PRIOn knowledge basePRION:CVE-2011-0420Null pointer dereference
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.
References
lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
securityreason.com/achievement_securityalert/94
securityreason.com/securityalert/8087
support.apple.com/kb/HT5002
svn.php.net/viewvc/php/php-src/trunk/ext/intl/grapheme/grapheme_string.c?r1=306449&r2=306448&pathrev=306449
www.debian.org/security/2011/dsa-2266
www.kb.cert.org/vuls/id/210829
www.securityfocus.com/archive/1/516504/100/0/threaded
www.securityfocus.com/archive/1/516518/100/0/threaded
www.securityfocus.com/bid/46429
exchange.xforce.ibmcloud.com/vulnerabilities/65437
www.exploit-db.com/exploits/16182
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