CVE-2020-1049 Cross-site scripting in Dynamics 365 Server, version 9.0 (on-premises)
An attacker can execute arbitrary scripts in the context of a Microsoft Dynamics 365 on-premises server via a crafted web request.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-1049?
CVE-2020-1049 is a medium-severity cross-site scripting vulnerability in Microsoft Dynamics 365 Server, version 9.0 (on-premises), published on 15 Apr 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A cross site scripting vulnerability exists when Microsoft Dynamics 365 (on-premises) does not properly sanitize a specially crafted web request to an affected Dynamics server, aka 'Microsoft Dynamics 365 (On-Premise) Cross Site Scripting Vulnerability'. This CVE ID is unique from CVE-2020-1050.
Weakness: CWE-79
Which versions are affected by CVE-2020-1049?
It affects 1 product.
Products include Microsoft Dynamics 365 Server.
How do I fix CVE-2020-1049?
No fix has been published for CVE-2020-1049 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2020-1049 being exploited?
There is no known exploitation of CVE-2020-1049 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Dynamics 365 Server, version 9.0 (on-premises)
Sources
Also known as GHSA-5h5f-c5gc-7x43.