Sun Solaris rpcbind Bug Lets Remote Users Deny Service on the System
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SecurityTracker Alert ID: 1006131 |
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SecurityTracker URL: http://securitytracker.com/id/1006131
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CVE Reference:
CVE-2003-1079
(Links to External Site)
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Updated: Jul 6 2008
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Original Entry Date: Feb 19 2003
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Impact:
Denial of service via local system, Denial of service via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): Solaris 2.6, 7, 8, 9
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Description:
A denial of service vulnerability was reported in Sun Solaris in rpcbind. A remote user can cause the system to consume all available memory.
A remote user can reportedly send specific UDP RPC packets to a target server to cause the target server to allocate large amounts of memory, eventually exhausting the swap space and disabling the system.
According to Sun, misbehaving RPC clients, hardware errors, or malicious local or remote users could generate the RPC packets required to cause this behavior.
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Impact:
A remote user can cause the target server to consume all available memory and become disabled.
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Solution:
Sun has issued the following fixes:
SPARC
Solaris 2.6: patch 105401-41
Solaris 7: patch 106942-24
Solaris 8: patch 108827-36
Solaris 9: patch 113319-04
Intel
Solaris 2.6: patch 105402-41
Solaris 7: patch 106943-24
Solaris 8: patch 108828-37
Solaris 2.5.1 users should upgrade to Solaris 2.6 (or later) and apply the appropriate patches.
According to Sun, Sun Alert document 50747 describes potential side effects of installing the above patches. However, upon analysis of the referenced Alert document, it is not clear what the vendor means.
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Vendor URL: sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F50626 (Links to External Site)
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Cause:
Exception handling error
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Message History:
None.
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Source Message Contents
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Subject: Sun Alert 50626
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http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F50626
Sun issued an alert (50626) warning of a denial of service vulnerability in Sun Solaris in rpcbind.
A remote user can reportedly send specific UDP RPC packets to a target server to cause the target
server to allocate large memory amounts, eventually exhausting the swap space and disabling the
system.
According to Sun, misbehaving RPC clients, hardware errors, or malicious local or remote users could
generate the RPC packets required to cause this behavior.
Solaris 2.5.1, 2.6, 7, 8, and 9 are affected. Sun will not evalute Solaris 2.5.1 to determine if it
is affected.
Several potential symptoms are described in the alert (see the above listed URL).
Sun has issued the following fixes:
SPARC
Solaris 2.6 with patch 105401-41 or later
Solaris 7 with patch 106942-24 or later
Solaris 8 with patch 108827-36 or later
Solaris 9 with patch 113319-04 or later
Intel
Solaris 2.6 with patch 105402-41 or later
Solaris 7 with patch 106943-24 or later
Solaris 8 with patch 108828-37 or later
Solaris 2.5.1 users should upgrade to Solaris 2.6 (or later) and apply the appropriate patches.
According to Sun, Sun Alert document 50747 describes potential side effects of installing the above
patches. However, upon analysis of the referenced Alert document, it is not clear what the vendor
means.
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Sun Alert ID: 50626
Synopsis: Certain UDP RPC Packets May Cause a Denial of Service in Solaris
Category: Security
Product: Solaris
BugIDs: 4680691
Avoidance: Patch
State: Resolved
Date Released: 18-Feb-2003
Date Closed: 18-Feb-2003
Date Modified:
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