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TITLE:
Mono ASP.NET "enableViewStateMac" Configuration Handling Weakness

SECUNIA ADVISORY ID:
SA40572

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/40572/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40572

RELEASE DATE:
2010-07-14

DISCUSS ADVISORY:
http://secunia.com/advisories/40572/#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/40572/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
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https://ca.secunia.com/?page=viewadvisory&vuln_id=40572

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

http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
A weakness has been reported in Mono, which can be exploited by
malicious people to conduct cross-site scripting attacks.

The weakness is caused due to certain configuration directives not
properly setting the "enableViewStateMac" setting to "TRUE".

For more information:
SA40556

SOLUTION:
Fixed in the SVN repository.

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

PROVIDED AND/OR DISCOVERED BY:
Web Security Research Group (WSRG) of Hewlett Packard (HP).

ORIGINAL ADVISORY:
Mono:
http://www.mono-project.com/Vulnerabilities#ASP.NET_View_State_Cross-Site_Scripting

HP:
http://h30507.www3.hp.com/t5/The-HP-Security-Laboratory-Blog/ASP-NET-Cross-Site-Scripting-Followup-Mono/ba-p/33240

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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