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Insecure Library Loading
Highly critical

Webmin "miniserv.pl" Perl Format String Vulnerability

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Release Date:  2005-11-29    Last Update:  2005-12-22    Views:  18,727

Secunia Advisory SA17749

Where:

From remote

Impact:

DoS, System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Jack Louis has discovered a vulnerability in Webmin, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially to compromise a vulnerable system.

The vulnerability is caused due to a format string error in the "miniserv.pl" script when logging failed authentication attempts. This can be exploited to consume a large amount of CPU and memory resources on a vulnerable system by attempting to login with a specially crafted username.

It has also been reported that the vulnerability can be exploited in conjunction with a vulnerability in Perl for arbitrary code execution. However, this has not been shown.

For more information:
SA17802

The vulnerability has been confirmed in version 1.240. Other versions may also be affected.


Solution:
Update to version 1.250.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Jack Louis, Dyad Security

Original Advisory:
http://www.dyadsecurity.com/webmin-0001.html

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: Webmin "miniserv.pl" Perl Format String Vulnerability

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