Update Protection against Novell Print Spooler Buffer Overflow Vulnerability
| Check Point Reference: | CPAI-2007-021 | |
| Date Published: | ||
| Severity: | ||
| Last Updated: | ||
| Source: | Secunia Advisory: SA23027 | |
| Industry Reference(s): | CVE-2006-5854 | |
| Protection Provided by: |
VPN-1
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| Who is Vulnerable? Novell Client for Windows version 4.91 and prior | ||
| Vulnerability Description A buffer overflow vulnerability has been discovered in Novell NetWare client. Novell NetWare is a network operating system for Microsoft Windows and Linux workstations/servers. The flaw is due to a boundary error in Novell NetWare client's Spooler service (nwspool.dll). The vulnerable service is included with the Novell Client for Microsoft Windows, and provides access to remote printing services via Remote Procedure Call (RPC). An attacker may exploit this vulnerability to execute arbitrary code on an affected system. |
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Update/Patch Available Apply patches: Novell |
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Vulnerability Details The vulnerability is due to an error in Novell NetWare client's Spooler service (nwspool.dll) that fails to properly handle long arguments passed to the 'OpenPrinter' or 'EnumPrinters' functions. A remote attacker can exploit this issue by specially crafting a malicious RPC request and sending it to the Print Spooler RPC interface of an affected system. Successful exploitation may allow remote code execution. |
Protection Overview
By enabling this protection, SmartDefense will detect and block malformed RPC requests.
In order for the protection to be activated, update your VPN-1/InterSpect product to the latest SmartDefense update. For information on how to update SmartDefense, go to SBP-2006-05, Protection tab and select the version of your choice.
To configure the defense, select your product from the list below and follow the related protection steps.
Additional Information
The Update released on February 22, 2007 includes the following protections:
AOL (CDDB) Control Buffer Overflow Vulnerability (CPAI-2007-013)
3Com TFTP Server Buffer Overflow Vulnerability (CPAI-2007-014)
IBM Tivoli Storage Manager Buffer Overflow Vulnerability (CPAI-2007-015)
CA BrightStor Discovery Buffer Overflow Vulnerability (CPAI-2007-016)
Symantec Veritas NetBackup Buffer Overflow Vulnerability (CPAI-2007-017)
Novell NetMail NMAP Buffer Overflow Vulnerability (CPAI-2007-018)
Citrix Presentation Remote Code Execution Vulnerability (CPAI-2007-019)
Microsoft Windows SNMP Memory Corruption Vulnerability (MS06-074) - CPAI-2007-020
Novell Print Spooler Buffer Overflow Vulnerability (CPAI-2007-021)
Novell eDirectory Denial of Service Vulnerability (CPAI-2007-022)
Microsoft Windows Print Spooler Service Denial of Service Vulnerability (CPAI-2007-023)
Multiple SNMP Vulnerabilities (SBP-2007-03)
VPN-1 NGX R62
How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence > MS-RPC > MS-RPC over CIFS > Block Netware Spooler Vulnerability.
2. In the configuration pane, under Settings > Mode, check Active.
3. Install policy on all modules.
How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: MS-RPC Enforcement Violation
Attack Information: Netware spooler vulnerability detected
VPN-1 NGX R61, R60 & VPN-1 NG with Application Intelligence R55W
How Can I Protect My Network?
1. In the SmartDefense tree, click Application Intelligence > MS-RPC > MS-RPC over CIFS.
2. Select the following:
Block Netware Spooler Vulnerability
3. Install policy on all modules.
How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: MS-RPC Enforcement Violation
Attack Information: Netware spooler vulnerability detected
VPN-1 NG with Application Intelligence R55
How Can I Protect My Network?
1. In the SmartDefense tree, click Application Intelligence > MS-RPC > MS-RPC over CIFS.
2. Select the following:
Block Netware Spooler Vulnerability
3. Install policy on all modules.
How Do I Know if My Network is Under Attack?
Rule #99457 will appear on the SmartView Tracker.
VPN-1 VSX NGX
How Can I Protect My Network?
1. In the SmartDefense tree, click Application Intelligence > MS-RPC > MS-RPC over CIFS.
2. Select the following:
Block Netware Spooler Vulnerability
3. Install policy on all modules.
How Do I Know if My Network is Under Attack?
Rule #99457 will appear on the SmartView Tracker.
InterSpect NGX
How Can I Protect My Network?
1. In the lefthand menu, click Profiles > Default Protection > SmartDefense. The SmartDefense page opens.
2. In the SmartDefense tree, click Application Intelligence > MS-RPC > MS-RPC over CIFS and enable the following protection:
Block Netware Spooler Vulnerability
3. Install security policy.
How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: MS-RPC Enforcement Violation
Attack Information: Netware spooler vulnerability detected
InterSpect 2.0
How Can I Protect My Network?
1. Click Application Intelligence > RPC > MS-RPC over CIFS and enable the following protection:
Block Netware Spooler Vulnerability
2. Install security policy.
How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: MS-RPC Enforcement Violation
Attack Information: Netware spooler vulnerability detected