CVE-2020-18723 Cross-site scripting in n/a
Stored XSS in MDaemon webmail allows attackers to execute code on email recipients' browsers via malicious file attachments.
- 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-2020-18723?
CVE-2020-18723 is a medium-severity cross-site scripting vulnerability in n/a, published on 3 Feb 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Stored cross-site scripting (XSS) in file attachment field in MDaemon webmail 19.5.5 allows an attacker to execute code on the email recipient side while forwarding an email to perform potentially malicious activities.
Weakness: CWE-79
Which versions are affected by CVE-2020-18723?
It affects 1 product.
Products include Altn Mdaemon Webmail.
How do I fix CVE-2020-18723?
No fix has been published for CVE-2020-18723 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-2020-18723 being exploited?
There is no known exploitation of CVE-2020-18723 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in n/a
Sources
Also known as GHSA-7c3h-wh3g-298c.