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TITLE:
CA BrightStor ARCserve Backup MEDIASVR.EXE RPC Request Code Execution

SECUNIA ADVISORY ID:
SA24682

VERIFY ADVISORY:
http://secunia.com/advisories/24682/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From local network

SOFTWARE:
BrightStor ARCserve Backup 11.x (for Windows)
http://secunia.com/product/3099/
BrightStor ARCserve Backup 11.x
http://secunia.com/product/312/
BrightStor ARCserve Backup 11.x (for Microsoft SQL Server)
http://secunia.com/product/8144/

DESCRIPTION:
M. Shirk has discovered a vulnerability in BrightStor ARCserve
Backup, which can be exploited by malicious people to compromise a
vulnerable system.

The vulnerability is caused due to an input validation error within
mediasvr.exe when processing 0xBF RPC requests . This can be
exploited to execute arbitrary code via a specially crafted 0xBF RPC
request sent to the mediasvr.exe process.

The vulnerability is confirmed in version r11.5 SP2 build 4237. Other
versions may also be affected.

SOLUTION:
Restrict access to the mediasvr.exe process.

PROVIDED AND/OR DISCOVERED BY:
M. Shirk

ORIGINAL ADVISORY:
http://www.shirkdog.us/shk-004.html

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
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use those supplied by the vendor.

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