Last night we noticed a Windows XP kernel 0day claim in win32k!NtUserConsoleControl posted on baidu.com.
We took a quick look and found that the issue requires administrator privileges to execute. We are still investigating, looking for any chance of privilege escalation but so far it looks like a reliability issue, not a security vulnerability.
And remember, the Administrator to SYSTEM “escalation” is not a security boundary we defend – it is impossible to defend Windows from an administrator armed with a malicious EXE. In the end, you’ve got to trust your administrators. (see Immutable Law of Security #6)
Just wanted to write a quick note to prevent you all from worrying about this one.
- Jonathan Ness, MSRC Engineering
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