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.
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
| Link | Tags |
|---|---|
| https://bugzilla.novell.com/show_bug.cgi?id=667077 | patch |
| http://www.securityfocus.com/bid/47208 | vdb entry |
| http://openwall.com/lists/oss-security/2011/04/06/14 | mailing list patch |
| http://secunia.com/advisories/44002 | third party advisory vendor advisory |
| http://www.mono-project.com/Vulnerabilities | |
| http://secunia.com/advisories/44076 | third party advisory vendor advisory |
| https://github.com/mono/mono/commit/2f00e4bbb2137130845afb1b2a1e678552fc8e5c | patch |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/66625 | vdb entry |
| http://lists.opensuse.org/opensuse-updates/2011-04/msg00024.html | mailing list |
| http://www.vupen.com/english/advisories/2011/0904 | vdb entry vendor advisory |