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TYPO3 File Upload and Cross-Site Scripting Vulnerabilities
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Secunia Advisory:
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SA30619
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Release Date:
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2008-06-11
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Last Update:
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2008-06-20
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Popularity:
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2,719 views
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Critical:
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Moderately critical
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Impact:
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Cross Site Scripting
System access
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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: | TYPO3 3.x
TYPO3 4.x
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| | CVE reference: | CVE-2008-2717
CVE-2008-2718
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Description:
Two vulnerabilities have been reported in TYPO3, which can be exploited by malicious people to conduct cross-site scripting attacks, and by malicious users to compromise a vulnerable system.
1) The vulnerability is caused due to an error in the handling of file uploads, if a filename has multiple file extensions (e.g. "file.php.1") or starts with a dot character (e.g. ".htaccess"). This can be exploited to execute arbitrary code.
Successful exploitation of this vulnerability requires a certain server configuration. It also requires either valid backend user credentials and access to filemounts, or that frontend plugins using "t3lib_div::verifyFilenameAgainstDenyPattern()" or "processFiles()" to handle file uploads are installed.
2) Input passed in unspecified parameters to fe_adminlib.inc is not 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.
Successful exploitation of this vulnerability requires that a frontend extension based on fe_adminlib.inc is installed - e.g. direct_mail_subscription, feuser_admin, or kb_md5fepw.
The vulnerabilities are reported in all 3.x versions, 4.0.x versions below 4.0.9, 4.1.x versions below 4.1.7, and in 4.2.0.
Solution:
Update to version 4.0.9, 4.1.7, or 4.2.1.
Provided and/or discovered by:
1) The vendor credits Michiel Roos and Marcus Krause.
2) The vendor credits Christian Seifert, Jeroen van Iddekinge, and Arnd Messer.
Changelog:
2008-06-20: Added CVE reference.
Original Advisory:
TYPO3-20080611-1:
http://typo3.org/teams/security/security-bulletins/typo3-20080611-1/
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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.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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1st Dec, 2008
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