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

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@10918 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/string.c b/string.c
index 094907fe54..332b6186dd 100644
--- a/string.c
+++ b/string.c
@@ -4153,6 +4153,9 @@ rb_str_intern(VALUE s)
     }
     if (strlen(RSTRING_PTR(str)) != RSTRING_LEN(str))
 	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_PTR(str));
     return ID2SYM(id);
 }