Bug 1339590 – CVE-2016-5093 php: improper nul termination leading to out-of-bounds read in get_icu_value_internal

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Bug 1339590 - (CVE-2016-5093) CVE-2016-5093 php: improper nul termination leading to out-of-bounds read in get_icu_value_internal

Summary:	CVE-2016-5093 php: improper nul termination leading to out-of-bounds read in ...

Status:	CLOSED ERRATA

Aliases:	CVE-2016-5093

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

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

URL:
Whiteboard:	impact=low,public=20160519,reported=2...
Keywords:	Security

Depends On:	1339950
Blocks:	1339953
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Reported:	2016-05-25 07:57 EDT by Adam Mariš
Modified:	2016-11-15 09:37 EST (History)
CC List:	13 users (show)

See Also:
Fixed In Version:	php 5.5.36, php 5.6.22, php 7.0.7
Doc Type:	If docs needed, set a value
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-06-07 08:58:12 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 2016-05-25 07:57:03 EDT

An out-of-bounds read vulnerability was found in get_icu_value_internal causes leakage of heap memory because of missing null character at the end of zend_string.

Upstream bug:

https://bugs.php.net/bug.php?id=72241

Upstream patch:

https://git.php.net/?p=php-src.git;a=commit;h=97eff7eb57fc2320c267a949cffd622c38712484

CVE request:

http://seclists.org/oss-sec/2016/q2/404

Comment 1 Adam Mariš 2016-05-26 05:08:24 EDT

Created php tracking bugs for this issue:

Affects: fedora-all [bug 1339950]

Comment 2 Fedora Update System 2016-05-29 18:21:27 EDT

php-5.6.22-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 3 Fedora Update System 2016-05-30 17:20:52 EDT

php-5.6.22-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 4 Fedora Update System 2016-06-03 11:21:52 EDT

php-5.6.22-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 5 Tomas Hoger 2016-06-07 08:58:12 EDT

This issue is a very limited information leak / out of bounds read, caused by a failure to nul terminate string in certain cases.  The use of term "leak" is misleading, as it's not a resource leak / failure to de-allocate memory after its effective life time.  Practically, only few bytes or memory are disclosed, unlikely to disclose sensitive information.

This issue is in the intl (Internationalization) extension.  In Red Hat products, this extension is packaged separately in php-intl sub-RPM.  Systems without that package installed can not be affected by this issue.

Comment 6 errata-xmlrpc 2016-11-15 06:53:06 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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