(Sun Issues Fix) OpenSSH SSH v1 CRC Attack Detection Implementation Lets Remote Users Deny Service
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SecurityTracker Alert ID: 1018214 |
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SecurityTracker URL: http://securitytracker.com/id/1018214
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CVE Reference:
CVE-2006-4924
(Links to External Site)
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Updated: Jun 29 2007
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Original Entry Date: Jun 11 2007
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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:
Sun has issued the following fixes.
SPARC Platform
* Solaris 9 with patch 113273-15 or later
* Solaris 10 with patch 123324-03 or later
x86 Platform
* Solaris 9 with patch 114858-12 or later
* Solaris 10 with patch 123325-03 or later
The Sun advisory is available at:
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102962-1
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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 (Solaris - SunOS)
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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: Mon, 11 Jun 2007 16:16:28 -0400
Subject: Security Vulnerability in the sshd(1M) Protocol Version 1 Implementation May Allow a Denial of Service to the Host
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http://sunsolve.sun.com/search/document.do?assetkey=1-26-102962-1
CVE-2006-4924
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