PHP 'mbstring' Extension Buffer Overflow Vulnerability

BID:32948

Info

PHP 'mbstring' Extension Buffer Overflow Vulnerability

Bugtraq ID: 32948
Class: Boundary Condition Error
CVE: CVE-2008-5557
Remote: Yes
Local: No
Published: Dec 21 2008 12:00AM
Updated: Apr 22 2010 06:03PM
Credit: Moriyoshi Koizumi <br>
Vulnerable: Ubuntu Ubuntu Linux 8.10 sparc
Ubuntu Ubuntu Linux 8.10 powerpc
Ubuntu Ubuntu Linux 8.10 lpia
Ubuntu Ubuntu Linux 8.10 i386
Ubuntu Ubuntu Linux 8.10 amd64
Ubuntu Ubuntu Linux 8.04 LTS sparc
Ubuntu Ubuntu Linux 8.04 LTS powerpc
Ubuntu Ubuntu Linux 8.04 LTS lpia
Ubuntu Ubuntu Linux 8.04 LTS i386
Ubuntu Ubuntu Linux 8.04 LTS amd64
Ubuntu Ubuntu Linux 7.10 sparc
Ubuntu Ubuntu Linux 7.10 powerpc
Ubuntu Ubuntu Linux 7.10 lpia
Ubuntu Ubuntu Linux 7.10 i386
Ubuntu Ubuntu Linux 7.10 amd64
Ubuntu Ubuntu Linux 6.06 LTS sparc
Ubuntu Ubuntu Linux 6.06 LTS powerpc
Ubuntu Ubuntu Linux 6.06 LTS i386
Ubuntu Ubuntu Linux 6.06 LTS amd64
Turbolinux Turbolinux Server 10.0
Turbolinux Turbolinux Server 11 x64
Turbolinux Turbolinux Server 11
Turbolinux Turbolinux Server 10.0.0 x64
Turbolinux Client 2008
Turbolinux Appliance Server Workgroup Edition 1.0
Turbolinux Appliance Server Hosting Edition 1.0
Turbolinux Appliance Server 1.0 Workgroup Edition
Turbolinux Appliance Server 1.0 Hosting Edition
Turbolinux Appliance Server 3.0 x64
Turbolinux Appliance Server 3.0
Turbolinux Appliance Server 2.0
SuSE SUSE Linux Enterprise Server 9
SuSE SUSE Linux Enterprise Server 10 SP2
SuSE openSUSE 10.3
S.u.S.E. openSUSE 11.1
S.u.S.E. openSUSE 11.0
S.u.S.E. Open-Enterprise-Server 0
rPath rPath Linux 2
rPath rPath Linux 1
rPath Appliance Platform Linux Service 2
rPath Appliance Platform Linux Service 1
RedHat Enterprise Linux WS 4
RedHat Enterprise Linux WS 3
RedHat Enterprise Linux ES 4
RedHat Enterprise Linux ES 3
RedHat Enterprise Linux Desktop Workstation 5 client
RedHat Enterprise Linux Desktop version 4
RedHat Desktop 3.0
RedHat Application Stack v2 0
Red Hat Fedora 9
Red Hat Fedora 10
Red Hat Enterprise Linux AS 4
Red Hat Enterprise Linux AS 3
Red Hat Enterprise Linux 5 Server
PHP PHP 5.2.6
PHP PHP 5.2.5
PHP PHP 5.2.4
PHP PHP 5.2.3
PHP PHP 5.2.2
PHP PHP 5.2.1
+ Ubuntu Ubuntu Linux 7.04 sparc
 + Ubuntu Ubuntu Linux 7.04 powerpc
 + Ubuntu Ubuntu Linux 7.04 i386
 + Ubuntu Ubuntu Linux 7.04 amd64
 PHP PHP 5.1.6
PHP PHP 5.1.5
PHP PHP 5.1.4
PHP PHP 5.1.3 -RC1
PHP PHP 5.1.3
PHP PHP 5.1.2
PHP PHP 5.1.1
PHP PHP 5.1
PHP PHP 5.0.5
PHP PHP 5.0.4
PHP PHP 5.0.3
PHP PHP 5.0.2
PHP PHP 5.0.1
PHP PHP 5.0 candidate 3
PHP PHP 5.0 candidate 2
PHP PHP 5.0 candidate 1
PHP PHP 5.0 .0
PHP PHP 4.4.9
PHP PHP 4.4.8
PHP PHP 4.4.7
PHP PHP 4.4.6
PHP PHP 4.4.5
PHP PHP 4.4.4
PHP PHP 4.4.3
PHP PHP 4.4.2
PHP PHP 4.4.1
PHP PHP 4.4 .0
PHP PHP 4.3.11
PHP PHP 4.3.10
PHP PHP 4.3.9
PHP PHP 4.3.8
PHP PHP 4.3.7
PHP PHP 4.3.6
PHP PHP 4.3.5
PHP PHP 4.3.4
PHP PHP 4.3.3
PHP PHP 4.3.2
PHP PHP 4.3.1
PHP PHP 4.3
PHP PHP 5.2
Pardus Linux 2008 0
Pardus Linux 2007 0
Mandriva Linux Mandrake 2009.0 x86_64
Mandriva Linux Mandrake 2009.0
Mandriva Linux Mandrake 2008.1 x86_64
Mandriva Linux Mandrake 2008.1
Mandriva Linux Mandrake 2008.0 x86_64
Mandriva Linux Mandrake 2008.0
MandrakeSoft Corporate Server 4.0 x86_64
MandrakeSoft Corporate Server 4.0
HP System Management Homepage 6.0 .96
HP System Management Homepage 6.0.0.95
HP HP-UX B.11.31
HP HP-UX B.11.23
HP HP-UX B.11.11
Gentoo Linux
Debian Linux 5.0 sparc
Debian Linux 5.0 s/390
Debian Linux 5.0 powerpc
Debian Linux 5.0 mipsel
Debian Linux 5.0 mips
Debian Linux 5.0 m68k
Debian Linux 5.0 ia-64
Debian Linux 5.0 ia-32
Debian Linux 5.0 hppa
Debian Linux 5.0 armel
Debian Linux 5.0 arm
Debian Linux 5.0 amd64
Debian Linux 5.0 alpha
Debian Linux 5.0
Debian Linux 4.0 sparc
Debian Linux 4.0 s/390
Debian Linux 4.0 powerpc
Debian Linux 4.0 mipsel
Debian Linux 4.0 mips
Debian Linux 4.0 m68k
Debian Linux 4.0 ia-64
Debian Linux 4.0 ia-32
Debian Linux 4.0 hppa
Debian Linux 4.0 armel
Debian Linux 4.0 arm
Debian Linux 4.0 amd64
Debian Linux 4.0 alpha
Debian Linux 4.0
Avaya Voice Portal 4.1
Avaya Voice Portal 4.0
Avaya Message Networking MN 3.1
Avaya Message Networking 3.1
Avaya Message Networking
Avaya Intuity AUDIX LX 2.0 SP2
Avaya Intuity AUDIX LX 2.0 SP1
Avaya Intuity AUDIX LX 2.0
Avaya Intuity AUDIX LX 1.0
Avaya Communication Manager 4.0.3 SP1
Avaya Communication Manager 5.1
+ Avaya Communication Manager Server DEFINITY Server SI/CS
+ Avaya Communication Manager Server S8100
+ Avaya Communication Manager Server S8300
+ Avaya Communication Manager Server S8500
+ Avaya Communication Manager Server S8700
Avaya Communication Manager 5.0 SP3
Avaya Communication Manager 5.0
Avaya Communication Manager 4.0
Avaya Aura SIP Enablement Services 3.1.1
Avaya Aura SIP Enablement Services 5.1
Avaya Aura SIP Enablement Services 5.0
Avaya Aura SIP Enablement Services 3.1
Avaya Aura SIP Enablement Services 3.0
Avaya Aura Application Enablement Services 4.2.2
Avaya Aura Application Enablement Services 4.2.1
Avaya Aura Application Enablement Services 4.0.1
Avaya Aura Application Enablement Services 3.1.6
Avaya Aura Application Enablement Services 3.1.5
Avaya Aura Application Enablement Services 3.1.4
Avaya Aura Application Enablement Services 3.1.3
Avaya Aura Application Enablement Services 4.2
Avaya Aura Application Enablement Services 4.1
Avaya Aura Application Enablement Services 4.0
Avaya Aura Application Enablement Services 3.1
Avaya Aura Application Enablement Services 3.0
Apple Mac OS X Server 10.5.6
Apple Mac OS X Server 10.5.5
Apple Mac OS X Server 10.5.4
Apple Mac OS X Server 10.5.3
Apple Mac OS X Server 10.5.2
Apple Mac OS X Server 10.5.1
Apple Mac OS X Server 10.5
Apple Mac OS X 10.5.6
Apple Mac OS X 10.5.5
Apple Mac OS X 10.5.4
Apple Mac OS X 10.5.3
Apple Mac OS X 10.5.2
Apple Mac OS X 10.5.1
Apple Mac OS X 10.5
Not Vulnerable: PHP PHP 5.2.8
PHP PHP 5.2.7
Apple Mac OS X Server 10.5.7
Apple Mac OS X 10.5.7

Discussion

PHP 'mbstring' Extension Buffer Overflow Vulnerability

PHP is prone to a buffer-overflow vulnerability because it fails to perform boundary checks before copying user-supplied data to insufficiently sized memory buffers. The issue affects the 'mbstring' extension included in the standard distribution.

An attacker can exploit this issue to execute arbitrary machine code in the context of the affected webserver. Failed exploit attempts will likely crash the webserver, denying service to legitimate users.

PHP 4.3.0 through 5.2.6 are vulnerable.

Exploit / POC

PHP 'mbstring' Extension Buffer Overflow Vulnerability

Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Solution / Fix

PHP 'mbstring' Extension Buffer Overflow Vulnerability

Solution:
Updates are available. Please see the references for more information.


Ubuntu Ubuntu Linux 7.10 powerpc

Ubuntu Ubuntu Linux 8.10 powerpc

Debian Linux 5.0 alpha

Mandriva Linux Mandrake 2008.0

Debian Linux 4.0 amd64

Debian Linux 4.0 ia-32

Ubuntu Ubuntu Linux 8.10 sparc

Debian Linux 5.0 armel

Mandriva Linux Mandrake 2009.0 x86_64

Debian Linux 5.0 mips

Debian Linux 4.0 mips

Debian Linux 5.0 sparc

Mandriva Linux Mandrake 2008.1 x86_64

Debian Linux 4.0 arm

Mandriva Linux Mandrake 2008.1

Debian Linux 4.0 powerpc

Ubuntu Ubuntu Linux 8.10 i386

Debian Linux 4.0 m68k

Debian Linux 5.0 s/390

Ubuntu Ubuntu Linux 8.04 LTS lpia

Ubuntu Ubuntu Linux 7.10 lpia

Ubuntu Ubuntu Linux 6.06 LTS i386

Debian Linux 5.0 hppa

Debian Linux 4.0 sparc

Apple Mac OS X 10.5.2

Apple Mac OS X Server 10.5.2

Apple Mac OS X 10.5.3

Apple Mac OS X Server 10.5.3

Apple Mac OS X 10.5.4

Apple Mac OS X Server 10.5.5

Apple Mac OS X 10.5.6

References

PHP 'mbstring' Extension Buffer Overflow Vulnerability

References:

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