ITS#9937 libldap: fix put_simple_filter() with invalid filter

Add check for trivial input string.

diff --git a/libraries/libldap/filter.c b/libraries/libldap/filter.c
index 064b2ea381f54120a944ef08da003b04ac4655eb..e158fd1fe3a07347364e9b96ffd57c6171829afb 100644 (file)
--- a/libraries/libldap/filter.c
+++ b/libraries/libldap/filter.c
@@ -555,6 +555,8 @@ put_simple_filter(
        Debug1( LDAP_DEBUG_TRACE, "put_simple_filter: \"%s\"\n",
                str );
 
+       if ( str[0] == '=' ) return -1;
+
        str = LDAP_STRDUP( str );
        if( str == NULL ) return -1;