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Zero Day Initiative Advisory 11-169

Zero Day Initiative Advisory 11-169
Posted Jun 1, 2011
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 11-169 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of IBM Tivoli Endpoint. Authentication is required to exploit this vulnerability, however it is trivially achieved. The specific flaw exists within the lcfd.exe process which listens by default on TCP port 9495. To reach this page remotely authentication is required. However, by abusing a built-in account an attacker can access the restricted pages. While parsing requests to one of these, the process blindly copies the contents of a POST variable to a 256 byte stack buffer. This can be leveraged by a remote attacker to execute arbitrary code under the context of the SYSTEM user.

tags | advisory, remote, arbitrary, tcp
advisories | CVE-2011-1220
SHA-256 | 285e5b56f3b5a1ce6fb8f0683bf97b8bc3d0b7e2e10fa74b7e0621552c83cec0

Zero Day Initiative Advisory 11-169

Change Mirror Download
ZDI-11-169: IBM Tivoli Endpoint lcfd.exe opts Argument Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-169

May 31, 2011

-- CVE ID:
CVE-2011-1220

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

-- Affected Vendors:
IBM

-- Affected Products:
IBM Tivoli Endpoint

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 11237.
For further product information on the TippingPoint IPS, visit:

http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of IBM Tivoli Endpoint. Authentication is
required to exploit this vulnerability, however it is trivially
achieved.

The specific flaw exists within the lcfd.exe process which listens by
default on TCP port 9495. To reach this page remotely authentication is
required. However, by abusing a built-in account an attacker can access
the restricted pages. While parsing requests to one of these, the
process blindly copies the contents of a POST variable to a 256 byte
stack buffer. This can be leveraged by a remote attacker to execute
arbitrary code under the context of the SYSTEM user.

-- Vendor Response:
IBM has issued an update to correct this vulnerability. More
details can be found at:

https://www-304.ibm.com/support/docview.wss?uid=swg21499146

-- Disclosure Timeline:
2010-11-23 - Vulnerability reported to vendor
2011-05-31 - Coordinated public release of advisory

-- 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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