CVE-2019-0817 Cross-site scripting in Microsoft Exchange Server
Attackers can spoof content in Outlook Web Access due to improper request handling, potentially deceiving users.
- 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-2019-0817?
CVE-2019-0817 is a medium-severity cross-site scripting vulnerability in Microsoft Exchange Server, published on 9 Apr 2019. 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 spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0858.
Weakness: CWE-19
Which versions are affected by CVE-2019-0817?
It affects 1 product.
Products include Microsoft Exchange Server.
How do I fix CVE-2019-0817?
No fix has been published for CVE-2019-0817 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-2019-0817 being exploited?
There is no known exploitation of CVE-2019-0817 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Exchange Server
- CVE-2024-21410 Microsoft Exchange Server Privilege Escalation
- CVE-2021-34473 Microsoft Exchange Server Remote Code Execution
- CVE-2021-26855 Microsoft Exchange Server Remote Code Execution
- CVE-2021-34523 Microsoft Exchange Server Privilege Escalation
- CVE-2023-21529 Microsoft Exchange Server Deserialization of Untrusted Data
Sources
Also known as GHSA-85h3-h3xc-gj4h.