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Moderately critical

ZyXEL ZyWALL Appliances Multiple Authentication Bypass Vulnerabilities

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Release Date:  2011-05-12    Views:  2,226

Secunia Advisory SA44356

Where:

From local network

Impact:

Security Bypass

Solution Status:

Vendor Patch

Operating System:

CVE Reference(s):

No CVE references.

Description


Some vulnerabilities have been reported in ZyXEL ZyWALL appliances, which can be exploited by malicious users and malicious people to bypass certain security restrictions.

1) An error exists within the authentication mechanism in the cgi-bin/export-cgi script, which can be exploited to download the configuration files.

2) An error exists within the authentication mechanism in the cgi-bin/file_upload-cgi script, which can be exploited to upload the arbitrary configuration files and gain administrative access to the device.

3) An error within the authentication mechanism in the management web interface can be exploited to gain administrative privileges to the device by setting the "isAdmin" variable to "true".

Successful exploitation of this vulnerability requires "limited-admin" privileges.

The vulnerabilities have been reported in the following devices:
* ZyWALL USG-20
* ZyWALL USG-20W
* ZyWALL USG-50
* ZyWALL USG-100
* ZyWALL USG-200
* ZyWALL USG-300
* ZyWALL USG-1000
* ZyWALL USG-1050
* ZyWALL USG-2000


Solution:
Reportedly, the vulnerabilities are fixed in the firmware released on April 25th, 2011. Please contact the vendor for more information.

Provided and/or discovered by:
RedTeam Pentesting.

Original Advisory:
RedTeam Pentesting:
http://www.redteam-pentesting.de/advisories/rt-sa-2011-003.txt
http://www.redteam-pentesting.de/advisories/rt-sa-2011-004.txt

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: ZyXEL ZyWALL Appliances Multiple Authentication Bypass Vulnerabilities

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