CVE-2016-0034 Microsoft Silverlight Runtime Remote Code Execution

Exploited in the wild High 8.8 Published Updated

Remote attackers can execute arbitrary code or cause denial of service via crafted websites due to improper handling of negative offsets in Silverlight.

Exploited in the wild
Since 25 May 2022
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2016-0034?

CVE-2016-0034 is a high-severity memory corruption vulnerability in n/a, published on 13 Jan 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding, which allows remote attackers to execute arbitrary code or cause a denial of service (object-header corruption) via a crafted web site, aka "Silverlight Runtime Remote Code Execution Vulnerability."

Which versions are affected by CVE-2016-0034?

It affects 1 product.

Products include Microsoft Silverlight.

How do I fix CVE-2016-0034?

No fix has been published for CVE-2016-0034 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 15 Jun 2022.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2016-0034 being exploited?

Yes. Attackers have exploited CVE-2016-0034 in the wild since at least 25 May 2022, including in ransomware campaigns.

Sources

Also known as GHSA-8wh9-64cq-2gj5.

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