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AUSCERT External Security Bulletin Redistribution
ESB-2018.3648
[DLA 1593-1] phpbb3 security update
26 November 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: phpbb3
Publisher: Debian
Operating System: Debian GNU/Linux 8
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-19274
Original Bulletin:
https://lists.debian.org/debian-lts-announce/2018/11/msg00029.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.
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Package : phpbb3
Version : 3.0.12-5+deb8u2
CVE ID : CVE-2018-19274
Simon Scannell and Robin Peraglie of RIPS Technologies discovered that
passing an absolute path to a file_exists check in phpBB, a full
featured web forum, allows remote code execution through Object
Injection by employing Phar deserialization when an attacker has access
to the Admin Control Panel with founder permissions.
The fix for this issue resulted in the removal of setting the
ImageMagick path. The GD image library can be used as a replacement
and a new event to generate thumbnails was added, so it is possible to
write an extension that uses a different image library to generate
thumbnails.
For Debian 8 "Jessie", this problem has been fixed in version
3.0.12-5+deb8u2.
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: https://wiki.debian.org/LTS
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