Software /
code /
prosody
File
net/http/codes.lua @ 12181:783056b4e448 0.11 0.11.12
util.xml: Do not allow doctypes, comments or processing instructions
Yes. This is as bad as it sounds. CVE pending.
In Prosody itself, this only affects mod_websocket, which uses util.xml
to parse the <open/> frame, thus allowing unauthenticated remote DoS
using Billion Laughs. However, third-party modules using util.xml may
also be affected by this.
This commit installs handlers which disallow the use of doctype
declarations and processing instructions without any escape hatch. It,
by default, also introduces such a handler for comments, however, there
is a way to enable comments nontheless.
This is because util.xml is used to parse human-facing data, where
comments are generally a desirable feature, and also because comments
are generally harmless.
author | Jonas Schäfer <jonas@wielicki.name> |
---|---|
date | Mon, 10 Jan 2022 18:23:54 +0100 |
parent | 9170:47ffce31ffe4 |
child | 10370:78bda7932f17 |
line wrap: on
line source
local response_codes = { -- Source: http://www.iana.org/assignments/http-status-codes [100] = "Continue"; -- RFC7231, Section 6.2.1 [101] = "Switching Protocols"; -- RFC7231, Section 6.2.2 [102] = "Processing"; [103] = "Early Hints"; -- [104-199] = "Unassigned"; [200] = "OK"; -- RFC7231, Section 6.3.1 [201] = "Created"; -- RFC7231, Section 6.3.2 [202] = "Accepted"; -- RFC7231, Section 6.3.3 [203] = "Non-Authoritative Information"; -- RFC7231, Section 6.3.4 [204] = "No Content"; -- RFC7231, Section 6.3.5 [205] = "Reset Content"; -- RFC7231, Section 6.3.6 [206] = "Partial Content"; -- RFC7233, Section 4.1 [207] = "Multi-Status"; [208] = "Already Reported"; -- [209-225] = "Unassigned"; [226] = "IM Used"; -- [227-299] = "Unassigned"; [300] = "Multiple Choices"; -- RFC7231, Section 6.4.1 [301] = "Moved Permanently"; -- RFC7231, Section 6.4.2 [302] = "Found"; -- RFC7231, Section 6.4.3 [303] = "See Other"; -- RFC7231, Section 6.4.4 [304] = "Not Modified"; -- RFC7232, Section 4.1 [305] = "Use Proxy"; -- RFC7231, Section 6.4.5 -- [306] = "(Unused)"; -- RFC7231, Section 6.4.6 [307] = "Temporary Redirect"; -- RFC7231, Section 6.4.7 [308] = "Permanent Redirect"; -- [309-399] = "Unassigned"; [400] = "Bad Request"; -- RFC7231, Section 6.5.1 [401] = "Unauthorized"; -- RFC7235, Section 3.1 [402] = "Payment Required"; -- RFC7231, Section 6.5.2 [403] = "Forbidden"; -- RFC7231, Section 6.5.3 [404] = "Not Found"; -- RFC7231, Section 6.5.4 [405] = "Method Not Allowed"; -- RFC7231, Section 6.5.5 [406] = "Not Acceptable"; -- RFC7231, Section 6.5.6 [407] = "Proxy Authentication Required"; -- RFC7235, Section 3.2 [408] = "Request Timeout"; -- RFC7231, Section 6.5.7 [409] = "Conflict"; -- RFC7231, Section 6.5.8 [410] = "Gone"; -- RFC7231, Section 6.5.9 [411] = "Length Required"; -- RFC7231, Section 6.5.10 [412] = "Precondition Failed"; -- RFC7232, Section 4.2 [413] = "Payload Too Large"; -- RFC7231, Section 6.5.11 [414] = "URI Too Long"; -- RFC7231, Section 6.5.12 [415] = "Unsupported Media Type"; -- RFC7231, Section 6.5.13 [416] = "Range Not Satisfiable"; -- RFC7233, Section 4.4 [417] = "Expectation Failed"; -- RFC7231, Section 6.5.14 [418] = "I'm a teapot"; -- RFC2324, Section 2.3.2 -- [419-420] = "Unassigned"; [421] = "Misdirected Request"; -- RFC7540, Section 9.1.2 [422] = "Unprocessable Entity"; [423] = "Locked"; [424] = "Failed Dependency"; [425] = "Too Early"; [426] = "Upgrade Required"; -- RFC7231, Section 6.5.15 -- [427] = "Unassigned"; [428] = "Precondition Required"; [429] = "Too Many Requests"; -- [430] = "Unassigned"; [431] = "Request Header Fields Too Large"; -- [432-450] = "Unassigned"; [451] = "Unavailable For Legal Reasons"; -- [452-499] = "Unassigned"; [500] = "Internal Server Error"; -- RFC7231, Section 6.6.1 [501] = "Not Implemented"; -- RFC7231, Section 6.6.2 [502] = "Bad Gateway"; -- RFC7231, Section 6.6.3 [503] = "Service Unavailable"; -- RFC7231, Section 6.6.4 [504] = "Gateway Timeout"; -- RFC7231, Section 6.6.5 [505] = "HTTP Version Not Supported"; -- RFC7231, Section 6.6.6 [506] = "Variant Also Negotiates"; [507] = "Insufficient Storage"; [508] = "Loop Detected"; -- [509] = "Unassigned"; [510] = "Not Extended"; [511] = "Network Authentication Required"; -- [512-599] = "Unassigned"; }; for k,v in pairs(response_codes) do response_codes[k] = k.." "..v; end return setmetatable(response_codes, { __index = function(_, k) return k.." Unassigned"; end })