#VU44783 Input validation error in PHP - CVE-2011-3182

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

PHP before 5.3.7 does not properly check the return values of the malloc, calloc, and realloc library functions, which allows context-dependent attackers to cause a denial of service (NULL pointer dereference and application crash) or trigger a buffer overflow by leveraging the ability to provide an arbitrary value for a function argument, related to (1) ext/curl/interface.c, (2) ext/date/lib/parse_date.c, (3) ext/date/lib/parse_iso_intervals.c, (4) ext/date/lib/parse_tz.c, (5) ext/date/lib/timelib.c, (6) ext/pdo_odbc/pdo_odbc.c, (7) ext/reflection/php_reflection.c, (8) ext/soap/php_sdl.c, (9) ext/xmlrpc/libxmlrpc/base64.c, (10) TSRM/tsrm_win32.c, and (11) the strtotime function. Per: http://cwe.mitre.org/data/definitions/476.html 'CWE-476: NULL Pointer Dereference'

Remediation

External links

• http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
• http://marc.info/?l=full-disclosure&m=131373057621672&w=2
• http://securityreason.com/achievement_securityalert/101
• http://support.apple.com/kb/HT5130
• http://www.mandriva.com/security/advisories?name=MDVSA-2011:165
• http://www.openwall.com/lists/oss-security/2011/08/22/9
• http://www.securityfocus.com/bid/49249
• https://exchange.xforce.ibmcloud.com/vulnerabilities/69430