bugtraq - ZDI-08-027: CA BrightStor ARCserve Backup Arbitrary File Writing Vulnerability

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Date: Mon, 19 May 2008 17:02:21 -0500
From: zdi-disclosures@...m.com
To: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Cc: zdi-disclosures@...m.com
Subject: ZDI-08-027: CA BrightStor ARCserve Backup Arbitrary File Writing
 Vulnerability

ZDI-08-027: CA BrightStor ARCserve Backup Arbitrary File Writing 
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-027

-- CVE ID:
CVE-2008-2241

-- Affected Vendors:
Computer Associates

-- Affected Products:
Computer Associates BrightStor ARCserve Server

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 4685. 
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 Computer Associates ARCserve Backup.
Authentication is not required exploit this vulnerability.

The specific flaw exists within the caloggerd log daemon during the
processing of log messages that contain directory traversal modifiers. A
lack of sanity checking on the provided path allows attackers to append
arbitrary data to a file of their choosing and can easily result in a
full system compromise.

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

https://support.ca.com/irj/portal/anonymous/phpsupcontent?contentID=176798

-- Disclosure Timeline:
2006-09-12 - Vulnerability reported to vendor

-- Credit:
This vulnerability was discovered by:
    * Damian Put <pucik@...rflow.pl>

-- 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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