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MyBB Cross-Site Scripting and Script Insertion Vulnerabilities
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Secunia Advisory:
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SA21697
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Release Date:
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2006-08-31
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Last Update:
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2006-09-18
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Popularity:
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8,035 views
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Critical:
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Moderately critical
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Impact:
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Cross Site Scripting
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | MyBB (formerly MyBulletinBoard) 1.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2006-4707
CVE-2006-4706
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Description:
imei addmimistrator has reported two vulnerabilities in MyBB, which can be exploited by malicious people to conduct cross-site scripting and script insertion attacks.
1) Input passed via the "url" BBcode tag when posting isn't properly sanitised before being used. This can be exploited to inject arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site when a link with the "javascript:" URI handler from a malicious post is followed.
Example:
[url]java& 115;cript://%0a%0[code];[/url]
2) Input passed via the URL path in admin/index.php isn't properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
Example:
http://[host]/admin/index.php/[code]
The vulnerabilities have been reported in version 1.1.7. Prior versions may also be affected.
Solution:
Update to version 1.1.8.
http://www.mybboard.com/downloads.php
Provided and/or discovered by:
imei addmimistrator
Changelog:
2006-09-18: Added CVE references.
Original Advisory:
http://myimei.com/security/2006-08-15...-functions_postphp-urlxss-attack.html
http://myimei.com/security/2006-08-17/mybb-117-adminglobalphp-xss-attack.html
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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