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Bug 207955 - CVE-2006-4924 openssh DoS
CVE-2006-4924 openssh DoS
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: openssh (Show other bugs)
4.0
All Linux
medium Severity medium
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Assigned To: Tomas Mraz
Brian Brock
reported=20060919,public=20060919,sou...
: Security
: 208352 (view as bug list)
Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2006-09-25 11:29 EDT by Josh Bressers
Modified: 2012-06-21 12:18 EDT (History)
2 users (show)

See Also:
Fixed In Version: RHSA-2006-0697
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2006-09-28 20:18:13 EDT
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CRM:
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RHEL 7.3 requirements from Atomic Host:


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Description Josh Bressers 2006-09-25 11:29:01 EDT
Tavis Ormandy of the Google Security Team discovered a denial of service attack
on the openssh sshd daemon when ssh protocol version 1 is enabled.  This flaw
will cause the openssh server to consume a large quantity of the CPU until the
specified timeout is reached.

The upstream patches can be found here:
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/deattack.c.diff?r1=1.29&r2=1.30&sortby=date&f=h
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/packet.c.diff?r1=1.143&r2=1.144&sortby=date&f=h
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/deattack.h.diff?r1=1.9&r2=1.10&sortby=date&f=h
Comment 1 Josh Bressers 2006-09-25 11:30:33 EDT
This issue also affects RHEL2.1 and RHEL3
Comment 6 Josh Bressers 2006-09-28 12:19:55 EDT
*** Bug 208352 has been marked as a duplicate of this bug. ***
Comment 9 Red Hat Bugzilla 2006-09-28 20:18:13 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2006-0697.html

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