(HP Issues Fix for HP-UX Secure Shell) OpenSSH SSH v1 CRC Attack Detection Implementation Lets Remote Users Deny Service
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SecurityTracker Alert ID: 1017335 |
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SecurityTracker URL: http://securitytracker.com/id/1017335
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CVE Reference:
CVE-2006-4924
(Links to External Site)
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Date: Dec 5 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): 4.3 and prior versions
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Description:
A vulnerability was reported in OpenSSH. A remote user can cause denial of service conditions.
A remote user can cause the target OpenSSH service to consume excessive CPU resources when SSH protocol version 1 is enabled.
The flaw resides in the CRC attack detection function in the processing of identical blocks.
Tavis Ormandy of the Google Security Team discovered this vulnerability.
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Impact:
A remote user can cause the target service to consume excessive CPU resources.
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Solution:
HP has issued fixes for HP Secure Shell (T1471AA), available at:
http://h20293.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=T1471AA
HP-UX B.11.00 - HP-UX Secure Shell A.04.40.006
HP-UX B.11.11 - HP-UX Secure Shell A.04.40.006
HP-UX B.11.23 - HP-UX Secure Shell A.04.40.007
The HP advisory is available at:
http://www2.itrc.hp.com/service/cki/docDisplay.do?docId=c00815112
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Vendor URL: www.openssh.org/ (Links to External Site)
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Cause:
State 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: Tue, 5 Dec 2006 09:13:58 -0500
Subject: HPSBUX02178 SSRT061267 rev.1 - HP-UX Secure Shell Remote Denial of Service (DoS)
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http://www2.itrc.hp.com/service/cki/docDisplay.do?docId=c00815112
CVE-2006-0225, CVE-2006-4924
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