[CLA-2001:427] Conectiva Linux Security Announcement - mod_auth_pgsql

2001-09-2800:00:00

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CONECTIVA LINUX SECURITY ANNOUNCEMENT

PACKAGE : mod_auth_pgsql
SUMMARY : Remote vulnerability allows an attacker to bypass authentication
DATE : 2001-09-28 11:26:00
ID : CLA-2001:427
RELEVANT
RELEASES : 4.0, 4.0es, 4.1, 4.2, 5.0, prg graficos, ecommerce, 5.1, 6.0, 7.0

DESCRIPTION
"mod_auth_mysql" is an authentication module for apache which
authenticates users against a PostgreSQL database.
RUS-CERT discovered a vulnerability[1][3] in several Apache
authentication modules which use SQL databases to retrieve user
information. This vulnerability allows a remote attacker to change
the query that the module sends to the SQL server and circumvent the
authentication process.
This vulnerability is still present in the 0.9.6 version in a
slightly different fashion:

Username: '';; select ''bla
Password: bla

The author has been notified and released version 0.9.9 on Sep 25th
to address this problem[2].
Additionally, this is also a bugfix update for this package, which
wasn't linked against the PostgreSQL libraries in our previous
releases.

SOLUTION
It is recommended that all mod_auth_pgsql users upgrade the package.
All versions released here, even being older, have patches to address
this problem. The update for the 0.8 version also contains the
snprintf() patches from Erik Rossen.

IMPORTANT: it is necessary to restart the Apache web server after
updating these packages.

REFERENCES

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

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: [email protected]
unsubscribe: [email protected]
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