Bug 1359822 (CVE-2016-6296)

Summary: CVE-2016-6296 php: Heap buffer overflow vulnerability in simplestring_addn in simplestring.c
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, dmcphers, fedora, hhorak, jialiu, jokerman, jorton, kseifried, lmeyer, mmccomas, rcollet, rdieter, shawn.starr, tiwillia, webstack-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: php 5.5.36, php 5.6.24, php 7.0.9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-09-26 18:23:23 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: 1359837, 1359838    
Bug Blocks: 1359830    

Description Adam Mariš 2016-07-25 13:53:01 UTC 
It was found that String length checks in simplestring_addn in simplestring.c use length as signed integers, which can be used by a malicious php script to cause out of bounds write on the heap.

PHP bug:

https://bugs.php.net/bug.php?id=72606

PHP fix:

http://git.php.net/?p=php-src.git;a=commit;h=e6c48213c22ed50b2b987b479fcc1ac709394caa

CVE assignment:

http://seclists.org/oss-sec/2016/q3/137
Comment 1 Adam Mariš 2016-07-25 14:10:35 UTC 
Created xmlrpc-epi tracking bugs for this issue:

Affects: fedora-all [bug 1359838]
Comment 2 Adam Mariš 2016-07-25 14:10:45 UTC 
Created php tracking bugs for this issue:

Affects: fedora-all [bug 1359837]
Comment 3 errata-xmlrpc 2016-11-15 11:44:17 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 7.2 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