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             AUSCERT External Security Bulletin Redistribution

                              ESB-2019.3676.2
              [SECURITY] [DLA 1942-2] phpbb3 security update
                              8 October 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           phpbb3
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
                   UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Cross-site Request Forgery -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-16993 CVE-2019-13776 

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2019/09/msg00036.html

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running phpbb3 check for an updated version of the software for 
         their operating system.

Revision History:  October 8 2019: Updated to DLA 1942-2
                   October 1 2019: Initial Release

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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.

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
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