(HP Issues Fix) WU-FTPD wu_fnmatch() Globbing Error Lets Remote Users Deny Service
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SecurityTracker Alert ID: 1015875 |
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SecurityTracker URL: http://securitytracker.com/id/1015875
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CVE Reference:
CVE-2005-0256
(Links to External Site)
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Date: Apr 6 2006
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Impact:
Denial of service via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 2.6.1, 2.6.2; possibly earlier versions
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Description:
iDEFENSE reported a vulnerability in WU-FTPD. A remote authenticated user can cause denial of service conditions.
The wu_fnmatch() function in 'wu_fnmatch.c' does not properly process strings containing an asterik ('*') character. A remote authenticated user can supply a string with a large number of asterik characters to cause the target system to consume excessive resources.
A demonstration exploit command is provided:
ftp> dir ***************************************************************
***************************************************************
***************************************************************
**.*
The vendor was notified on February 9, 2005, without response.
Adam Zabrocki (pi3 / pi3ki31ny) discovered this vulnerability.
The original advisory is available at:
http://www.idefense.com/application/poi/display?id=207&type=vulnerabilities
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Impact:
A remote user can cause the ftp daemon to consume excessive resources on the target system.
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Solution:
HP has issued the following patches, available at:
http://itrc.hp.com
B.11.23 PHNE_34306
B.11.11 PHNE_34544
B.11.00 PHNE_34543
HP has also issued the following software updates, available at:
http://www.hp.com/go/softwaredepot
B.11.11: revision B.11.11.01.008 or subsequent.
B.11.00: revision B.11.00.01.006 or subsequent.
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Vendor URL: www.wu-ftpd.org/ (Links to External Site)
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Cause:
Input validation error
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Underlying OS:
UNIX (HP/UX)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Thu, 6 Apr 2006 08:13:46 -0400
Subject: HPSBUX02110 SSRT061110 rev.1 - HP-UX Running wu-ftpd Remote Denial of Service (DoS)
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http://www2.itrc.hp.com/service/cki/docDisplay.do?docId=c00637342
CVE-2005-0256
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