{"id":"UBUNTU-CVE-2016-7480","details":"The SplObjectStorage unserialize implementation in ext/spl/spl_observer.c in PHP before 7.0.12 does not verify that a key is an object, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized memory access) via crafted serialized data.","modified":"2025-07-16T08:19:45.004044Z","published":"2017-01-11T07:59:00Z","withdrawn":"2025-07-18T16:43:37Z","upstream":["CVE-2016-7480"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-7480"},{"type":"REPORT","url":"http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php-7"},{"type":"REPORT","url":"http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf"},{"type":"REPORT","url":"http://php.net/ChangeLog-7.php"},{"type":"REPORT","url":"https://www.youtube.com/watch?v=LDcaPstAuPk"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-7480"}],"affected":[{"package":{"name":"php5","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/php5@5.5.9+dfsg-1ubuntu4.20?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.5.9+dfsg-1ubuntu4.20"}]}],"versions":["5.5.3+dfsg-1ubuntu2","5.5.3+dfsg-1ubuntu3","5.5.6+dfsg-1ubuntu1","5.5.6+dfsg-1ubuntu2","5.5.8+dfsg-2ubuntu1","5.5.9+dfsg-1ubuntu1","5.5.9+dfsg-1ubuntu2","5.5.9+dfsg-1ubuntu3","5.5.9+dfsg-1ubuntu4","5.5.9+dfsg-1ubuntu4.1","5.5.9+dfsg-1ubuntu4.2","5.5.9+dfsg-1ubuntu4.3","5.5.9+dfsg-1ubuntu4.4","5.5.9+dfsg-1ubuntu4.5","5.5.9+dfsg-1ubuntu4.6","5.5.9+dfsg-1ubuntu4.7","5.5.9+dfsg-1ubuntu4.9","5.5.9+dfsg-1ubuntu4.11","5.5.9+dfsg-1ubuntu4.12","5.5.9+dfsg-1ubuntu4.13","5.5.9+dfsg-1ubuntu4.14","5.5.9+dfsg-1ubuntu4.16","5.5.9+dfsg-1ubuntu4.17","5.5.9+dfsg-1ubuntu4.19"],"ecosystem_specific":{"binaries":[{"binary_name":"libapache2-mod-php5","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"libapache2-mod-php5-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"libapache2-mod-php5filter","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"libapache2-mod-php5filter-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"libphp5-embed","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"libphp5-embed-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php-pear","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-cgi","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-cgi-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-cli","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-cli-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-common","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-common-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-curl","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-curl-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-dbg","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-dev","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-dev-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-enchant","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-enchant-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-fpm","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-fpm-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-gd","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-gd-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-gmp","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-gmp-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-intl","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-intl-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-ldap","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-ldap-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-mysql","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-mysql-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-mysqlnd","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-mysqlnd-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-odbc","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-odbc-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-pgsql","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-pgsql-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-pspell","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-pspell-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-readline","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-readline-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-recode","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-recode-dbgsym","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"php5-snmp","binary_version":"5.5.9+dfsg-1ubuntu4.20"},{"binary_name":"ph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