PHP 'error_log' Safe Mode Restriction-Bypass Vulnerability

BID:32383

Info

PHP 'error_log' Safe Mode Restriction-Bypass Vulnerability

Bugtraq ID: 32383
Class: Input Validation Error
CVE: CVE-2008-5625
Remote: No
Local: Yes
Published: Nov 20 2008 12:00AM
Updated: Feb 23 2010 06:32PM
Credit: SecurityReason [ Maksymilian Arciemowicz ( cXIb8O3 ) ]
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 11
SuSE SUSE Linux Enterprise 10
S.u.S.E. openSUSE 11.2
S.u.S.E. openSUSE 11.1
S.u.S.E. openSUSE 11.0
rPath rPath Linux 2
rPath rPath Linux 1
rPath Appliance Platform Linux Service 2
rPath Appliance Platform Linux Service 1
PHP PHP 5.2.6
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 HP-UX B.11.31
HP HP-UX B.11.23
HP HP-UX B.11.11
Gentoo Linux
Not Vulnerable: PHP PHP 5.2.8

Discussion

PHP 'error_log' Safe Mode Restriction-Bypass Vulnerability

PHP is prone to a 'safe_mode' restriction-bypass vulnerability. Successful exploits could allow an attacker to write files in unauthorized locations.

This vulnerability would be an issue in shared-hosting configurations where multiple users can create and execute arbitrary PHP script code, with the 'safe_mode' restrictions assumed to isolate the users from each other.

Versions prior to PHP 5.2.8 are vulnerable.

Exploit / POC

PHP 'error_log' Safe Mode Restriction-Bypass Vulnerability

To exploit this issue, an attacker may use readily available tools.

The following example exploit is available:

Solution / Fix

PHP 'error_log' Safe Mode Restriction-Bypass Vulnerability

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


Mandriva Linux Mandrake 2008.1 x86_64

Ubuntu Ubuntu Linux 7.10 powerpc

Mandriva Linux Mandrake 2008.1

Ubuntu Ubuntu Linux 8.04 LTS powerpc

Ubuntu Ubuntu Linux 8.10 powerpc

Ubuntu Ubuntu Linux 8.10 i386

Ubuntu Ubuntu Linux 8.04 LTS sparc

Ubuntu Ubuntu Linux 6.06 LTS sparc

Mandriva Linux Mandrake 2008.0 x86_64

Ubuntu Ubuntu Linux 8.04 LTS amd64

Ubuntu Ubuntu Linux 6.06 LTS powerpc

Mandriva Linux Mandrake 2008.0

Ubuntu Ubuntu Linux 7.10 sparc

Ubuntu Ubuntu Linux 8.04 LTS lpia

Ubuntu Ubuntu Linux 6.06 LTS i386

Ubuntu Ubuntu Linux 7.10 lpia

Ubuntu Ubuntu Linux 8.10 lpia

Ubuntu Ubuntu Linux 7.10 i386

Ubuntu Ubuntu Linux 6.06 LTS amd64

Ubuntu Ubuntu Linux 8.10 sparc

Mandriva Linux Mandrake 2009.0

MandrakeSoft Corporate Server 4.0

Ubuntu Ubuntu Linux 7.10 amd64

Ubuntu Ubuntu Linux 8.04 LTS i386

Mandriva Linux Mandrake 2009.0 x86_64

Ubuntu Ubuntu Linux 8.10 amd64

MandrakeSoft Corporate Server 4.0 x86_64

References

PHP 'error_log' Safe Mode Restriction-Bypass Vulnerability

References:

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