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Q1 Factsheets released:

http://secunia.com/resources/factsheets/2011_vendor/


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TITLE:
Moonlight Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA44002

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44002/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44002

RELEASE DATE:
2011-04-08

DISCUSS ADVISORY:
http://secunia.com/advisories/44002/#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/44002/

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=44002

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:
Some vulnerabilities have been reported in Moonlight, which can be
exploited by malicious people to disclose potentially sensitive
information, bypass certain security features, and potentially
compromise a user's system.

1) The "RuntimeHelpers.InitializeArray" implementation does not
properly restrict the modification of read-only values, which can be
exploited to e.g. crash plugins or corrupt the state of the security
manager and bypass the Moonlight's sandboxing limitations.

2) A race condition within the implementation of the Array.Copy
"FastCopy" call can be exploited to e.g. crash plugins or corrupt the
state of the security manager and bypass the Moonlight's sandboxing
limitations by modifying read-only values.

3) An error within Moonlight's "DynamicMethod resurrection"
implementation can be exploited to trigger a use-after-free
condition.

4) An error when freeing unmanaged MonoThread instances can be
exploited to e.g. disclose potentially sensitive information.

The vulnerabilities are reported in Moonlight 2.x prior to version
2.4.1.

SOLUTION:
Update to Moonlight 2.4.1.

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

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Jeroen Frijters.

ORIGINAL ADVISORY:
http://www.mono-project.com/Vulnerabilities#Moonlight_RuntimeHelpers.InitializeArray_on_non-primitive_value_types
http://www.mono-project.com/Vulnerabilities#Moonlight_Race_in_Array.Copy_.22FastCopy.22_Internal_Call
http://www.mono-project.com/Vulnerabilities#Moonlight_DynamicMethod_Resurrection
http://www.mono-project.com/Vulnerabilities#Moonlight_Improper_Thread_Finalization

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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