Bug 1175718 (CVE-2014-8142) - CVE-2014-8142 php: use after free vulnerability in unserialize()
Summary: CVE-2014-8142 php: use after free vulnerability in unserialize()
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2014-8142
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1176156 1204765 1204766 1205733 1205734
Blocks: 1175678 1210213
TreeView+ depends on / blocked
 
Reported: 2014-12-18 13:15 UTC by Tomas Hoger
Modified: 2021-02-17 05:53 UTC (History)
7 users (show)

Fixed In Version: php 5.4.36, php 5.5.20, php 5.6.4
Doc Type: Bug Fix
Doc Text:
A flaws was discovered in the way PHP performed object unserialization. Specially crafted input processed by the unserialize() function could cause a PHP application to crash or, possibly, execute arbitrary code.
Clone Of:
Environment:
Last Closed: 2015-07-09 21:41:25 UTC

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2015:1053 0 normal SHIPPED_LIVE Moderate: php55 security and bug fix update 2015-06-04 12:06:06 UTC
Red Hat Product Errata RHSA-2015:1066 0 normal SHIPPED_LIVE Important: php54 security and bug fix update 2015-06-05 15:42:20 UTC
Red Hat Product Errata RHSA-2015:1135 0 normal SHIPPED_LIVE Important: php security and bug fix update 2015-06-23 12:11:40 UTC

Description Tomas Hoger 2014-12-18 13:15:06 UTC 
A use-after-free flaw was found in PHP unserialize().  An untrusted input could cause PHP interpreter to crash or, possibly, execute arbitrary code when processed using unserialize().

Upstream bug (currently private):

https://bugs.php.net/bug.php?id=68594

Upstream commit:

http://git.php.net/?p=php-src.git;a=commitdiff;h=630f9c33c23639de85c3fd306b209b538b73b4c9
http://git.php.net/?p=php-src.git;a=commitdiff;h=53f129a44d3c4ec0fae57993b9ae2f6cb48973cc

Note that unserialize() is unsafe for use on untrusted inputs, as is documented in the PHP manual for the function:

http://php.net/manual/en/function.unserialize.php
Comment 2 Vincent Danen 2014-12-19 15:02:35 UTC 
Statement:

This issue did not affect the versions of php as shipped with Red Hat Enterprise Linux 5 and 6 or the versions of php53 as shipped with Red Hat Enterprise Linux 5.

The PHP manual documents that using unserialize() on untrusted user input is unsafe and not recommended.
Comment 3 Vincent Danen 2014-12-19 15:05:28 UTC 
Created php tracking bugs for this issue:

Affects: fedora-all [bug 1176156]
Comment 4 Fedora Update System 2014-12-29 09:58:46 UTC 
php-5.5.20-2.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 5 Fedora Update System 2014-12-29 09:59:32 UTC 
php-5.6.4-2.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2014-12-29 10:03:19 UTC 
php-5.5.20-2.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 7 Vincent Danen 2015-02-09 14:30:16 UTC 
Note that upstream did not properly correct this flaw, and CVE-2015-0231 was assigned to that incomplete fix (see bug #1185397) so any future updates to fix this must take this into account to ensure that this CVE is properly fixed.
Comment 11 errata-xmlrpc 2015-06-04 08:03:24 UTC 
This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 6
  Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUS

Via RHSA-2015:1066 https://rhn.redhat.com/errata/RHSA-2015-1066.html
Comment 12 errata-xmlrpc 2015-06-04 08:06:45 UTC 
This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 6
  Red Hat Software Collections for Red Hat Enterprise Linux 6.6 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 6.5 EUS

Via RHSA-2015:1053 https://rhn.redhat.com/errata/RHSA-2015-1053.html
Comment 13 errata-xmlrpc 2015-06-23 08:11:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:1135 https://rhn.redhat.com/errata/RHSA-2015-1135.html
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