CVE-2006-2314

PostgreSQL 8.1.x before 8.1.4, 8.0.x before 8.0.8, 7.4.x before 7.4.13,
7.3.x before 7.3.15, and earlier versions allows context-dependent
attackers to bypass SQL injection protection methods in applications that
use multibyte encodings that allow the "" (backslash) byte 0x5c to be the
trailing byte of a multibyte character, such as SJIS, BIG5, GBK, GB18030,
and UHC, which cannot be handled correctly by a client that does not
understand multibyte encodings, aka a second variant of “Encoding-Based SQL
Injection.” NOTE: it could be argued that this is a class of issue related
to interaction errors between the client and PostgreSQL, but a CVE has been
assigned since PostgreSQL is treating this as a preventative measure
against this class of problem.