https://arstechnica.com/information-technology/2020/04/4-windows-0days-under-active-exploit-get-fixes-in-this-months-update-tuesday/
By Dan Goodin
Ars Technica
4/14/2020
Microsoft has patched four actively exploited vulnerabilities that allow
attackers to execute malicious code or elevate system privileges on devices
that run Windows.
Two of the security flaws—tracked as CVE-2020-1020 and CVE-2020-0938—reside in
the Adobe Type Manager Library, a Windows DLL file that a wide variety of apps
use to manage and render fonts available from Adobe Systems. On supported
operating systems other than Windows 10, attackers who successfully exploit the
vulnerabilities can remotely execute code. On Windows 10, attackers can run
code inside an AppContainer sandbox. The measure limits the system privileges
malicious code has, but even then, attackers can use it to create accounts with
full user rights, install programs, and view, change, or delete data.
Attackers can exploit the flaws by convincing a target to open a booby-trapped
document or viewing it in the Windows preview pane. Tuesday’s advisories said
that Microsoft is “aware of limited, targeted attacks that attempt to leverage”
both vulnerabilities. Microsoft revealed last month that one of the bugs was
being exploited in limited attacks against Windows 7 machines.
While installing the newly available patches is the best way to protect
vulnerable systems, temporary workarounds for those who need to buy more time
include:
[...]
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