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.
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://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
Source: MITRE
Published: 2011-02-19
Updated: 2018-10-10
Type: NVD-CWE-Other
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM