PHP MySQL Safe_Mode Filesystem Circumvention Vulnerability

BID:4026

Info

PHP MySQL Safe_Mode Filesystem Circumvention Vulnerability

Bugtraq ID: 4026
Class: Access Validation Error
CVE: CVE-2002-0229
CVE-2007-3997
Remote: Yes
Local: Yes
Published: Feb 03 2002 12:00AM
Updated: Sep 11 2007 11:51PM
Credit: Dave Wilson <[email protected]> is credited with the discovery of this issue.
Vulnerable: 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
+ Ubuntu Ubuntu Linux 6.10 sparc
 + Ubuntu Ubuntu Linux 6.10 powerpc
 + Ubuntu Ubuntu Linux 6.10 i386
 + Ubuntu Ubuntu Linux 6.10 amd64
 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
+ 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
 PHP PHP 5.1.1
PHP PHP 5.1
PHP PHP 5.0.5
PHP PHP 5.0.4
PHP PHP 5.0.3
+ Trustix Secure Linux 2.2
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 4.4.7
- Slackware Linux 10.2
- Slackware Linux 11.0
 - Slackware Linux -current
 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
+ Gentoo Linux
+ Redhat Fedora Core3
 + Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
+ Trustix Secure Linux 1.5
PHP PHP 4.3.9
PHP PHP 4.3.8
+ Mandriva Linux Mandrake 10.1 x86_64
 + Mandriva Linux Mandrake 10.1
+ S.u.S.E. Linux Personal 9.2
+ Turbolinux Turbolinux Server 10.0
+ Ubuntu Ubuntu Linux 4.1 ppc
 + Ubuntu Ubuntu Linux 4.1 ia64
 + Ubuntu Ubuntu Linux 4.1 ia32
 PHP PHP 4.3.7
PHP PHP 4.3.6
PHP PHP 4.3.5
PHP PHP 4.3.4
+ MandrakeSoft Corporate Server 3.0 x86_64
 + MandrakeSoft Corporate Server 3.0
+ Mandriva Linux Mandrake 10.0 AMD64
 + Mandriva Linux Mandrake 10.0
+ S.u.S.E. Linux Personal 9.1
PHP PHP 4.3.3
+ S.u.S.E. Linux Personal 9.0 x86_64
 + S.u.S.E. Linux Personal 9.0
+ Turbolinux Home
+ Turbolinux Turbolinux 10 F...
 + Turbolinux Turbolinux Desktop 10.0
PHP PHP 4.3.2
PHP PHP 4.3.1
+ Mandriva Linux Mandrake 9.1 ppc
 + Mandriva Linux Mandrake 9.1
+ OpenPKG OpenPKG Current
 + S.u.S.E. Linux Personal 8.2
PHP PHP 4.3
PHP PHP 4.2.3
+ EnGarde Secure Linux 1.0.1
+ MandrakeSoft Corporate Server 2.1 x86_64
 + MandrakeSoft Corporate Server 2.1
+ Mandriva Linux Mandrake 9.0
+ Turbolinux Turbolinux Server 8.0
+ Turbolinux Turbolinux Server 7.0
+ Turbolinux Turbolinux Workstation 8.0
+ Turbolinux Turbolinux Workstation 7.0
PHP PHP 4.2.2
+ Gentoo Linux 1.4 _rc1
 + Gentoo Linux 1.2
+ OpenPKG OpenPKG 1.1
+ Redhat Linux 8.0 i386
 + Redhat Linux 8.0
+ SuSE Linux 8.1
PHP PHP 4.2.1
- FreeBSD FreeBSD 4.6
- FreeBSD FreeBSD 4.5
- FreeBSD FreeBSD 4.4
- FreeBSD FreeBSD 4.3
+ Slackware Linux 8.1
PHP PHP 4.2 .0
PHP PHP 4.2 -dev
PHP PHP 4.1.2
+ Apple Mac OS X 10.1.5
+ Apple Mac OS X 10.1.4
+ Apple Mac OS X 10.1.3
+ Apple Mac OS X 10.1.2
+ Apple Mac OS X 10.1.1
+ Apple Mac OS X 10.1
+ Apple Mac OS X 10.1
+ Apple Mac OS X 10.0.4
+ Apple Mac OS X 10.0.3
+ Apple Mac OS X 10.0.2
+ Apple Mac OS X 10.0.1
+ Apple Mac OS X 10.0
+ Debian Linux 3.0 sparc
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 alpha
 + MandrakeSoft Multi Network Firewall 2.0
+ MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 8.2 ppc
 + Mandriva Linux Mandrake 8.2
PHP PHP 4.1.1
PHP PHP 4.1 .0
+ SuSE Linux 8.0 i386
 + SuSE Linux 8.0
PHP PHP 4.0.7 RC3
PHP PHP 4.0.7 RC2
PHP PHP 4.0.7 RC1
PHP PHP 4.0.7
PHP PHP 4.0.6
+ Caldera OpenLinux Server 3.1.1
+ Caldera OpenLinux Server 3.1
+ Caldera OpenLinux Workstation 3.1.1
+ Caldera OpenLinux Workstation 3.1
+ HP Secure OS software for Linux 1.0
- IBM AIX 4.3.3
- IBM AIX 4.3.2
- IBM AIX 4.3.1
- IBM AIX 4.3
- IBM AIX 5.1
 + MandrakeSoft Corporate Server 1.0.1
+ Mandriva Linux Mandrake 8.1 ia64
 + Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
+ Mandriva Linux Mandrake 7.2
+ Mandriva Linux Mandrake 7.1
+ Redhat Linux 7.2 ia64
 + Redhat Linux 7.2 i386
 + Redhat Linux 7.2
+ Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.1 alpha
 + Redhat Linux 7.1
+ Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 + Redhat Linux 7.0
+ Sun Cobalt RaQ 550
+ Sun LX50
+ SuSE Linux 7.3 sparc
 + SuSE Linux 7.3 ppc
 + SuSE Linux 7.3 i386
 + SuSE Linux 7.3
+ SuSE Linux 7.2 i386
 + SuSE Linux 7.2
+ Trustix Secure Linux 1.5
PHP PHP 4.0.5
PHP PHP 4.0.4
+ Compaq Compaq Secure Web Server PHP 1.0
+ Guardian Digital Engarde Secure Linux 1.0.1
+ SuSE Linux 7.2
+ SuSE Linux 7.1 x86
 + SuSE Linux 7.1 sparc
 + SuSE Linux 7.1 ppc
 + SuSE Linux 7.1 alpha
 + SuSE Linux 7.1
+ SuSE Linux 7.0 sparc
 + SuSE Linux 7.0 ppc
 + SuSE Linux 7.0 i386
 + SuSE Linux 7.0 alpha
 + SuSE Linux 7.0
PHP PHP 4.0.3 pl1
+ SuSE Linux 6.4 ppc
 + SuSE Linux 6.4 i386
 + SuSE Linux 6.4 alpha
 + SuSE Linux 6.4
PHP PHP 4.0.3
+ Debian Linux 2.2 sparc
 + Debian Linux 2.2 powerpc
 + Debian Linux 2.2 IA-32
 + Debian Linux 2.2 arm
 + Debian Linux 2.2 alpha
 + Debian Linux 2.2 68k
 + Debian Linux 2.2
+ Sun Cobalt Control Station 4100CS
+ Sun Cobalt Qube3 Japanese 4000WGJ
+ Sun Cobalt Qube3 Japanese w/ Caching and RAID 4100WGJ
+ Sun Cobalt Qube3 Japanese w/Caching 4010WGJ
+ Sun Cobalt RaQ XTR 3500R
+ Sun Cobalt RaQ XTR Japanese 3500R-ja
PHP PHP 4.0.2
PHP PHP 4.0.1 pl2
PHP PHP 4.0.1 pl1
PHP PHP 4.0.1
+ Sun Cobalt Qube3 4000WG
+ Sun Cobalt Qube3 w/ Caching and RAID 4100WG
+ Sun Cobalt Qube3 w/Caching 4010WG
+ Sun Cobalt RaQ4 3001R
+ Sun Cobalt RaQ4 Japanese RAID 3100R-ja
+ Sun Cobalt RaQ4 RAID 3100R
PHP PHP 4.0 0
PHP PHP 3.0.18
+ Debian Linux 3.0 sparc
 + Debian Linux 3.0 s/390
 + Debian Linux 3.0 ppc
 + Debian Linux 3.0 mipsel
 + Debian Linux 3.0 mips
 + Debian Linux 3.0 m68k
 + Debian Linux 3.0 ia-64
 + Debian Linux 3.0 ia-32
 + Debian Linux 3.0 hppa
 + Debian Linux 3.0 arm
 + Debian Linux 3.0 alpha
 + Debian Linux 3.0
+ Debian Linux 2.2 sparc
 + Debian Linux 2.2 powerpc
 + Debian Linux 2.2 IA-32
 + Debian Linux 2.2 arm
 + Debian Linux 2.2 alpha
 + Debian Linux 2.2 68k
 + Debian Linux 2.2
+ Redhat Linux 6.2 sparc
 + Redhat Linux 6.2 i386
 + Redhat Linux 6.2 alpha
 + Redhat Linux 6.2
 + Trustix Secure Linux 1.2
+ Trustix Secure Linux 1.1
PHP PHP 3.0.17
+ SuSE Linux 7.1 x86
 + SuSE Linux 7.1 sparc
 + SuSE Linux 7.1 ppc
 + SuSE Linux 7.1 alpha
 + SuSE Linux 7.1
+ SuSE Linux 7.0 sparc
 + SuSE Linux 7.0 ppc
 + SuSE Linux 7.0 i386
 + SuSE Linux 7.0 alpha
 + SuSE Linux 7.0
+ Trustix Secure Linux 1.2
+ Trustix Secure Linux 1.1
PHP PHP 3.0.16
PHP PHP 3.0.15
PHP PHP 3.0.14
PHP PHP 3.0.13
PHP PHP 3.0.12
PHP PHP 3.0.11
PHP PHP 3.0.10
PHP PHP 3.0.9
PHP PHP 3.0.8
PHP PHP 3.0.7
+ Sun 2800 Workgroup NTT/KOBE 2800WGJ-KOBE
PHP PHP 3.0.6
PHP PHP 3.0.5
PHP PHP 3.0.4
PHP PHP 3.0.3
PHP PHP 3.0.2
PHP PHP 3.0.1
PHP PHP 3.0 0
PHP PHP 3.0 .16
+ SuSE Linux 6.4 ppc
 + SuSE Linux 6.4 i386
 + SuSE Linux 6.4 alpha
 + SuSE Linux 6.4
PHP PHP 3.0 .13
PHP PHP 3.0 .12
PHP PHP 3.0 .11
PHP PHP 3.0 .10
PHP PHP 5.2
+ 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 arm
 + Debian Linux 4.0 amd64
 + Debian Linux 4.0 alpha
 + Debian Linux 4.0
Not Vulnerable: PHP PHP 5.2.4

Discussion

PHP MySQL Safe_Mode Filesystem Circumvention Vulnerability

PHP's 'safe_mode' feature may be used to restrict access to certain areas of a filesystem by PHP scripts. However, a problem has been discovered that may allow an attacker to bypass these restrictions to gain unauthorized access to areas of the filesystem that are restricted when PHP 'safe_mode' is enabled.

In particular, the MySQL client library that ships with PHP fails to properly honor 'safe_mode'. As a result, a user can issue a LOAD DATA statement to read files that reside in restricted areas of the filesystem (as determined by 'safe_mode').

Exploit / POC

PHP MySQL Safe_Mode Filesystem Circumvention Vulnerability

The 'safemodexploit.php' example was submitted by Dave Wilson <[email protected]>:

The script will (when configured correctly) attempt to read '/var/log/lastlog' via the SQL daemon and return it to the client.

$ cp safe_mode.php /www
$ wget -qO lastlog_via_mysql localhost/safe_mode.php
$ diff /var/log/lastlog lastlog_via_mysql; echo $?
0

Solution / Fix

PHP MySQL Safe_Mode Filesystem Circumvention Vulnerability

Solution:
The vendor has released PHP 5.2.4 to address this issue. Please see the references for more information.


PHP PHP 5.2

PHP PHP 3.0 .13

PHP PHP 3.0 .11

PHP PHP 3.0 0

PHP PHP 3.0 .10

PHP PHP 3.0 .12

PHP PHP 3.0 .16

PHP PHP 3.0.1

PHP PHP 3.0.10

PHP PHP 3.0.11

PHP PHP 3.0.12

PHP PHP 3.0.13

PHP PHP 3.0.14

PHP PHP 3.0.15

PHP PHP 3.0.16

PHP PHP 3.0.17

PHP PHP 3.0.18

PHP PHP 3.0.2

PHP PHP 3.0.3

PHP PHP 3.0.4

PHP PHP 3.0.5

PHP PHP 3.0.6

PHP PHP 3.0.7

PHP PHP 3.0.8

PHP PHP 3.0.9

PHP PHP 4.0 0

PHP PHP 4.0.1

PHP PHP 4.0.1 pl1

PHP PHP 4.0.1 pl2

PHP PHP 4.0.2

PHP PHP 4.0.3 pl1

PHP PHP 4.0.3

PHP PHP 4.0.4

PHP PHP 4.0.5

PHP PHP 4.0.6

PHP PHP 4.0.7

PHP PHP 4.0.7 RC1

PHP PHP 4.0.7 RC3

PHP PHP 4.0.7 RC2

PHP PHP 4.1 .0

PHP PHP 4.1.1

PHP PHP 4.1.2

PHP PHP 4.2 -dev

PHP PHP 4.2 .0

PHP PHP 4.2.1

PHP PHP 4.2.2

PHP PHP 4.2.3

PHP PHP 4.3

PHP PHP 4.3.1

PHP PHP 4.3.10

PHP PHP 4.3.11

PHP PHP 4.3.2

PHP PHP 4.3.3

PHP PHP 4.3.4

PHP PHP 4.3.5

PHP PHP 4.3.6

PHP PHP 4.3.7

PHP PHP 4.3.8

PHP PHP 4.3.9

PHP PHP 4.4 .0

PHP PHP 4.4.1

PHP PHP 4.4.2

PHP PHP 4.4.3

PHP PHP 4.4.4

PHP PHP 4.4.5

PHP PHP 4.4.6

PHP PHP 4.4.7

PHP PHP 5.0 .0

PHP PHP 5.0 candidate 2

PHP PHP 5.0 candidate 3

PHP PHP 5.0 candidate 1

PHP PHP 5.0.1

PHP PHP 5.0.2

PHP PHP 5.0.3

PHP PHP 5.0.4

PHP PHP 5.0.5

PHP PHP 5.1

PHP PHP 5.1.1

PHP PHP 5.1.2

PHP PHP 5.1.3 -RC1

PHP PHP 5.1.3

PHP PHP 5.1.4

PHP PHP 5.1.5

PHP PHP 5.1.6

PHP PHP 5.2.1

PHP PHP 5.2.2

PHP PHP 5.2.3

References

PHP MySQL Safe_Mode Filesystem Circumvention Vulnerability

References:

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