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Improve check for unauthorized redirect url

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Co-authored-by: Kayou <pierre@kayou.io>
This commit is contained in:
Alexandre Aubin 2021-11-15 19:02:13 +01:00 committed by GitHub
parent 0e6369bb38
commit 325964742d
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 2 deletions
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7
helpers.lua
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@ -1070,8 +1070,11 @@ function redirect(url)
if not string.starts(url, "/") and not string.starts(url, "http://") and not string.starts(url, "https://") then
url = "https://"..url
end
local domain = url:match("^https?://([^/]+)/?")
if string.match(url, "(.*)\n") or (domain ~= nil and not is_in_table(conf["domains"], domain)) then
local is_known_domain = false
for _, domain in ipairs(conf["domains"]) do
is_known_domain = is_known_domain or url:match("^https?://"..domain.."/?") ~= nil
end
if string.match(url, "(.*)\n") or not is_known_domain then
logger.debug("Unauthorized redirection to "..url)
flash("fail", t("redirection_error_invalid_url"))
url = conf.portal_url