* string.c (rb_str_intern): prohibit interning tainted string.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_8@10916 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/string.c b/string.c
index 83ac1e486..681614b13 100644
--- a/string.c
+++ b/string.c
@@ -4404,6 +4404,9 @@ rb_str_intern(s)
     }
     if (strlen(RSTRING(str)->ptr) != RSTRING(str)->len)
 	rb_raise(rb_eArgError, "symbol string may not contain `\\0'");
+    if (OBJ_TAINTED(str)) {
+	rb_raise(rb_eSecurityError, "Insecure: can't intern tainted string");
+    }
     id = rb_intern(RSTRING(str)->ptr);
     return ID2SYM(id);
 }