004171 |
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SecurityTracker URL: http://securitytracker.com/id/1004171
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CVE Reference:
GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Apr 27 2002
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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): 2.01-09, 2.01-06
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Description:
A buffer overflow vulnerability was reported in Webalizer, a log file analysis tool. A remote user can cause arbitrary code to be executed on the server.
If Webalizer is configured to perform reverse DNS lookups (which is apparently not the default configuration), a remote user with control over a DNS service can cause arbitrary code to be executed by Webalizer. No further details were provided.
The vendor has reportedly been notified.
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Impact:
A remote user with control over a DNS server can cause Webalizer to execute arbitrary code on the Webalizer host when performing a reverse DNS lookup.
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Solution:
The vendor has released a fix.
ftp://atualizacoes.conectiva.com.br/5.0/SRPMS/webalizer-2.01.10-4U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/webalizer-2.01.10-4U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/webalizer-doc-2.01.10-4U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/SRPMS/webalizer-2.01.10-4U51_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/webalizer-2.01.10-4U51_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/webalizer-doc-2.01.10-4U51_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/webalizer-2.01.10-4U60_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/webalizer-2.01.10-4U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/webalizer-doc-2.01.10-4U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/webalizer-2.01.10-4U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/webalizer-2.01.10-4U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/webalizer-doc-2.01.10-4U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/webalizer-2.01.10-4U8_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/webalizer-2.01.10-4U8_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/webalizer-doc-2.01.10-4U8_1cl.i386.rpm
Users of Conectiva Linux version 6.0 or higher may use apt to perform upgrades of RPM packages:
- add the following line to /etc/apt/sources.list if it is not there yet
(you may also use linuxconf to do this):
rpm [cncbr] ftp://atualizacoes.conectiva.com.br 6.0/conectiva updates
(replace 6.0 with the correct version number if you are not running CL6.0)
- 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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Vendor URL: www.mrunix.net/webalizer/ (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, 26 Apr 2002 13:55:58 -0300
Subject: [conectiva-updates] [CLA-2002:476] Conectiva Linux Security Announcement - webalizer
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
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CONECTIVA LINUX SECURITY ANNOUNCEMENT
- --------------------------------------------------------------------------
PACKAGE : webalizer
SUMMARY : Buffer overflow
DATE : 2002-04-26 13:55:00
ID : CLA-2002:476
RELEVANT
RELEASES : 5.0, 5.1, 6.0, 7.0, 8
- -------------------------------------------------------------------------
DESCRIPTION
"webalizer"[1][4] is a program which analyzes web server log files
and generates lots of useful statistics.
Spybreak reported[2] a buffer overflow vulnerability[3] in the DNS
resolver code. This flaw could possibly be exploited by a remote
attacker in control of a DNS server which would be queried by the
webalizer program.
Webalizer in Conectiva Linux is not executed by default, it is
necessary for the user to configure and enable a cron job for it to
run.
SOLUTION
It is recommended that all webalizer users upgrade their packages.
REFERENCES
1. http://www.mrunix.net/webalizer/
2. http://online.securityfocus.com/archive/1/267551
3. http://online.securityfocus.com/bid/4504
4. http://www.mrunix.net/webalizer/news.html
DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/5.0/SRPMS/webalizer-2.01.10-4U50_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/webalizer-2.01.10-4U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/webalizer-doc-2.01.10-4U50_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/SRPMS/webalizer-2.01.10-4U51_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/webalizer-2.01.10-4U51_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/webalizer-doc-2.01.10-4U51_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/webalizer-2.01.10-4U60_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/webalizer-2.01.10-4U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/webalizer-doc-2.01.10-4U60_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/webalizer-2.01.10-4U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/webalizer-2.01.10-4U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/webalizer-doc-2.01.10-4U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/webalizer-2.01.10-4U8_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/webalizer-2.01.10-4U8_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/webalizer-doc-2.01.10-4U8_1cl.i386.rpm
ADDITIONAL INSTRUCTIONS
Users of Conectiva Linux version 6.0 or higher may use apt to perform
upgrades of RPM packages:
- add the following line to /etc/apt/sources.list if it is not there yet
(you may also use linuxconf to do this):
rpm [cncbr] ftp://atualizacoes.conectiva.com.br 6.0/conectiva updates
(replace 6.0 with the correct version number if you are not running CL6.0)
- 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
- -------------------------------------------------------------------------
All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en
- -------------------------------------------------------------------------
subscribe: conectiva-updates-subscribe@papaleguas.conectiva.com.br
unsubscribe: conectiva-updates-unsubscribe@papaleguas.conectiva.com.br
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