CVE-2020-17085 Microsoft Exchange Server Denial of Service Vulnerability

Medium 6.2 Published Updated

Attackers can cause a denial of service in Microsoft Exchange Server, requiring administrators to apply security patches.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-17085?

CVE-2020-17085 is a medium-severity denial of service vulnerability in Microsoft Exchange Server, published on 11 Nov 2020. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Microsoft Exchange Server Denial of Service Vulnerability

Which versions are affected by CVE-2020-17085?

It affects 1 product.

Products include Microsoft Exchange Server.

How do I fix CVE-2020-17085?

No fix has been published for CVE-2020-17085 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-17085 being exploited?

There is no known exploitation of CVE-2020-17085 in the wild and no public exploit code.

All Microsoft Exchange Server vulnerabilities

Sources

Also known as GHSA-mj56-6jxg-8vw7.

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