New Windows XP Zero-Day Under Attack
wiredmikey writes "A new Windows kernel zero-day vulnerability is being exploited in targeted attacks against Windows XP users. Microsoft confirmed the issue and published a security advisory to acknowledge the flaw after anti-malware vendor FireEye warned that the Windows bug is being used in conjunction with an Adobe Reader exploit to infect Windows machines with malware. Microsoft described the issue as an elevation of privilege vulnerability that allows an attacker to run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full administrative rights."
Adobe Reader - problem solved
Remember kids, use a free software PDF reader.
I don't know if you're joking, I suspect you are, but for the benefit of the following readers I'll explain.
Here's how it works. User is tricked into accessing an infected pdf which contains code to elevate the user's privileges. the infected document's code downloads further exploits to root-kit the box. Right now the exploit is in a pdf, but infected websites are sure to follow.
If it's out there, and it has a picture of a puppy (or, in the USA, the word "free"), some user will click on it.
If you read the TFA, then you know it also is a Server 2003 bug as well.
Privilege elevation exploits are a nightmare for Terminal Server and Citrix boxes because it is a conduit for installing tools (using the admin rights) to grab other users' credentials and to continue from there to own the entire environment.
Did the submitter RTFA, or just submit as soon as (s)he saw the words "XP exploit" somewhere?
It's not mentioned, in the Slashdot article, but it's also a Server 2003 bug.
https://technet.microsoft.com/en-us/security/advisory/2914486
This means Server 2003 Terminal Servers and Citrix boxes.