Firebird is a multi-platform, open source relational database.
The vulnerability is caused due to an error when processing requests from remote clients.
A remote attacker could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition.
There is no known workaround at this time.
All Firebird users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose
">=dev-db/firebird-2.5.3.26780.0-r3"
NOTE: Firebird package was moved to the testing branch (unstable) of Gentoo. There is currently no stable version of Firebird, and there will be no further GLSAs for this package.