full-disclosure - ZDI-12-167 : (0Day) Novell File Reporter NFRAgent.exe VOL Tag Remote Code Execution Vulnerability

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Message-ID: <04F9AFDCA6560B42B91DB1A429B7D0DE05534390@G1W3778.americas.hpqcorp.net>
Date: Wed, 29 Aug 2012 13:41:46 +0000
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'full-disclosure@...ts.grok.org.uk'" <full-disclosure@...ts.grok.org.uk>, 
	"'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com>
Cc: ZDI Disclosures <zdi-disclosures@...com>
Subject: ZDI-12-167 : (0Day) Novell File Reporter
 NFRAgent.exe VOL Tag Remote Code Execution Vulnerability

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ZDI-12-167 : (0Day) Novell File Reporter NFRAgent.exe VOL Tag Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-167
August 29, 2012

- -- CVE ID:

- -- CVSS:
10, AV:N/AC:L/Au:N/C:C/I:C/A:C

- -- Affected Vendors:
Novell

- -- Affected Products:
Novell File Reporter

- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Novell File Reporter Agent. Authentication is
not required to exploit this vulnerability.

The specific flaw exists within NFRAgent.exe which communicates with the
Agent component over HTTPS on TCP port 3037. When parsing tags inside the
VOL element, the process performs insufficient bounds checking on
user-supplied data prior to copying it into a fixed-length buffer on the
stack. This vulnerability can result in remote code execution under the
context of the SYSTEM account.

- -- Vendor Response:

- -- Mitigation:
Given the stated purpose of File Reporter, and the nature of the
vulnerability, the only salient mitigation strategy is to restrict
interaction with the service to trusted machines. Only the clients and
servers that have a legitimate procedural relationship with the Novell File
Reporter Agent should be permitted to communicate with it. This could be
accomplished in a number of ways, most notably with firewall
rules/whitelisting. These features are available in the native Windows
Firewall, as described in
http://technet.microsoft.com/en-us/library/cc725770%28WS.10%29.aspx and
numerous other Microsoft Knowledge Base articles.

- -- Disclosure Timeline:
2011-10-21 - Vulnerability reported to vendor
2012-08-29 - 0Day advisory released in accordance with the ZDI 180 day
deadline policy

- -- Credit:
This vulnerability was discovered by:
* Tenable Network Security

- -- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents 
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

    http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

    http://www.zerodayinitiative.com/advisories/disclosure_policy/

Follow the ZDI on Twitter:

    http://twitter.com/thezdi

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