Michael Tremer

IPFire 2.19 - Core Update 101 is available for testing
by Michael Tremer, April 27, 2016

Hello,

just a few days after the release of IPFire 2.19 – Core Update 100, we uploaded the upcoming Core Update to the testing tree and would like to ask all of you to take part in testing it.

This update contains various security fixes, bug fixes and we would like to release it as soon as possible. These are the changes in detail:

Cross-Site-Scripting Vulnerability and Remote Code Execution in the IPFire Web User Interface

Yann Cam, an independent security researcher, discovered to vulnerabilities in the IPFire Web User interface that could be used in some circumstances. In the ipinfo.cgi file, a cross-site scripting attack could be executed on logged in users and in two more CGI files (proxy.cgi and chpasswd.cgi), a remote code execution vulnerability was found which allowed attackers to use the aforementioned cross-site scripting attack to execute shell commands as an unprivileged user on the IPFire system.

These attacks are only possible to perform on an admin’s computer and only in that instance when the administrator is logged in to the web user interface. Of course we recommend to install this update as soon as possible to close these vulnerabilities.

We would like to thank Yann to look closely at the IPFire code and help us to improve it and we would like to invite everyone who wants to do so as well and report any bugs or security vulnerabilities that they may find.

Security Fixes in other packages

The web proxy squid was patched against a vulnerability filed under CVE-2016-3947 that cannot be exploited in IPFire.

Connection Tracking Issues

On many systems, some protocols that require special care by the connection tracking implementation failed to traverse NAT. These include FTP, SIP and PPTP and where unfortunately not discovered in the testing phase of Core Update 100 before.

Those connection tracking helpers are now enabled by default on all migrated systems.

Misc.

Add-ons

New packages

Updated packages

Please note the recent security updates in the samba package.


As always, we would like to ask all users to participate in testing which will highly improve the quality of this update. Please report any bugs to our bug tracker and provide any feedback on our development mailing list.


Posted: April 27, 2016 • 1680 views