PHP 5 PHP_Stream_Filter_Create() Function Buffer Overflow Vulnerability

BID:23237

Info

PHP 5 PHP_Stream_Filter_Create() Function Buffer Overflow Vulnerability

Bugtraq ID: 23237
Class: Boundary Condition Error
CVE: CVE-2007-1824
Remote: Yes
Local: Yes
Published: Mar 31 2007 12:00AM
Updated: May 25 2007 11:02PM
Credit: Stefan Esser is credited with the discovery of this vulnerability.
Vulnerable: Ubuntu Ubuntu Linux 7.04 sparc
Ubuntu Ubuntu Linux 7.04 powerpc
Ubuntu Ubuntu Linux 7.04 i386
Ubuntu Ubuntu Linux 7.04 amd64
Ubuntu Ubuntu Linux 6.10 sparc
Ubuntu Ubuntu Linux 6.10 powerpc
Ubuntu Ubuntu Linux 6.10 i386
Ubuntu Ubuntu Linux 6.10 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
SuSE SUSE Linux Enterprise Server 8
+ Linux kernel 2.4.21
+ Linux kernel 2.4.19
SuSE SUSE Linux Enterprise Server 10
SuSE SUSE Linux Enterprise SDK 10
SuSE SUSE Linux Enterprise SDK 10
SuSE Linux Openexchange Server
SuSE Linux Enterprise Server 9
SuSE Linux Enterprise Server 10
+ Linux kernel 2.6.5
SuSE Linux 9.3 x86-64
SuSE Linux 9.3 x86
SuSE Linux 10.1 x86-64
SuSE Linux 10.1 x86
SuSE Linux 10.1 ppc
SuSE Linux 10.0 x86-64
SuSE Linux 10.0 x86
SuSE Linux 10.0 ppc
S.u.S.E. UnitedLinux 1.0
S.u.S.E. SuSE Linux School Server for i386
S.u.S.E. SUSE LINUX Retail Solution 8.0
S.u.S.E. SuSE Linux Openexchange Server 4.0
S.u.S.E. openSUSE 10.2
S.u.S.E. Open-Enterprise-Server 0
S.u.S.E. Novell Linux POS 9
S.u.S.E. Linux Professional 10.0 OSS
S.u.S.E. Linux Professional 10.0
S.u.S.E. Linux Professional 9.3 x86_64
S.u.S.E. Linux Professional 9.3
S.u.S.E. Linux Professional 10.2 X86 64
S.u.S.E. Linux Professional 10.2
S.u.S.E. Linux Professional 10.1
S.u.S.E. Linux Personal 10.0 OSS
S.u.S.E. Linux Personal 9.3 x86_64
S.u.S.E. Linux Personal 9.3
S.u.S.E. Linux Personal 10.2 X86 64
S.u.S.E. Linux Personal 10.2
S.u.S.E. Linux Personal 10.1
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 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
 OpenPKG OpenPKG E1.0-Solid
OpenPKG OpenPKG Current
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 5.2.1
+ Ubuntu Ubuntu Linux 7.04 sparc
 + Ubuntu Ubuntu Linux 7.04 powerpc
 + Ubuntu Ubuntu Linux 7.04 i386
 + Ubuntu Ubuntu Linux 7.04 amd64

Discussion

PHP 5 PHP_Stream_Filter_Create() Function Buffer Overflow Vulnerability

PHP is prone to a buffer-overflow vulnerability because the application fails to perform boundary checks before copying user-supplied data to insufficiently sized memory buffers.

An attacker can exploit this issue remotely by supplying a 'php://filter' URL to one of the file functions.

The 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.

Successful exploits for this issue will depend on the application's heap-memory implementation. PHP version 5.2.0 introduced a new memory manager that makes all little-endian platforms exploitable.

This issue affects PHP versions prior to 5.2.1.

Exploit / POC

PHP 5 PHP_Stream_Filter_Create() Function Buffer Overflow Vulnerability

The following proof of concept is available:

Solution / Fix

PHP 5 PHP_Stream_Filter_Create() Function Buffer Overflow Vulnerability

Solution:
The vendor released version 5.2.1 to address this issue. Please see the references for more information.


PHP PHP 5.2

PHP PHP 5.1.2

PHP PHP 5.1.6

References

PHP 5 PHP_Stream_Filter_Create() Function Buffer Overflow Vulnerability

References:
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