Bug 1338912 (CVE-2015-8879)

Summary:	CVE-2015-8879 php: odbc_bindcols function mishandles driver behavior for SQL_WVARCHAR columns
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abhgupta, dmcphers, fedora, hhorak, jialiu, jokerman, jorton, kseifried, lmeyer, mmccomas, rcollet, tiwillia, webstack-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	php 5.6.12	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-06-01 13:25:13 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:	1338927
Bug Blocks:	1338914

Description Andrej Nemec 2016-05-23 15:39:45 UTC

A vulnerability was found in php. The odbc_bindcols function in ext/odbc/php_odbc.c in PHP before 5.6.12 mishandles driver behavior for SQL_WVARCHAR columns, which allows remote attackers to cause a denial of service (application crash) in opportunistic circumstances by leveraging use of the odbc_fetch_array function to access a certain type of Microsoft SQL Server table.

Upstream bug:

https://bugs.php.net/bug.php?id=69975

Comment 1 Andrej Nemec 2016-05-23 16:36:17 UTC

Created php tracking bugs for this issue:

Affects: fedora-all [bug 1338927]

Comment 2 Tomas Hoger 2016-06-01 13:25:13 UTC

Upstream commits:

http://git.php.net/?p=php-src.git;a=commitdiff;h=16db4d1462bf3eacb93c0cd940f799160a284b24
http://git.php.net/?p=php-src.git;a=commitdiff;h=344ff5dd4c538eaebea075f7705321f8b86d0b47

This bug is triggered when using certain ODBC drivers and when database columns have certain types.  If a PHP application access such columns, it triggers the problem.  No malicious request is needed.  It does not seem this bug should have been classified as security issue.

Comment 3 errata-xmlrpc 2016-11-15 11:52:51 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