Novell iManager TREE Parameter NULL Pointer Dereference Lets Remote Users Deny Service
SecurityTracker Alert ID: 1017139|
SecurityTracker URL: http://securitytracker.com/id/1017139
(Links to External Site)
Date: Nov 1 2006
Denial of service via network|
Fix Available: Yes Vendor Confirmed: Yes |
A vulnerability was reported in Novell iManager. A remote user can cause denial of service conditions.|
A remote user can send an HTTP POST request with a specially crafted TREE parameter to trigger a NULL pointer dereference and cause the Tomact server to crash. A string of more than 256 bytes can trigger the flaw.
The vendor was notified on August 17, 2006.
CIRT.DK discovered this vulnerability. iDefense reported this vulnerability.
A remote user can cause denial of service conditions.|
The vendor has issued a fixed version (2.6).|
Vendor URL: www.novell.com/ (Links to External Site)
|Underlying OS: Linux (Red Hat Enterprise), Linux (SuSE), UNIX (HP/UX), UNIX (Solaris - SunOS), Windows (2000), Windows (2003), Windows (XP)|
Source Message Contents
Subject: iDefense Security Advisory 10.31.06: Novell iManager Tomcat DoS|
Novell iManager Tomcat DoS Vulnerability
iDefense Security Advisory 10.31.06
Oct 31, 2006
iManager is a management portal for Novell's eDirectory server. More
information about iManager is available at the link shown.
Remote exploitation of a DoS vulnerability in Novell Inc.'s iManager
could allow attackers to crash the iManager Tomcat server.
The vulnerability specifically exists due to improper handling of a an
HTTP POST request with a long TREE parameter. When such a request is
received, a NULL pointer dereference occurs, leading to a crash of the
service. iDefense Labs testing has indicated that any string longer than
256 bytes will be effective.
Exploitation requires that an attacker send a specially constructed HTTP
request to the server. This crashes the server, making it unusable until
it is restarted.
iDefense has confirmed this vulnerability in Novell iManager 2.5. All
previous versions are suspected vulnerable.
iDefense is currently unaware of any workarounds for this issue.
VI. VENDOR RESPONSE
Novell has addressed this vulnerability within iManager version 2.6.
Upgrading to this version will alleviate exposure to the vulnerability.
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2006-4517 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org), which standardizes names for
VIII. DISCLOSURE TIMELINE
08/17/2006 Initial vendor notification
08/18/2006 Initial vendor response
10/06/2006 Second vendor notification
10/31/2006 Coordinated public disclosure
This vulnerability was reported to iDefense by CIRT.DK.
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