Date Discovered April 10, 2007
Description Microsoft Windows CSRSS (client/server run-time subsystem) MsgBox is prone to a remote code-execution vulnerability.
An attacker can exploit this issue to execute arbitrary code with SYSTEM-level privileges.
Note that this issue can also be exploited locally by an authenticated user to gain elevated privileges.
Under default settings, Windows Vista is not prone to remote attacks that attempt to exploit this issue.
Update: This issue was originally disclosed as part of BID 21688, but has now been assigned its own record.
Permit local access for trusted individuals only. Where possible, use restricted environments and restricted shells. Permitting local access to trusted individuals only can reduce the likelihood of local attacks.
Do not follow links provided by unknown or untrusted sources. Users should not follow links or open webpage files provided by untrusted or unknown sources.
Set web browser security to disable the execution of script code or active content.
Because this issue can be exploited via the web, disabling support for scripts and active content may complicate or eliminate potential attacks.
Microsoft has released an advisory and fixes to address this issue. Please see the references for more information.
HP Storage Management Appliance is affected by the issue -- please see the referenced HP advisory.
Credits Tim Garret of Determina Security Research is credited with the discovery of this issue.
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