bugtraq - ZDI-11-058: SCO Openserver IMAP Daemon Long Verb Parsing Remote Code Execution Vulnerability

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Message-ID: <AF6E290B52139041BD6CA591212E455B575C3EB8F1@GVW0442EXB.americas.hpqcorp.net>
Date: Mon, 7 Feb 2011 23:22:11 +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>
Subject: ZDI-11-058: SCO Openserver IMAP Daemon Long Verb Parsing Remote
 Code Execution Vulnerability

ZDI-11-058: SCO Openserver IMAP Daemon Long Verb Parsing Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-058

February 7, 2011 - This vulnerability is being disclosed publicly without a patch in accordance with the ZDI 180 day deadline. To view mitigations for this vulnerability please see:  http://dvlabs.tippingpoint.com/blog/2011/02/07/zdi-disclosure-sco

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

-- Affected Vendors:
SCO

-- Affected Products:
SCO OpenServer

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 6535. 
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 the SCO OpenServer IMAP daemon.
Authentication is not required to exploit this vulnerability.

The specific flaw exists within the imapd process responsible for
handling remote IMAP requests. The process does not properly validate
IMAP commands and arguments. Supplying an overly long command followed
by an invalid argument can cause an exploitable overflow to occur. This
vulnerability can be leveraged to execute arbitrary code.

-- Disclosure Timeline:
2008-11-10 - Vulnerability reported to vendor
2011-02-07 - Public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Anonymous

-- 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/

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