Bug 1404726 (CVE-2016-9934) - CVE-2016-9934 php: NULL Pointer Dereference in WDDX Packet Deserialization with PDORow
Summary: CVE-2016-9934 php: NULL Pointer Dereference in WDDX Packet Deserialization wi...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2016-9934
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1404737 1554854
Blocks: 1404738
TreeView+ depends on / blocked
 
Reported: 2016-12-14 13:55 UTC by Adam Mariš
Modified: 2019-09-29 14:02 UTC (History)
14 users (show)

Fixed In Version: php 5.6.28, php 7.0.13, php 7.1.0
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2017-02-21 09:02:39 UTC


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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:1296 0 None None None 2018-05-03 05:05:36 UTC

Description Adam Mariš 2016-12-14 13:55:16 UTC
Null pointer dereference in WDDX Packet Deserialization with PDORow object was found.

Upstream bug:

https://bugs.php.net/bug.php?id=73331

Upstream patch:

https://github.com/php/php-src/commit/6045de69c7dedcba3eadf7c4bba424b19c81d00d

CVE assignment:

http://seclists.org/oss-sec/2016/q4/658

Comment 1 Adam Mariš 2016-12-14 14:18:56 UTC
Created php tracking bugs for this issue:

Affects: fedora-all [bug 1404737]

Comment 2 Cedric Buissart 2017-02-21 09:01:58 UTC
This issue happens when untrusted input is unserialized. Doing so is documented as being unsafe: 
http://php.net/manual/en/function.wddx-deserialize.php#refsect1-function.wddx-deserialize-notes 

Warning
Do not pass untrusted user input to wddx_deserialize(). 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.

Comment 4 errata-xmlrpc 2018-05-03 05:05:26 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


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