Defense-in-depth

Internet Explorer Mitigations for ATL Data Stream Vulnerabilities

IE security update MS09-034 implements two defense-in-depth measures intended to mitigate the threat of attacks which attempt to exploit the Microsoft Active Template Library (ATL) vulnerabilities described in Security Advisory 973882 and MS09-034. We would like to explain these mitigations in more detail. ATL persisted data checks The first mitigation is a change to modify …

Internet Explorer Mitigations for ATL Data Stream Vulnerabilities Read More »

Understanding DEP as a mitigation technology part 2

In our previous blog post, we explained how DEP works and how to determine if / how a process opted-in to DEP. Now we will demonstrate how DEP can be used to mitigate the risk of a real-world attack. We published a security advisory in February describing an Excel vulnerability in fully-patched Excel being used …

Understanding DEP as a mitigation technology part 2 Read More »

A Brussels retrospective from Oahu

Handle:Security Blanki IRL: Sarah Blankinship Rank: Senior Security Strategist Lead Likes: Vuln wrangling, teams of rivals, global climate change – the hotter the better Dislikes: Slack jawed gawkers (girls are geeks too!), customers @ risk, egos Aloha from the Shakacon III, a security conference held each year in lovely Honolulu, Hawaii! Although I’m currently in …

A Brussels retrospective from Oahu Read More »

MS09-019 (CVE-2009-1140): Benefits of IE Protected Mode, additional Network Protocol Lockdown workaround

Benefits of IE Protected Mode One of the vulnerabilities addressed in MS09-019, CVE-2009-1140, involves navigating to a local file via a UNC path, ex: \\127.0.0.1\c$. This roundabout way of navigating to a file is necessary to execute local content such that it runs in the Internet Explorer Internet zone, where scripting is enabled. As it …

MS09-019 (CVE-2009-1140): Benefits of IE Protected Mode, additional Network Protocol Lockdown workaround Read More »

Capt I.M. Hardened OS-Microsoft

Handle: Cap’n Steve IRL: Steve Adegbite Rank: Senior Security Program Manager Lead Likes: Reverse Engineering an obscene amount of code and ripping it up on a snowboard Dislikes: Not much but if you hear me growl…run Hey, Steve here. Just finally settling back in after traveling a bit, meeting up with different parts of the …

Capt I.M. Hardened OS-Microsoft Read More »

MS09-014: Addressing the Safari Carpet Bomb vulnerability

Following up on Security Advisory 953818, today we released MS09-014, rated as Moderate, which addresses aspects of the Safari Carpet Bomb vulnerability. On a Windows operating system this vulnerability allows an attacker, through Safari, to drop arbitrary files on a user’s desktop. As of Safari 3.1.2 Apple has removed this behavior from Safari. Why is …

MS09-014: Addressing the Safari Carpet Bomb vulnerability Read More »