Bug 1412686 (CVE-2016-7479)

Summary: CVE-2016-7479 php: Use-after-free vulnerability when resizing the 'properties' hash table of a serialized object
Product: [Other] Security Response Reporter: Adam Mariš <amaris>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: abhgupta, fedora, hhorak, jorton, rcollet, sardella, tiwillia, webstack-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: php 7.0.15, php 7.1.1 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 03:05:27 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1412647, 1554540    
Bug Blocks:    

Description Adam Mariš 2017-01-12 14:48:01 UTC 
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.

Upstream bug (private as of now):

https://bugs.php.net/bug.php?id=73092

External Reference:

https://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf
Comment 1 Adam Mariš 2017-01-12 15:02:47 UTC 
Created php tracking bugs for this issue:

Affects: fedora-all [bug 1412647]
Comment 3 errata-xmlrpc 2018-05-03 05:05:57 UTC 
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 7.3 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS

Via RHSA-2018:1296 https://access.redhat.com/errata/RHSA-2018:1296