Use After Free Affecting php5 package, versions <5.5.9+dfsg-1ubuntu4.21
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1404-PHP5-394597
- published12 Jan 2017
- disclosed12 Jan 2017
Introduced: 12 Jan 2017
CVE-2016-7479 (opens in a new tab)How to fix?
Upgrade Ubuntu:14.04 php5 to version 5.5.9+dfsg-1ubuntu4.21 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream php5 package and not the php5 package as distributed by Ubuntu.
See How to fix? for Ubuntu:14.04 relevant fixed versions and status.
In all versions of PHP 7, during the unserialization process, resizing the 'properties' hash table of a serialized object may lead to use-after-free. A remote attacker may exploit this bug to gain arbitrary code execution.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-7479
- https://security-tracker.debian.org/tracker/CVE-2016-7479
- http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php-7
- http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf
- https://bugs.php.net/bug.php?id=73092
- https://www.youtube.com/watch?v=LDcaPstAuPk
- https://security.netapp.com/advisory/ntap-20180112-0001/
- https://access.redhat.com/errata/RHSA-2018:1296
- http://www.securityfocus.com/bid/95151
- http://www.securitytracker.com/id/1037659