CVE-2018-16793 Server-side request forgery in n/a
An attacker can exploit an SSRF vulnerability in the Exchange Server OWA login page to access internal resources or bypass security controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-16793?
CVE-2018-16793 is a high-severity server-side request forgery vulnerability in Microsoft Exchange Server, published on 21 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Rollup 18 for Microsoft Exchange Server 2010 SP3 and previous versions has an SSRF vulnerability via the username parameter in /owa/auth/logon.aspx in the OWA (Outlook Web Access) login page.
Weakness: CWE-918
Which versions are affected by CVE-2018-16793?
It affects 1 product.
Products include Microsoft Exchange Server.
How do I fix CVE-2018-16793?
No fix has been published for CVE-2018-16793 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2018-16793 being exploited?
There is no known exploitation of CVE-2018-16793 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-rghf-wr3j-2757.