Bug #1720

Rewrite/redirect rules and URL encoding

Added by Anonymous almost 8 years ago. Updated about 7 years ago.

Target version:
Start date:
Due date:
% Done:


Missing in 1.5.x:


Dear lighty community,

I am using lighty to serve a wiki; to have nice urls, i use the following in my lighttpd.conf:

url.rewrite-once = ( "^/wiki/(.*)$" => "/wiki/awki.cgi/$1" )

and so i was hoping that everything going through /wiki/ would be interpreted by the script 'awki.cgi'. However, if I url-encode a part of the url, the above rewrite rule does not apply: if I ask my browser to access /wik%69/, lighty does not execute the script and gives me a
listing of files in that directory!

Is there a way to avoid that?
I asked in the forum last week but, as I had no answer, I decided to open a ticket; I apologize if this is unapropriate.

-- gaetan.bisson

Related issues

Related to Bug #1832: lighty doesn't quote spaces in urls in proxy module Fixed 2008-11-26
Related to Bug #1827: 400 Response on any URL that countains a space character (ASCII 20) Fixed 2008-11-20
Related to Bug #1819: mod_rewrite not working anymore after patching Fixed 2008-11-11
Related to Bug #1802: url-encode/decode Fixed 2008-10-20
Duplicated by Bug #1898: url.redirect matches the raw URL instead of the normalized URL Duplicate 2009-02-12

Associated revisions

Revision 55479281 (diff)
Added by stbuehler over 7 years ago

Decode url before matching in mod_rewrite (#1720)

git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9

Revision 345462a4 (diff)
Added by stbuehler over 7 years ago

Use decoded url for matching in mod_redirect (#1720)

git-svn-id: svn:// 152afb58-edef-0310-8abb-c4023f1b3aa9

Revision 2448 (diff)
Added by stbuehler about 7 years ago

Revert url decoding+simplifying before matching of mod_rewrite/mod_redirect (#1720)


#1 Updated by Anonymous over 7 years ago

I've come up with the following workaround:

url.rewrite-once = ( "^/wiki/(.*)$" => "/wiki/awki.cgi/$1" )

$HTTP["url"] =~ "^/wiki" {
  $HTTP["url"] !~ "^/wiki/awki.cgi/" {
    url.access-deny = ("")

It works because the $HTTPurl condition is evaluated after the URL is parsed (so all url-encoded characters are hopefully replaced); well, unless I'm mistaken.

-- gaetan.bisson

#2 Updated by hoffie over 7 years ago

  • Status changed from New to Fixed
  • Resolution set to fixed

Should be fixed in r2278. Just for reference, in your case you consider this a security issue since it allows for unwanted disclosure of information.
Not sure if we are going to handle it as one, but I guess it should be at least noted.

stbuehler committed the fix and didn't close this ticket as trac was broken, so I'm doing that now. All kudos to him in any case. :p

#3 Updated by stbuehler over 7 years ago

mod_redirect had similar problems:

Summary for now:
  • 1.4.x: fixed in r2278 (rewrite) and r2309 (redirect)
  • trunk: fixed in r2307 (rewrite) and r2310 (redirect)

#4 Updated by stbuehler over 7 years ago

  • Status changed from Fixed to Reopened
  • Target version changed from 1.4.20 to 1.4.21
  • Patch available set to No

Patch(es) reverted in 1.4.x (r2362) - too many regressions came up.
See commit message for more details.

We are not sure yet what to do, maybe we won't fix this at all.

#5 Updated by icy about 7 years ago

  • Target version changed from 1.4.21 to 1.4.22

#6 Updated by stbuehler about 7 years ago

  • Target version changed from 1.4.22 to 1.4.23

#7 Updated by stbuehler about 7 years ago

  • Target version changed from 1.4.23 to 1.4.x

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