TITLE:
PHP "wordwrap()" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA19803

VERIFY ADVISORY:
http://secunia.com/advisories/19803/

CRITICAL:
Less critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
PHP 5.1.x
http://secunia.com/product/6796/
PHP 5.0.x
http://secunia.com/product/3919/
PHP 4.4.x
http://secunia.com/product/5768/
PHP 4.3.x
http://secunia.com/product/922/

DESCRIPTION:
Leon Juranic has discovered a vulnerability in PHP, which potentially
can be exploited by malicious people to compromise a vulnerable
system.

The vulnerability is caused due to a boundary error in the PHP
"wordwrap()" function. This can be exploited to cause a heap-based
buffer overflow via overly long strings passed to the function.

The vulnerability has been confirmed in version 5.1.2 and also
reported in version 4.4.2. Other versions may also be affected.

SOLUTION:
Ensure that PHP scripts do not call the "wordwrap()" PHP function
with input originating from untrusted sources.

PROVIDED AND/OR DISCOVERED BY:
Leon Juranic

ORIGINAL ADVISORY:
http://www.infigo.hr/hr/in_focus/advisories/INFIGO-2006-04-02

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

----------------------------------------------------------------------