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[ GLSA 200704-08 ] DokuWiki: Cross-site scripting vulnerability
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GLSA
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PostPosted: Thu Apr 12, 2007 2:26 pm    Post subject: [ GLSA 200704-08 ] DokuWiki: Cross-site scripting vulnerabil Reply with quote

Gentoo Linux Security Advisory

Title: DokuWiki: Cross-site scripting vulnerability (GLSA 200704-08)
Severity: low
Exploitable: remote
Date: April 12, 2007
Bug(s): #163781
ID: 200704-08

Synopsis


DokuWiki is vulnerable to a cross-site scripting attack.


Background


DokuWiki is a simple to use wiki aimed at creating documentation.


Affected Packages

Package: www-apps/dokuwiki
Vulnerable: < 20061106
Unaffected: >= 20061106
Architectures: All supported architectures


Description


DokuWiki does not sanitize user input to the GET variable 'media' in
the fetch.php file.


Impact


An attacker could entice a user to click a specially crafted link and
inject CRLF characters into the variable. This would allow the creation
of new lines or fields in the returned HTTP Response header, which
would permit the attacker to execute arbitrary scripts in the context
of the user's browser.


Workaround


Replace the following line in lib/exe/fetch.php:
Code:
$MEDIA = getID('media',false); // no cleaning - maybe external

with
Code:
$MEDIA = preg_replace('/[x00-x1F]+/s','',getID('media',false));


Resolution


All DokuWiki users should upgrade to the latest version:
Code:
# emerge --sync
    # emerge --ask --oneshot --verbose ">=www-apps/dokuwiki-20061106"


References

CVE-2006-6965


Last edited by GLSA on Sat Oct 27, 2012 4:24 am; edited 2 times in total
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