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Sun Solaris TCP Implementation SYN Flood Denial of Service
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Secunia Advisory:
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SA30131
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Release Date:
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2008-05-08
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Last Update:
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2008-08-04
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Popularity:
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5,251 views
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Critical:
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Less critical
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Impact:
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DoS
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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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| OS: | Sun Solaris 10
Sun Solaris 8
Sun Solaris 9
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| CVE reference: | CVE-2008-2121
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Description:
A vulnerability has been reported in Sun Solaris, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an error within the TCP implementation and can be exploited to e.g. cause network connections to time out or to cause certain systems to consume large amounts of CPU resources via a TCP SYN flood.
The impact of a DoS is decreased If the ndd(1M) tunable "tcp_conn_req_max_q0" is set to a value less than the default value of 1024.
The vulnerability is reported in Solaris 8, 9, and 10 for both the SPARC and x86 platforms.
Solution:
Apply patches.
-- SPARC platform --
Solaris 8:
Apply patch 116965-33 or later.
Solaris 9:
Apply patch 114344-35 or later.
Solaris 10:
Apply patch 119998-01 or later.
-- x86 platform --
Solaris 8:
Apply patch 116966-32 or later.
Solaris 9:
Apply patch 119435-23 or later.
Solaris 10:
Apply patch 119999-01 or later.
Provided and/or discovered by:
Reported by the vendor.
Changelog:
2008-05-13: Added CVE reference.
2008-08-04: Updated information about "tcp_conn_req_max_q0" in "Description" based updated vendor advisory. Updated "Extended Solution".
Original Advisory:
Sun (200864):
http://sunsolve.sun.com/search/document.do?assetkey=1-66-200864-1
Extended Solution:
The "Extended Solution" section is available for Secunia customers only. Request a trial and get access to the Secunia Customer Area and Extended Secunia advisories.
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About this Secunia Advisory
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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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