CVE-2011-0420
PHP 5.3.5 - 'grapheme_extract()' Null Pointer Dereference
Severity Score
7.5
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
5
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
The grapheme_extract function in the Internationalization extension (Intl) for ICU for PHP 5.3.5 allows context-dependent attackers to cause a denial of service (crash) via an invalid size argument, which triggers a NULL pointer dereference.
La función grapheme_extract en la extensión de Internacionalización (Intl) para ICU para PHP v5.3.5 permite provocar una denegación de servicio (con caída de la aplicación) a atacantes dependientes del contexto a través de un argumento de tamaño no válido, lo que provoca una desreferencia de puntero NULL.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2011-01-11 CVE Reserved
- 2011-02-17 First Exploit
- 2011-02-18 CVE Published
- 2024-08-06 CVE Updated
- 2025-05-07 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
CAPEC
References (14)
| URL | Tag | Source |
|---|---|---|
| http://securityreason.com/securityalert/8087 | Third Party Advisory | |
| http://support.apple.com/kb/HT5002 | X_refsource_confirm |
|
| http://www.kb.cert.org/vuls/id/210829 | Third Party Advisory |
|
| http://www.securityfocus.com/archive/1/516504/100/0/threaded | Mailing List | |
| http://www.securityfocus.com/archive/1/516518/100/0/threaded | Mailing List | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/65437 | Vdb Entry |
| URL | Date | SRC |
|---|---|---|
| https://www.exploit-db.com/exploits/16182 | 2011-02-17 | |
| https://www.exploit-db.com/exploits/35354 | 2011-02-17 | |
| http://securityreason.com/achievement_securityalert/94 | 2024-08-06 | |
| http://www.exploit-db.com/exploits/16182 | 2024-08-06 | |
| http://www.securityfocus.com/bid/46429 | 2024-08-06 |
| URL | Date | SRC |
|---|---|---|
| http://svn.php.net/viewvc/php/php-src/trunk/ext/intl/grapheme/grapheme_string.c?r1=306449&r2=306448&pathrev=306449 | 2018-10-10 |
| URL | Date | SRC |
|---|---|---|
| http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html | 2018-10-10 | |
| http://www.debian.org/security/2011/dsa-2266 | 2018-10-10 |