Vulnerability CVE-2011-0420
Published: 2011-02-18   Modified: 2012-02-13

Description:
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.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
PHP 5.3.5 grapheme_extract() NULL Pointer Dereference
Maksymilian Arci...
17.02.2011

Type:

CWE-Other

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
PHP -> PHP 

 References:
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
http://securityreason.com/achievement_securityalert/94
http://securityreason.com/securityalert/8087
http://support.apple.com/kb/HT5002
http://svn.php.net/viewvc/php/php-src/trunk/ext/intl/grapheme/grapheme_string.c?r1=306449&r2=306448&pathrev=306449
http://www.debian.org/security/2011/dsa-2266
http://www.exploit-db.com/exploits/16182
http://www.kb.cert.org/vuls/id/210829
http://www.securityfocus.com/archive/1/516504/100/0/threaded
http://www.securityfocus.com/archive/1/516518/100/0/threaded
http://www.securityfocus.com/bid/46429
https://exchange.xforce.ibmcloud.com/vulnerabilities/65437
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