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(ITS#7297) slapd crashes when ldap->mysql-backend query contains '\00' symbols

Full_Name: Alex Rusinov
Version: slapd 2.3.43 (Feb 22 2012 15:59:04)
OS: CentOS release 5.6 (Final), Linux isg 2.6.18-194.32.1.el5 #1 SMP Wed Jan 5 17:52:25 EST 2011 x86_64 x86_64 x86_64 GNU/Linux
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (2a02:578:1:101:daa:ef09:905b:5510)

Im experiencing ldap crashes when query contains \00 symbols, example (dc was
# ldapsearch -LLL -x -s sub -b "dc=aaanet,dc=net"
ldap_result: Can't contact LDAP server (-1)   <- here it crashed
I'm using ldap with mysql-backend, versions:
http://pastebin.com/AMBZKvjH                                         installed

Right before the crash the following string appears in logs:
slapd: ../../../../servers/slapd/back-sql/util.c:144: backsql_strfcat_x:
Assertion `dest->bb_val.bv_val == ((void *)0) || dest->bb_val.bv_len == strlen(
dest->bb_val.bv_val )' failed.

Any ideas?