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Firebird: Data disclosure


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200805-06 / firebird
Release Date May 09, 2008
Latest Revision May 09, 2008: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
dev-db/firebird < >= All supported architectures

Related bugreports: #216158


Firebird allows remote connections to the administrative account without verifying credentials.

2.  Impact Information


Firebird is a multi-platform, open source relational database.


Viesturs reported that the default configuration for Gentoo's init script ("/etc/conf.d/firebird") sets the "ISC_PASSWORD" environment variable when starting Firebird. It will be used when no password is supplied by a client connecting as the "SYSDBA" user.


A remote attacker can authenticate as the "SYSDBA" user without providing the credentials, resulting in complete disclosure of all databases except for the user and password database (security2.fdb).

3.  Resolution Information


There is no known workaround at this time.


All Firebird users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-db/firebird-"

Note: /etc/conf.d is protected by Portage as a configuration directory. Do not forget to use "etc-update" or "dispatch-conf" to overwrite the "firebird" configuration file, and then restart Firebird.

4.  References


Page updated May 09, 2008

Summary: This is a Gentoo Linux Security Advisory

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