Novell BorderManager Buffer Overflow in clntrust.exe Lets Remote Users Execute
SecurityTracker Alert ID: 1018882|
SecurityTracker URL: http://securitytracker.com/id/1018882
(Links to External Site)
Date: Nov 1 2007
Execution of arbitrary code via network, User access via network|
Fix Available: Yes Vendor Confirmed: Yes |
A vulnerability was reported in Novell BorderManager in the Client Trust component. A remote user can execute arbitrary code on the target system.|
A remote user can send a specially crafted Novell tree name to the Novell Client Trust component on UDP port 3024 to trigger a buffer overflow and execute arbitrary code on the target system. The code will run with the privileges of the target service.
The vendor was notified on July 17, 2007.
uvinc reported this vulnerability via Tipping Point.
A remote user can execute arbitrary code on the target system.|
The vendor has issued a patch.|
The Novell advisory is available at:
Vendor URL: download.novell.com/Download?buildid=AuOWp2Xsvmc~ (Links to External Site)
Source Message Contents
Subject: [Full-disclosure] ZDI-07-064: Novell Client Trust Heap Overflow|
ZDI-07-064: Novell Client Trust Heap Overflow Vulnerability
October 25, 2007
-- CVE ID:
-- Affected Vendor:
-- Affected Products:
-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Novell software which utilize the Novell
Client Trust. Authentication is not required to exploit this
The specific flaw exists in the Novell Client Trust application,
clntrust.exe, which listens by default on UDP port 3024 on Novell
client machines. During a validation request, the Client Trust process
copies a user-supplied Novell tree name until a wide-character
backslash or a NULL is encountered. If neither is found within the
data, the process will copy excess data which later overflows a static
buffer during a call to wsprintfA.
-- Vendor Response:
Novell has issued an update to correct this vulnerability. More details
can be found at:
-- Disclosure Timeline:
2007.07.17 - Vulnerability reported to vendor
2007.10.25 - Coordinated public release of advisory
This vulnerability was discovered by uvinc.
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