Bug 1057555

Summary: php: heap overflow in floating point parsing
Product: [Other] Security Response Reporter: Tomas Hoger <thoger>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: urgent Docs Contact:
Priority: urgent    
Version: unspecifiedCC: hhorak, jorton, jrusnack, nobody, rcollet, security-response-team, webstack-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: php 5.2.2 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-03-18 20:49:04 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: 1067646, 1067647, 1067657, 1067658, 1067659    
Bug Blocks: 1056609    

Description Tomas Hoger 2014-01-24 10:50:10 UTC 
PHP uses a strtod() implementation using code written by David M. Gay.  This code was previously identified to contain a flaw leading to a heap based buffer overflow when overly long string representing a floating point number is parsed to a number.  The problem was assigned CVE ids CVE-2009-0689 (bug 539784) and CVE-2013-4164 (bug 1033460) and was fixed in various other projects re-using this affected code.

The problem was already corrected in PHP before the security issue was identified and CVE-2009-0689 assigned, via the following upstream commit:

http://git.php.net/?p=php-src.git;a=commitdiff;h=37da90248deb2188e8ee50e4753ad6340679b425

The fix was included in PHP 5.2.2.  This wasn't identified as security fix, or mentioned in the changelog for that PHP release:

http://www.php.net/ChangeLog-5.php#5.2.2

Problem can be triggered remotely if PHP application handles value from a request as numeric / floating point.

This issue affects php packages in Red Hat Enterprise Linux 5.  The php53 in Red Hat Enterprise Linux 5 and php packages in Red Hat Enterprise Linux 6 are based on fixed upstream version and are therefore unaffected.  The php packages in Red Hat Enterprise Linux 4 and older do not contain vulnerable code.
Comment 4 Tomas Hoger 2014-03-18 18:57:20 UTC 
Making the bug public.
Comment 5 errata-xmlrpc 2014-03-18 19:43:59 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5.9 EUS - Server Only
  Red Hat Enterprise Linux 5.3 Long Life
  Red Hat Enterprise Linux 5.6 Long Life

Via RHSA-2014:0312 https://rhn.redhat.com/errata/RHSA-2014-0312.html
Comment 6 errata-xmlrpc 2014-03-18 19:45:30 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2014:0311 https://rhn.redhat.com/errata/RHSA-2014-0311.html