Bug 1305536 – CVE-2016-4342 php: use of uninitialized pointer in PharFileInfo::getContent

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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

Status:	CLOSED ERRATA

Aliases:	CVE-2016-4342

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20160112,repor...
Keywords:	Security

Depends On:	1305565
Blocks:	1305564
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Reported:	2016-02-08 09:29 EST by Adam Mariš
Modified:	2016-11-15 09:02 EST (History)
CC List:	14 users (show)

See Also:
Fixed In Version:	php 5.6.18, php 5.5.32
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-10-12 08:38:49 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:2750	normal	SHIPPED_LIVE	Moderate: rh-php56 security, bug fix, and enhancement update	2016-11-15 11:40:02 EST

Groups: None (edit)

Description Adam Mariš 2016-02-08 09:29:33 EST

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 10:13:15 EST

Created php tracking bugs for this issue:

Affects: fedora-all [bug 1305565]

Comment 2 Andrej Nemec 2016-05-02 10:31:16 EDT

CVE assignment:

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

Comment 4 Tomas Hoger 2016-10-12 08:38:49 EDT

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 06:49:21 EST

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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