Debian Security Advisory

DLA-1942-2 phpbb3 -- LTS security update

Date Reported:
22 Dec 2019
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2019-13776, CVE-2019-16993.
More information:

This is a follow-up to DLA-1942-1.

There was some confusion about the correct fix for CVE-2019-13776.

The correct announcement for this DLA should have been:

Package : phpbb3 Version : 3.0.12-5+deb8u4 CVE ID : CVE-2019-13776 CVE-2019-16993

  • CVE-2019-16993

    In phpBB, includes/acp/acp_bbcodes.php had improper verification of a CSRF token on the BBCode page in the Administration Control Panel. An actual CSRF attack was possible if an attacker also managed to retrieve the session id of a reauthenticated administrator prior to targeting them.

  • CVE-2019-13776

    phpBB allowed the stealing of an Administration Control Panel session id by leveraging CSRF in the Remote Avatar feature. The CSRF Token Hijacking lead to stored XSS.

For Debian 8 Jessie, these problems have been fixed in version 3.0.12-5+deb8u4.

We recommend that you upgrade your phpbb3 packages.

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