pdo_sql_parser.re in the PDO extension in PHP before 5.3.14 and 5.4.x
before 5.4.4 does not properly determine the end of the query string
during parsing of prepared statements, which allows remote attackers
to cause a denial of service (out-of-bounds read and application
crash) via a crafted parameter value.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
BUGTRAQ:20120610 [php<=5.4.3] Parsing Bug in PHP PDO prepared statements may lead to access violation
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