Last modified: 2005-12-27 16:51:13 UTC

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Bug 4377 - Spam blacklist can be evaded by adding square bracket to URL


Summary:	Spam blacklist can be evaded by adding square bracket to URL

Status:	RESOLVED FIXED

Product:	MediaWiki
Classification:	Unclassified
Component:	Parser (Other open bugs)
Version:	unspecified
Hardware:	All All

Importance:	Normal normal (vote)
Target Milestone:	---
Assigned To:	Nobody - You can work on this!

URL:	http://jv.wiktionary.org/w/index.php?...
Whiteboard:
Keywords:

Duplicates:	4384 (view as bug list)
Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2005-12-24 06:46 UTC by Korg
Modified:	2005-12-27 16:51 UTC (History)
CC List:	1 user (show)

See Also:
Web browser:	---
Mobile Platform:	---
Assignee Huggle Beta Tester:	---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Description Korg 2005-12-24 06:46:33 UTC

The spam blacklist extension will not match URLs which contain square brackets. For
example, if a line in a blacklist file is:

example\.com

then [http://spam.example.com/] will be blocked but
[http://spam.[.example.com/] will be ignored.

Cheers, Korg

Comment 1 Brion Vibber 2005-12-24 06:59:37 UTC

Since that wouldn't be a valid URL, it shouldn't be getting picked up as a link at all.

Comment 2 Korg 2005-12-24 09:54:24 UTC

The URL seems to be valid, we can go to the website.

The domain 0s48.info is blacklisted, but the spammer continues to spam:
http://bo.wiktionary.org/w/index.php?title=Wiktionary:General_disclaimer&curid=1557&diff=4200&oldid=4162
http://bs.wiktionary.org/w/index.php?title=Wiktionary:General_disclaimer&diff=4654&oldid=4599
http://la.wiktionary.org/w/index.php?title=Current_events&diff=prev&oldid=19872

Comment 3 Brion Vibber 2005-12-24 09:55:28 UTC

It's invalid in that the "]" character is explicitly disallowed in URLs. Some software is lax in 
treating this.

Comment 4 Brion Vibber 2005-12-24 10:09:51 UTC

Any such invalid links are now broken.

Comment 5 Korg 2005-12-24 10:17:06 UTC

Thanks Brion!

Comment 6 Florian Steinel 2005-12-27 16:51:13 UTC

*** Bug 4384 has been marked as a duplicate of this bug. ***

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