In all 21 browser-related fixes were rolled out by Microsoft, 14 of which are rated critical and the remaining seven ranked important. Of the bugs, “scripting engine memory corruption vulnerabilities” represented 14 of the flaws.
The browser scripting issue allowed attackers to launch 3rd party arbitrary code which can cause computers to get corrupted. It will also be a way for attackers to obtain info, according to Microsoft.
“The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user,” Microsoft wrote. “An attacker who successfully exploited the vulnerability could gain the same user rights as the current user.”
“Worse, if a user is logged into a system as an administrator, an attacker could take control of an affected system and install programs, view folder contents and change, or delete data”
The kernel also got attention from the spectre and the meltdown flaws in Intel CPU’s.
“The Windows kernel received a lot of attention this month likely due to the ongoing attention on Meltdown and Spectre vulnerabilities. I stopped counting the CVEs after a dozen. Good news is I did not see anything higher than an important rating, but that is a lot of changes in the kernel”
said Chris Goettl, director of product management, security, for Ivanti.