* [PATCH] http: reject non-LWS CTL chars (0..31 + 127) in field values
@ 2017-03-05 2:59 Eric Wong
0 siblings, 0 replies; only message in thread
From: Eric Wong @ 2017-03-05 2:59 UTC (permalink / raw)
To: kcar-public
RFC 2616 doesn't appear to allow most CTL bytes even though
Mongrel always did. Rack::Lint disallows 0..31, too, though we
allow "\t" (HT, 09) since it's LWS and allowed by RFC 2616.
---
ext/kcar/kcar_http_common.rl | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/ext/kcar/kcar_http_common.rl b/ext/kcar/kcar_http_common.rl
index 36752b0..cb89248 100644
--- a/ext/kcar/kcar_http_common.rl
+++ b/ext/kcar/kcar_http_common.rl
@@ -21,6 +21,7 @@
pchar = (uchar | ":" | "@" | "&" | "=" | "+");
tspecials = ("(" | ")" | "<" | ">" | "@" | "," | ";" | ":" | "\\" | "\"" | "/" | "[" | "]" | "?" | "=" | "{" | "}" | " " | "\t");
lws = (" " | "\t");
+ content = ((any -- CTL) | lws);
# elements
token = (ascii -- (CTL | tspecials));
@@ -32,9 +33,9 @@
field_name = ( token -- ":" )+ >start_field %write_field;
- field_value = any* >start_value %write_value;
+ field_value = content* >start_value %write_value;
- value_cont = lws+ any* >start_value %write_cont_value;
+ value_cont = lws+ content* >start_value %write_cont_value;
message_header = ((field_name ":" lws* field_value)|value_cont) :> CRLF;
chunk_ext_val = token*;
--
EW
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2017-03-05 2:59 [PATCH] http: reject non-LWS CTL chars (0..31 + 127) in field values Eric Wong
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