CVE-2021-45085 Cross-site scripting in n/a
An attacker can execute arbitrary scripts in the GNOME Web browser by tricking users into visiting malicious pages that appear in the Most Visited list.
- 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
- Available
What is CVE-2021-45085?
CVE-2021-45085 is a medium-severity cross-site scripting vulnerability in Debian Debian Linux, published on 16 Dec 2021. 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
XSS can occur in GNOME Web (aka Epiphany) before 40.4 and 41.x before 41.1 via an about: page, as demonstrated by ephy-about:overview when a user visits an XSS payload page often enough to place that page on the Most Visited list.
Weakness: CWE-79
Which versions are affected by CVE-2021-45085?
It affects 2 products.
Products include Debian Debian Linux, Gnome Epiphany.
How do I fix CVE-2021-45085?
Upgrade to a fixed version.
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-2021-45085 being exploited?
There is no known exploitation of CVE-2021-45085 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2021-45085, GHSA-w4w9-rwjc-mvgm, UBUNTU-CVE-2021-45085.