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Rule:
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Sid:
1963
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Summary:
The RQUOTA daemon is an RPC server that returns quotas for users on the
local file systems.
Some versions of solaris ship with a vulnerable version of snoop that
attempts to parse RQUOTA GETQUOTA requests. Snoop contains a boundary
condition error that could result in a buffer overflow that will present
the attacker with super user access to the target host.
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Impact:
Complete control of the target machine.
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Detailed Information:
The sniffing program named snoop is installed on certain version of Sun
Solaris.
When run by the super-user, snoop will monitor network traffic on the
host's network segment. When snoop attempts to decode RQUOTA GETQUOTA
requests, snoop does not properly handle user supplied data resulting in
a buffer overflow.
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Affected Systems:
Sun Solaris 2.4, 2.5, 2.5.1, 2.6, 2.7 for SPARC and Intel architectures
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Attack Scenarios:
The attacker must send specially crafted packets past a network segment
monitored by vulnerable versions of snoop
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Ease of Attack:
Simple
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False Positives:
None Known
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False Negatives:
None Known
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Corrective Action:
Apply the appropriate patches for each affected system.
Use a different network monitoring tool other than snoop.
Disallow all RPC requests from external sources and use a firewall to
block access to RPC ports from outside the LAN.
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Contributors:
Sourcefire Research Team
Brian Caswell <bmc@sourcefire.com>
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Additional References:
Bugtraq:
http://www.securityfocus.com/bid/864
CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-1999-0974
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