The DateTimeZone constructors are not binary safe. They're parsing the timezone as string, but discard the length when calling timezone_initialize(). Upstream report: https://bugs.php.net/bug.php?id=70277 Upstream patch: http://git.php.net/?p=php-src.git;a=commit;h=bb057498f7457e8b2eba98332a3bad434de4cf12
As state in 70277, this bug is not considered by upstream as a security issue, and have not be fixed in 5.4 / 5.5 (security only branches) Even if trailing char are present (this usually should be not validated user input), there is no risk.
Created php tracking bugs for this issue: Affects: fedora-all [bug 1260760]
php-5.6.13-1.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.
php-5.6.13-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
php-5.6.13-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Not considered to be a security issue, as noted in comment 1 above and in the upstream bug.