PHP 'mbstring.func_overload' Webserver Denial Of Service Vulnerability

BID:33542

Info

PHP 'mbstring.func_overload' Webserver Denial Of Service Vulnerability

Bugtraq ID: 33542
Class: Design Error
CVE: CVE-2009-0754
Remote: Yes
Local: No
Published: Jan 30 2009 12:00AM
Updated: Jan 06 2010 12:42AM
Credit: php at strategma dot bg
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 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
SuSE SUSE Linux Enterprise Server 11
+ Linux kernel 2.6.5
SuSE SUSE Linux Enterprise Server 10
S.u.S.E. openSUSE 11.1
S.u.S.E. openSUSE 11.0
S.u.S.E. openSUSE 10.3
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 5.2.5
PHP PHP 5.1.6
PHP PHP 4.3.9
PHP PHP 4.3.2
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
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 SIP Enablement Services 3.1.2
Avaya SIP Enablement Services 5.1
Avaya SIP Enablement Services 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 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 4.0
Avaya Aura SIP Enablement Services 3.1.1
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 4.2.1
Avaya Aura Application Enablement Services 4.0.1
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 4.1
Avaya Aura Application Enablement Services 3.0
Avaya AES 4.2.2
Avaya AES 3.1.6
Avaya AES 4.2
Avaya AES 4.0
Avaya AES 3.1
Not Vulnerable:

Discussion

PHP 'mbstring.func_overload' Webserver Denial Of Service Vulnerability

PHP is prone to a denial-of-service vulnerability because it fails to limit global scope for certain settings relating to Unicode text operations.

Attackers can exploit this issue to crash the affected webserver, denying service to legitimate users.

Exploit / POC

PHP 'mbstring.func_overload' Webserver Denial Of Service Vulnerability

Attackers can exploit this issue via a browser.

The following exploit code is available:

Solution / Fix

PHP 'mbstring.func_overload' Webserver Denial Of Service Vulnerability

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


Debian Linux 5.0 ia-64

Ubuntu Ubuntu Linux 8.04 LTS powerpc

Ubuntu Ubuntu Linux 8.10 powerpc

Ubuntu Ubuntu Linux 8.04 LTS sparc

Ubuntu Ubuntu Linux 6.06 LTS sparc

Debian Linux 5.0 alpha

Mandriva Linux Mandrake 2008.0 x86_64

Ubuntu Ubuntu Linux 8.04 LTS amd64

Mandriva Linux Mandrake 2008.0

Debian Linux 5.0 mipsel

Debian Linux 4.0 amd64

Debian Linux 4.0 ia-32

Debian Linux 4.0 hppa

Ubuntu Ubuntu Linux 8.10 sparc

Debian Linux 4.0 armel

Debian Linux 5.0 armel

Debian Linux 5.0

Debian Linux 4.0 mipsel

Mandriva Linux Mandrake 2009.0 x86_64

Debian Linux 5.0 mips

Ubuntu Ubuntu Linux 8.10 amd64

Debian Linux 4.0 ia-64

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

Ubuntu Ubuntu Linux 8.10 i386

Debian Linux 4.0 powerpc

Debian Linux 4.0 m68k

Debian Linux 5.0 ia-32

Ubuntu Ubuntu Linux 6.06 LTS powerpc

Debian Linux 5.0 s/390

Ubuntu Ubuntu Linux 8.04 LTS lpia

Ubuntu Ubuntu Linux 6.06 LTS i386

Ubuntu Ubuntu Linux 8.10 lpia

Ubuntu Ubuntu Linux 6.06 LTS amd64

Debian Linux 5.0 hppa

Debian Linux 4.0 sparc

References

PHP 'mbstring.func_overload' Webserver Denial Of Service Vulnerability

References:

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