Bug 1305536 (CVE-2016-4342) - CVE-2016-4342 php: use of uninitialized pointer in PharFileInfo::getContent
Summary: CVE-2016-4342 php: use of uninitialized pointer in PharFileInfo::getContent
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-4342
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: 1305565
Blocks: 1305564
TreeView+ depends on / blocked
 
Reported: 2016-02-08 14:29 UTC by Adam Mariš
Modified: 2019-09-29 13:44 UTC (History)
14 users (show)

Fixed In Version: php 5.6.18, php 5.5.32
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-10-12 12:38:49 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:2750 0 normal SHIPPED_LIVE Moderate: rh-php56 security, bug fix, and enhancement update 2016-11-15 16:40:02 UTC

Description Adam Mariš 2016-02-08 14:29:33 UTC
A heap corruption vulnerability when parsing tar/zip/phar file with empty content.

Upstream bug:

https://bugs.php.net/bug.php?id=71354

Upstream patch:

https://git.php.net/?p=php-src.git;a=commitdiff;h=13ad4d3e971807f9a58ab5933182907dc2958539

Comment 1 Adam Mariš 2016-02-08 15:13:15 UTC
Created php tracking bugs for this issue:

Affects: fedora-all [bug 1305565]

Comment 2 Andrej Nemec 2016-05-02 14:31:16 UTC
CVE assignment:

http://seclists.org/oss-sec/2016/q2/163

Comment 4 Tomas Hoger 2016-10-12 12:38:49 UTC
This issue is triggered by a specially-crafted Tar format Phar files.  Phar files are distribution format for PHP applications (similar to Java Jar format) and their content is typically executed on the server.  Malicious Phar archive can therefore execute code on the system without exploiting any parsing issues.

If Phar extension is not used, it can be disabled by commenting out the following line:

  extension=phar.so

in /etc/php.d/phar.ini to prevent loading of the extension.

Comment 5 errata-xmlrpc 2016-11-15 11:49:21 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


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