Momo Moonlight Array.Copy security bypass

momo-arraycopy-security-bypass (66625) The risk level is classified as MediumMedium Risk

Description:

Momo Moonlight could allow a remote attacker to bypass security restrictions, caused by a race condition in the internal call implementing a fast-copy optimization for Array. A remote attacker could exploit this vulnerability via untrusted code to crash plugins or corrupt Moonlight's security manager internal state.

*CVSS:

Base Score: 5.8
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 4.3
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Bypass Security

Remedy:

Upgrade to the latest version of Momo Moonlight (2.4.1, 3.99.3 or later), available from the Momo Web site. See References.

References:

  • momo Web Site: momo Known vulnerabilities .
  • BID-47208: Moonlight Prior to 2.4.1/3.99.3 Multiple Security Vulnerabilities
  • CVE-2011-0990: Race condition in the FastCopy optimization in the Array.Copy method in metadata/icall.c in Mono, when Moonlight 2.x before 2.4.1 or 3.x before 3.99.3 is used, allows remote attackers to trigger a buffer overflow and modify internal data structures, and cause a denial of service (plugin crash) or corrupt the internal state of the security manager, via a crafted media file in which a thread makes a change after a type check but before a copy action.
  • OSVDB ID: 75027: Mono on Moonlight metadata/icall.c Array.Copy Method FastCopy Race Condition Media File Handling Remote Overflow
  • SA44002: Moonlight Multiple Vulnerabilities
  • SUSE-SR:2011:007: SUSE Security Summary Report

Platforms Affected:

  • Momo Moonlight 2.4
  • Momo Moonlight 3.99

Reported:

Mar 06, 2011

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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