Novell Netware CIFS.NLM buffer overflow

netware-cifsnlm-bo (59501)

High Risk

Description:

Novell Netware is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by in CIFS.NLM. By sending a specially-crafted Session Setup AndX SMB packet containing an overly long AccountName, a remote attacker could overflow a buffer and execute arbitrary code on the system with kernel privileges or cause the server to crash.

*CVSS:

Base Score:	10
Access Vector:	Network
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	Complete
Integrity Impact:	Complete
Availability Impact:	Complete
Temporal Score:	7.8
Exploitability:	Proof-of-Concept
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Gain Access

Remedy:

Refer to Novell Document ID: 5076512 for patch, upgrade or suggested workaround information. See References.

References:

• Novell Document ID: 5076512: NSS Update for NetWare 6.5 Support Pack 8 2.0.
• SS-2010-006 : Netware SMB Remote Stack Overflow .
• BID-40908: Novell Netware SMB Remote Buffer Overflow Vulnerability
• CVE-2010-2351: Stack-based buffer overflow in the CIFS.NLM driver in Netware SMB 1.0 for Novell Netware 6.5 SP8 and earlier allows remote attackers to execute arbitrary code via a Sessions Setup AndX packet with a long AccountName.
• OSVDB ID: 65625: Novell NetWare CIFS.NLM Session Setup AndX Packet AccountName Value Overflow
• SA40199: Novell NetWare SMB AccountName Buffer Overflow Vulnerability
• VUPEN/ADV-2010-1514: Novell NetWare CIFS.NLM SMB Request Buffer Overflow Vulnerability

Platforms Affected:

• Novell NetWare 6.0
• Novell NetWare 6.5

Reported:

Jun 17, 2010

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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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