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TITLE:
Advantech WebAccess Network Service Component Code Execution
Vulnerability

SECUNIA ADVISORY ID:
SA43877

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/43877/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=43877

RELEASE DATE:
2011-03-24

DISCUSS ADVISORY:
http://secunia.com/advisories/43877/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/43877/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=43877

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Ruben Santamarta has discovered a vulnerability in Advantech
WebAccess, which can be exploited by malicious people to compromise a
vulnerable system.

The vulnerability is caused due to an error in the WebAccess Network
Service (webvrpcs.exe) when processing certain RPC calls. This can be
exploited to manipulate certain function pointers and execute
arbitrary code by sending specially crafted RPC requests to TCP port
4592.

The vulnerability is confirmed in version 7.0-2010.05.06. Other
versions may also be affected.

SOLUTION:
Restrict access to trusted hosts only (e.g. via network access
control lists).

PROVIDED AND/OR DISCOVERED BY:
Ruben Santamarta

ORIGINAL ADVISORY:
http://www.reversemode.com/index.php?option=com_content&task=view&id=72&Itemid=1

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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

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