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Novell Client NWSPOOL.DLL Buffer Overflow Vulnerabilities
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Secunia Advisory:
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SA23027
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Release Date:
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2006-11-21
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Last Update:
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2007-06-11
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Popularity:
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10,523 views
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Critical:
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Moderately critical
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Impact:
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DoS
System access
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Where:
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From local network
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Solution Status:
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Vendor Patch
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| Software: | Novell Client for Windows NT/2000/XP 4.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2006-5854
CVE-2006-6114
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Description:
Some vulnerabilities have been reported in Novell Client, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerabilities exist due to boundary errors within the Spooler service in the functions "OpenPrinter()" and "EnumPrinters()" in NWSPOOL.DLL. These can be exploited to cause buffer overflows via overly large arguments (458 or more characters as the first argument to "OpenPrinter()" or 524 or more characters, followed by an exclamation point, as the second argument to "EnumPrinters()") in RPC requests and may allow execution of arbitrary code.
The vulnerabilities are reported in version 4.91 SP2. Other versions may also be affected.
Solution:
Apply patch.
http://support.novell.com/servlet/filedownload/uns/ftf/491psp3_nwspool.exe
Provided and/or discovered by:
Discovered by an anonymous person and reported by Tipping Point and the Zero Day Initiative.
Changelog:
2006-11-28: Added CVE reference.
2006-11-30: Updated "Title" and "Description". Added information provided by vendor and ZDI.
2006-12-20: Added links to US-CERT.
2007-01-08: Updated "Solution Status" and "Solution" sections to include patch information.
2007-06-11: Updated "Description" section with additional information provided by the vendor.
Original Advisory:
Novell:
https://secure-support.novell.com/Kan...lishing/583/3125538_f.SAL_Public.html
http://support.novell.com/cgi-bin/search/searchtid.cgi?/2974765.htm
ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-06-043.html
Other References:
US-CERT VU#300636:
http://www.kb.cert.org/vuls/id/300636
US-CERT VU#653076:
http://www.kb.cert.org/vuls/id/653076
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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