It was found that crafted input to xml_parse_into_struct() function can cause segmentation fault. Upstream bug: https://bugs.php.net/bug.php?id=72099 Upstream patch: https://git.php.net/?p=php-src.git;a=commit;h=1248079be837808da4c97364fb3b4c96c8015fbf
Created php tracking bugs for this issue: Affects: fedora-all [bug 1332882]
CVE assignment: http://seclists.org/oss-sec/2016/q2/259
php-5.6.21-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
php-5.6.21-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
It only seems possible to trigger this problem if xml_parse_into_struct() is called with parser that was previously used for XML parsing. As XML parser is not safe to be reused for multiple XML parsings (parser needs to be freed and new created if multiple XML inputs need to be parsed), this flaw is unlikely to affect properly written PHP scripts. This issue is in the xml extension. In Red Hat products, this extension is packaged separately in php-xml sub-RPM. Systems without that package installed can not be affected by this issue.
This issue has been addressed in the following products: Red Hat Software Collections for Red Hat Enterprise Linux 6 Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7 Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS Via RHSA-2016:2750 https://rhn.redhat.com/errata/RHSA-2016-2750.html