CVE-2018-1000813 Cross-site scripting in n/a
An attacker can execute arbitrary JavaScript in the context of a logged-in user's session via malicious class names in Backdrop CMS blocks and layouts.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2018-1000813?
CVE-2018-1000813 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Dec 2018. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Backdrop CMS version 1.11.0 and earlier contains a Cross Site Scripting (XSS) vulnerability in Sanitization of custom class names used on blocks and layouts. that can result in Execution of JavaScript from an unexpected source.. This attack appear to be exploitable via A user must be directed to an affected page while logged in.. This vulnerability appears to have been fixed in 1.11.1 and later.
Weakness: CWE-79
Which versions are affected by CVE-2018-1000813?
It affects 1 product.
Products include Backdropcms Backdrop Cms.
How do I fix CVE-2018-1000813?
No fix has been published for CVE-2018-1000813 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-2018-1000813 being exploited?
There is no known exploitation of CVE-2018-1000813 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-8wm7-hhmh-8mwj.