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PostNuke Multiple Vulnerabilities
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Secunia Advisory:
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SA18937
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Release Date:
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2006-02-21
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Last Update:
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2006-02-23
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Popularity:
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8,537 views
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Critical:
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Moderately critical
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Impact:
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Security Bypass
Cross Site Scripting
Manipulation of data
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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: | PostNuke 0.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2006-0800
CVE-2006-0801
CVE-2006-0802
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Description:
Maksymilian Arciemowicz has reported some vulnerabilities in PostNuke, which can be exploited by malicious people to conduct cross-site scripting and SQL injection attacks, and to bypass certain security restrictions.
1) It is possible to bypass the HTML tag filter implemented in "pnVarCleanFromInput()" and "pnAntiCracker()" via specially-crafted HTML tags.
Example:
<HTMLTAG? <
2) Input passed to the "htmltext" parameter in user.php and to the "language" parameter in the NS-Languages module 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]/user.php?op=edituser&htmltext=[code]
http://[host]/admin.php?module=NS-Languages&op=missing&language=">[code]
http://[host]/admin.php?module=NS-Languages&op=translation&language=[code]
3) An access control error in admin.php can be exploited to access certain modules like NS-Languages and Banners without requiring admin privilege.
Example:
http://[host]/admin.php?module=NS-Languages
http://[host]/admin.php?module=Banners
4) Input passed to the "language" parameter in the NS-Languages module isn't properly sanitised before being used in a SQL query. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.
Example:
http://[host]/admin.php?module=NS-Languages&op=missing&language=[sql]
Successful exploitation requires that "magic_quotes_gpc" is disabled.
The vulnerabilities have been reported in version 0.761 and prior.
Solution:
Update to version 0.762.
http://news.postnuke.com/Downloads-req-viewdownload-cid-1.html
Provided and/or discovered by:
Maksymilian Arciemowicz
Changelog:
2006-02-23: Added CVE references.
Original Advisory:
PostNuke:
http://news.postnuke.com/index.php?name=News&file=article&sid=2754
SecurityReason:
http://securityreason.com/achievement_securityalert/33
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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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