PHP 5.3.5 - 'grapheme_extract()' Null Pointer Dereference Denial of Service
🗓️ 17 Feb 2011 00:00:00Reported by Maksymilian ArciemowiczType 
exploitdb🔗 www.exploit-db.com👁 34 Views
| Reporter | Title | Published | Views | Family All 53 |
|---|---|---|---|---|
 | PHP 5.3.5 grapheme_extract() NULL Pointer Dereference | 18 Feb 201100:00 | – | zdt |
 | CVE-2011-0420 | 17 Feb 201100:00 | – | circl |
 | CVE-2011-0420 | 18 Feb 201123:00 | – | cve |
 | CVE-2011-0420 | 18 Feb 201123:00 | – | cvelist |
 | [SECURITY] [DSA 2262-2] php5 update | 1 Jul 201120:00 | – | debian |
| [SECURITY] [DSA 2266-1] php5 security update | 29 Jun 201118:42 | – | debian |
 | Debian DSA-2266-1 : php5 - several vulnerabilities | 5 Jul 201100:00 | – | nessus |
| GLSA-201110-06 : PHP: Multiple vulnerabilities | 12 Oct 201100:00 | – | nessus |
| Mac OS X Multiple Vulnerabilities (Security Update 2011-006) | 13 Oct 201100:00 | – | nessus |
| openSUSE Security Update : apache2-mod_php5 (openSUSE-SU-2011:0276-1) | 5 May 201100:00 | – | nessus |
10
source: https://www.securityfocus.com/bid/46429/info
PHP is prone to a denial-of-service vulnerability caused by a NULL-pointer dereference.
An attacker can exploit this issue to cause an appliation written in PHP to crash, denying service to legitimate users.
PHP 5.3.5 is vulnerable; other versions may also be affected.
The following proof-of-concept is available:
grapheme_extract('a',-1);Data
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24 Nov 2014 00:00Current
8.2High risk
Vulners AI Score8.2
CVSS 25
EPSS0.14409