Bug 1374704 – CVE-2016-7128 php: Memory Leakage In exif_process_IFD_in_TIFF

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Bug 1374704 - (CVE-2016-7128) CVE-2016-7128 php: Memory Leakage In exif_process_IFD_in_TIFF

Summary:	CVE-2016-7128 php: Memory Leakage In exif_process_IFD_in_TIFF

Status:	CLOSED ERRATA

Aliases:	CVE-2016-7128

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=20160902,repor...
Keywords:	Security

Depends On:
Blocks:	1374715
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Reported:	2016-09-09 09:01 EDT by Martin Prpič
Modified:	2016-11-15 13:34 EST (History)
CC List:	14 users (show)

See Also:
Fixed In Version:	php 5.6.25, php 7.0.10
Doc Type:	If docs needed, set a value
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-10-20 01:54:42 EDT
Type:	---
Regression:	---
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Documentation:	---
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Verified Versions:
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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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 Martin Prpič 2016-09-09 09:01:59 EDT

The following flaw was found in PHP:

A memory leak flaw was found in PHP's exif_process_IFD_in_TIFF(). An attacker can leak address and then use it to bypass some protection such as PIE, ASLR, etc.

Upstream bug:

https://bugs.php.net/bug.php?id=72627

Upstream patch:

https://github.com/php/php-src/commit/6dbb1ee46b5f4725cc6519abf91e512a2a10dfed?w=1

Comment 1 Huzaifa S. Sidhpurwala 2016-10-20 01:54:42 EDT

Analysis:

Flaw is a result of a lack of validation when offset data is used from a TIFF image to read from the input stream. This may result in a OOB read. You need an attacker controlled malicious tiff image, which needs to be processed by exif_read_data() to trigger this flaw.

Comment 2 errata-xmlrpc 2016-11-15 06:45:29 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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