Bug 1351171 (CVE-2016-5770)

Summary:	CVE-2016-5770 php: Int/size_t confusion in SplFileObject::fread
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abhgupta, dmcphers, fedora, hhorak, jialiu, jokerman, jorton, lmeyer, mmccomas, rcollet, tiwillia
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	php 5.5.37, php 5.6.23	Doc Type:	If docs needed, set a value
Doc Text:	A type confusion issue was found in the SPLFileObject fread() function. A remote attacker able to submit a specially crafted input to a PHP application, which uses this function, could use this flaw to execute arbitrary code with the privileges of the user running that PHP application.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-21 00:54:03 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1351180
Bug Blocks:	1351183

Description Andrej Nemec 2016-06-29 11:53:20 UTC

An int/size_t confusion can happen in SplFileObject::fread

Upstream bug:

https://bugs.php.net/bug.php?id=72262

Upstream patch:

http://git.php.net/?p=php-src.git;a=commitdiff;h=7245bff300d3fa8bacbef7897ff080a6f1c23eba

CVE assignment:

http://seclists.org/oss-sec/2016/q2/589

Comment 1 Andrej Nemec 2016-06-29 12:05:13 UTC

Created php tracking bugs for this issue:

Affects: fedora-all [bug 1351180]

Comment 2 Fedora Update System 2016-07-02 15:27:16 UTC

php-5.6.23-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 3 Fedora Update System 2016-07-02 19:22:04 UTC

php-5.6.23-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 4 Fedora Update System 2016-07-02 19:27:23 UTC

php-5.6.23-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 5 Huzaifa S. Sidhpurwala 2016-07-14 07:58:53 UTC

Analysis:

int/size_t size confusion causes integer overflow, possibly leading to heap-buffer overflow. Can be triggered by writing specially-crafted value in the fread() function, which is normally script author controlled.

Comment 7 Remi Collet 2016-07-25 13:13:37 UTC

Notice: method SplFileObject::fread have been introduce in PHP 5.5.

So version <= 5.4 are not affected.

Comment 8 errata-xmlrpc 2016-11-15 11:41:47 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