Bug 1374698 – CVE-2016-7125 php: Session Data Injection Vulnerability

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Bug 1374698 - (CVE-2016-7125) CVE-2016-7125 php: Session Data Injection Vulnerability

Summary:	CVE-2016-7125 php: Session Data Injection Vulnerability

Status:	CLOSED ERRATA

Aliases:	CVE-2016-7125

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 09:00 EDT by Martin Prpič
Modified:	2016-11-15 13:32 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 02:08:03 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 Martin Prpič 2016-09-09 09:00:20 EDT

The following flaw was found in PHP:

If the session name is not allowed, then session php handler will ignore and skip the name, and continue to parsing. This means that if an attacker can control the session name, then he will be able to inject arbitrarily session data. The similar issue also exist in session php_binary handler.

Upstream bug:

https://bugs.php.net/bug.php?id=72681

Upstream patch:

https://github.com/php/php-src/commit/8763c6090d627d8bb0ee1d030c30e58f406be9ce?w=1

Comment 1 Huzaifa S. Sidhpurwala 2016-10-20 02:08:03 EDT

Analysis:

In order to exploit this, you need a MITM attacker to know the session name. Then the attacker will be able to hijack the session and control the data passing between the server and the client. The PHP script however needs to run special code in order for the attacker to pull this off.

Comment 2 errata-xmlrpc 2016-11-15 06:44:59 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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