Debian Security Advisory

DLA-2824-1 firebird3.0 -- LTS security update

Date Reported:
20 Nov 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2017-11509.
More information:

An authenticated remote attacker can execute arbitrary code in Firebird, a relational database based on InterBase 6.0, by executing a malformed SQL statement. The only known solution is to disable external UDF libraries from being loaded. In order to achieve this, the default configuration has changed to UdfAccess=None. This will prevent the fbudf module from being loaded, but may also break other functionality relying on modules.

For Debian 9 stretch, this problem has been fixed in version

We recommend that you upgrade your firebird3.0 packages.

For the detailed security status of firebird3.0 please refer to its security tracker page at:

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: