File: 2103.txt

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Rule:  

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Sid: 2103

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Summary:

A buffer overflow exists in the Samba file and print sharing software 
that can allow a remote attacker to gain root privileges on the target 
script to exploit this vulnerability.

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Impact:

An attacker can cause the target system running Samba to overflow a 
buffer presenting the attacker with root privileges.

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Detailed Information:
It is possible for an anonymous user to cause a buffer overflow in a 
character array by sending data greater than 1024 bytes to the variable 
pname. This information is copied by another function causing the buffer
overflow.

Affected Systems:
Samba versions 2.2.5 to 2.2.8

may indicate an attacker verifying the root shell.

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Attack Scenarios:
The attacker needs to send pname a value larger than 1024 bytes.

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Ease of Attack:
Simple, an exploit script exists.

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False Positives:
None known.

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False Negatives:
No false negatives are known at this time.

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Corrective Action:
Upgrade to Samba versions 2.2.8a or Samba-TNG.

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Contributors:
Sourcefire Research Team
Brian Caswell <bmc@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References:

Digital Defense
http://www.digitaldefense.net/labs/advisories/DDI-1013.txt

CVE
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0201

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