Bug 1323074 (CVE-2015-8835)

Summary: CVE-2015-8835 php: type confusion issue in Soap Client call() method
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
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, jialiu, jokerman, jorton, kseifried, lmeyer, mmaslano, mmccomas, rcollet, tiwillia, webstack-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: php 5.4.44, php 5.5.28, php 5.6.12, php 7.0.4 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-06-16 10:54:29 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:    
Bug Blocks: 1315348    

Description Andrej Nemec 2016-04-01 08:09:44 UTC 
SoapClient's __call() method suffers from multiple type confusion issues which could be used to exfiltrate arbitrary memory contents or cause crashe via unsafe unserialize() calls.

A new CVE was assigned for the first part of the following bug:

https://bugs.php.net/bug.php?id=70081

References:

http://seclists.org/oss-sec/2016/q1/695

Upstream fix:

https://git.php.net/?p=php-src.git;a=commitdiff;h=c96d08b27226193dd51f2b50e84272235c6aaa69
Comment 1 Tomas Hoger 2016-06-16 10:54:29 UTC 
This issue happens when untrusted input is unserialized.  Doing so it documented as being unsafe:

  http://php.net/manual/en/function.unserialize.php

  Do not pass untrusted user input to unserialize(). Unserialization can
  result in code being loaded and executed due to object instantiation and
  autoloading, and a malicious user may be able to exploit this. Use a safe,
  standard data interchange format such as JSON (via json_decode() and
  json_encode()) if you need to pass serialized data to the user.

Affected code is part of the SOAP extension.  In Red Hat products, this extension is packaged separately in the php-soap subpackages.  Systems without php-soap installed can not be affected by this issue.  Removal of the package can be used to mitigate the issue on systems that do not require SOAP extension.
Comment 2 Tomas Hoger 2016-06-16 11:19:54 UTC 
*** Bug 1315344 has been marked as a duplicate of this bug. ***
Comment 3 errata-xmlrpc 2016-11-15 11:50:17 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