-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 cPanel Security Team - CVE-2016-3714 ImageMagick Background Information On Tuesday, May 3 2016, ImageMagick announced a vulnerability in all versions of the ImageMagick software. ImageMagick is a software package commonly used by web services to process images. Impact One of the reported vulnerabilities can potentially be exploited for remote code execution (RCE). Releases ImageMagick has not released a fix, but plans to publish a new version of ImageMagic with the fixes soon. cPanel normally releases all builds at once in order to limit the ability to reverse engineer fixes. However, this vulnerability is already wildly known and we have seen reports of its use. In this instance, we plan to release builds as soon as they become available. At this time the following builds are available: 11.56 11.56.0.13 11.54 11.54.0.23 EDGE 11.55.9999.193 CURRENT 11.56.0.13 RELEASE 11.56.0.13 STABLE 11.54.0.23 How to determine if your server is up to date The updated RPMs provided by cPanel will contain a changelog entry with a CVE number. To view this changelog entry run the following command: rpm -q --changelog cpanel-ImageMagick | grep CVE-2016-3714 The output should resemble below: - - Apply workaround for CVE-2016-3714 What to do if you are not up to date If your server is not running one of the above versions, update immediately. To upgrade your server, navigate to WHM's Upgrade to Latest Version interface (Home >> cPanel >> Upgrade to Latest Version) and click 'Click to Upgrade'. To upgrade cPanel from the command line run the following commands: /scripts/upcp /scripts/check_cpanel_rpms --fix --long-list To verify the new cpanel-ImageMagick RPM was installed run the following command: rpm -q --changelog cpanel-ImageMagick | grep CVE-2016-3714 The output should resemble the following: - - Apply workaround for CVE-2016-3714 Manual mitigation We will publish builds for 11.52 and 11.50 as soon as they become available. For 11.52 and 11.50, you can manually mitigate this vulnerability with the following instructions. Open the following file: /usr/local/cpanel/3rdparty/etc/ImageMagick-6/policy.xml Update the file to match the policy example below to disable the EPHEMERAL, URL, HTTPS, MVG, and MSL coders: How to mitigate the vulnerability for other ImageMagick installations If you have a local installation of ImageMagick, we recommend that you use a policy file to disable the vulnerable ImageMagick coders. We will attempt use the WHM Autofixer to update the policy.xml file. The global policy for ImageMagick is usually found in the /etc/ImageMagick/policy.xml file. The following policy.xml example disables the coders EPHEMERAL, URL, HTTPS, MVG, and MSL: CVE: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3714 Disclosure: https://www.imagemagick.org/discourse-server/viewtopic.php?f=4&t=29588 -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org iQIcBAEBCgAGBQJXKaDRAAoJEJUhvtyr2U3fhYkQAK1PTeIWb4o+bYmi8ZSjCXy+ L5iFLQGg8/psdvstxaYkwzJk0QmnnqO4E36RvQq6QsnFhURDqYvoOoRwUybSDbaR KMClzAavS9GFJjdcU6j5CMrmGgA/o0whUSJOYOZ9MawHRE44qWpC0Sibzsng8/Q8 EN+DPIemhEJFpww3doMGB/d+uSsNoX+XFZOlgNYQkzN/NpXzGzIHGpHyLgr0vdxC HqtPfyFnnL45oqyghQQwF3Bwxtn7qr9dGXvuabGbas0c4hN8FwudLXOUziSSHN8Z qvWcSnSCLiqAVM5V+3nynl8z7NIllJGARBUpVOxqq0Kd6O95/wtn+OGc7LBUOwhQ Qciv/HNiA090DOuUynV8qdtR/SgkMrkUXNFSCYb55l+KFHuQO8rCiJQGWA20YiQ8 pxSiC6CnW8059JVmSQdw+x09T2yutc6S1tM+awdetCUMI9VyUFQQj3nOeKoA0aoj 6syj5jhzZwqu4bptCJQm1TPZtcbKMN55gIZki6ns6SMf010wByT7+VTHvJnYifOF Uv7tEID5h8xclTKP7/oL/I5q+zYwTZzdgxmp5k2NrIPg176GxjhWv+whfmOgZrPN Uaaa+btJxlhfzGTKEJx/Gj6U7xKHboy86eAy4SX4KE/ALe15fACOoBkz8R774tqn eS0zsrlB2egaEPmHf1Vl =NLiz -----END PGP SIGNATURE-----