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Webmin "miniserv.pl" Perl Format String Vulnerability
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Secunia Advisory:
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SA17749
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Release Date:
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2005-11-29
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Last Update:
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2005-12-22
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Critical:
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Highly critical
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Impact:
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DoS
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: | Webmin 1.x
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| | CVE reference: | CVE-2005-3912 (Secunia mirror)
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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.
http://www.webmin.com/
Provided and/or discovered by:
Jack Louis, Dyad Security
Changelog:
2005-11-30: Updated "Solution" section.
2005-12-05: Added CVE reference.
2005-12-22: Updated "Name", "Critical" and "Description" sections.
Original Advisory:
http://www.dyadsecurity.com/webmin-0001.html
Other References:
SA17802:
http://secunia.com/advisories/17802/
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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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