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Category:   Application (Generic)  >   Novell Remote Manager Vendors:   Novell
Novell Remote Manager for SUSE Linux Content-Length Heap Overflow Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1015487
SecurityTracker URL:  http://securitytracker.com/id/1015487
CVE Reference:   CVE-2005-3655   (Links to External Site)
Date:  Jan 13 2006
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   iDEFENSE reported a vulnerability in Novell Remote Manager for SUSE Linux. A remote user can execute arbitrary code on the target system.

A remote user can supply an HTTP POST request with a specially crafted negative Content-Length parameter to trigger a heap overflow and execute arbitrary code.

A demonstration exploit request is of the following form:

POST / HTTP/1.0
Content-Length: -900

DATA_THAT_WILL_BE_USED_TO_OVERWRITE_THE_HEAP

The vendor was notified on November 15, 2005.

The original advisory is available at:

http://www.idefense.com/application/poi/display?type=vulnerabilities

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix.

The vendor's advisory is available at:

http://www.novell.com/linux/security/advisories/2006_02_novellnrm.html

[Editor's note: The URL was not yet active at the time of this entry.]

Vendor URL:  www.novell.com/linux/security/advisories/2006_02_novellnrm.html (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (SuSE)

Message History:   None.


 Source Message Contents

Subject:  iDefense Security Advisory 01.13.06: Novell SUSE Linux Enterprise

Novell SUSE Linux Enterprise Server Remote Manager Heap Overflow

iDefense Security Advisory 01.13.06
http://www.idefense.com/application/poi/display?type=vulnerabilities
January 13, 2006

I. BACKGROUND

Novell SUSE Linux Enterprise Server is a platform for open source
computing in an enterprise environment.

II. DESCRIPTION

Remote exploitation of a heap overflow vulnerability in Novell Inc.'s
Open Enterprise Server Remote Manager allows attackers to execute
arbitrary code.

III. ANALYSIS

The vulnerability specifically exists due to improper handling of a an
HTTP POST request with a negative Content-Length paramater. When such a
request is received, controllable heap corruption occurs which can lead
to the execution of arbitrary code using traditional Linux heap overflow
methods. The following HTTP request can be used to trigger this
vulnerability.

  POST / HTTP/1.0
  Content-Length: -900

  DATA_THAT_WILL_BE_USED_TO_OVERWRITE_THE_HEAP

iDefense Labs testing has determined that with careful manipulation of
the string, an arbitrary 4 byte write may be achieved which can be used
to gain execution control.

IV. DETECTION

iDefense has confirmed this vulnerability in Novell SUSE Linux
Enterprise Server 9. All previous versions are suspected vulnerable.
Novell SUSE Linux Enterprise Server components are included in Novell
Open Enterprise Server; as such, Open Enterprise Server is also
vulnerable.

V. WORKAROUND

iDefense is currently unaware of any workarounds for this issue.

VI. VENDOR RESPONSE

Novell has released the following advisories to address this issue:

  http://portal.suse.com/psdb/1af470a99a736eb966cc0e52fb71ee98.html
  
http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/1af470a99a736eb966cc0e52fb71ee98.html

SUSE has released the following advisories to address this issue:

  http://www.novell.com/linux/security/advisories/2006_02_novellnrm.html

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2005-3655 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org), which standardizes names for
security problems.

VIII. DISCLOSURE TIMELINE

11/15/2005  Initial vendor notification
11/15/2005  Initial vendor response
01/13/2006  Coordinated public disclosure

IX. CREDIT

The discoverer of this vulnerability wishes to remain anonymous.

Get paid for vulnerability research
http://www.idefense.com/poi/teams/vcp.jsp

Free tools, research and upcoming events
http://labs.idefense.com

X. LEGAL NOTICES


Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically, please
email customerservice@idefense.com for permission.

Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct, indirect,
or consequential loss or damage arising from use of, or reliance on,
this information.
_______________________________________________
To unsubscribe, go here:
http://www.idefense.com/mailman/listinfo/idlabs-advisories
 
 


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