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Secunia Research: CA BrightStor ARCserve Backup RPC Argument Parsing Vulnerabilities

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                     Secunia Research 11/10/2007

- CA BrightStor ARCserve Backup RPC Argument Parsing Vulnerabilities -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

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1) Affected Software

* BrightStor ARCserve Backup 11.x (for Windows)

NOTE: Other versions may also be affected.

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2) Severity

Rating: Moderately critical
Impact: System compromise
Where:  Local network

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3) Vendor's Description of Software

"It is a reliable and comprehensive data protection solution trusted
by hundreds of thousands users. It offers market-leading features,
functionality and performance to provide data protection that
minimizes costs, streamlines administrative tasks and operations and
is part of a comprehensive integrated recovery solution."

Product Link:
http://www.ca.com/us/products/product.aspx?id=4536

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4) Description of Vulnerability

Secunia Research has discovered multiple vulnerabilities in BrightStor
ARCserve Backup, which can be exploited by malicious people to
compromise a vulnerable system.

1) Boundary errors in the "cadbd" RPC service when handling string
arguments to a number of RPC procedures can be exploited to cause
stack-based buffer overflows via overly long string arguments.

2) The "cadbd" RPC service incorrectly uses "handle" RPC arguments in 
a number of RPC procedures as pointers, which can be exploited to
corrupt memory.

Successful exploitation allows execution of arbitrary code.

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5) Solution

Apply updates.
http://supportconnectw.ca.com/public/storage/infodocs/basb-secnotice.asp

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6) Time Table

29/06/2007 - Vendor notified.
29/06/2007 - Vendor response.
11/10/2007 - Public disclosure.

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7) Credits

Discovered by Dyon Balding, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2007-5330 for the vulnerabilities.

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9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://corporate.secunia.com/

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private
individuals, who are interested in or concerned about IT-security.

http://secunia.com/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the
security and reliability of software in general:

http://corporate.secunia.com/secunia_research/33/

Secunia regularly hires new skilled team members. Check the URL below to
see currently vacant positions:

http://secunia.com/secunia_vacancies/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/secunia_security_advisories/

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10) Verification

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-62/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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