CVE-2018-8311 Code injection in Microsoft Lync

High 8.8 Published Updated

Attackers can execute arbitrary code remotely by sending specially crafted content to Skype for Business or Lync clients.

Exploited in the wild
Not known
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-2018-8311?

CVE-2018-8311 is a high-severity code injection vulnerability in Microsoft Lync, published on 11 Jul 2018. 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

A remote code execution vulnerability exists when Skype for Business and Microsoft Lync clients fail to properly sanitize specially crafted content, aka "Remote Code Execution Vulnerability in Skype For Business and Lync." This affects Skype, Microsoft Lync.

Weakness: CWE-20

Which versions are affected by CVE-2018-8311?

It affects 2 products.

Products include Microsoft Lync, Microsoft Skype for Business.

How do I fix CVE-2018-8311?

No fix has been published for CVE-2018-8311 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2018-8311 being exploited?

There is no known exploitation of CVE-2018-8311 in the wild and no public exploit code.

Sources

Also known as GHSA-v5v7-qp5p-hxjg.

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