Novell NetWare NFS mount daemon denial of service

netware-nfs-mount-dos (34878)

Medium Risk

Description:

Novell NetWare is vulnerable to a denial of service, caused by improper bounds checking by the NFS mount daemon. By sending a specially-crafted mount request containing an overly long mount path, a local attacker could exploit this vulnerability to cause a denial of service.

*CVSS:

Base Score:	2.5
Access Vector:	Local
Access Complexity:	Low
Authentication:	Not Required
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Partial
Temporal Score:	1.8
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Denial of Service

Remedy:

Refer to Novell Web site - Document ID: 5004900 for patch, upgrade, or suggested workaround information. See References.

References:

• Novell Security Alert 3319127: XNFS Abend in rpcWorkerThread if nfs mount is attempted with long path.
• Novell Web site - Document ID: 5004900: XNFS.NLM - abend fix for mount request overflow.
• BID-24489: Novell NetWare XNFS.NLM Remote Denial Of Service Vulnerability
• CVE-2007-3207: Buffer overflow in the NFS mount daemon (XNFS.NLM) in Novell NetWare 6.5 SP6, and probably earlier, allows remote attackers to cause a denial of service (abend) via a long path in a mount request.
• SA25697: Novell NetWare XNFS Buffer Overflow Vulnerability
• US-CERT VU#578105: Novell NetWare NFS denial of service vulnerability
• VUPEN/ADV-2007-2221: Novell NetWare NFS Server Mount Command Handling Buffer Overflow Vulnerability

Platforms Affected:

• Novell NetWare 6.5 SP6

Reported:

Jun 13, 2007

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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