CVE-2022-21948 paste: XSS on the image upload function
Remote attackers can execute JavaScript via malicious SVG uploads in openSUSE paste, potentially compromising user sessions.
- 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-2022-21948?
CVE-2022-21948 is a medium-severity cross-site scripting vulnerability in openSUSE paste, published on 7 Feb 2023. 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
An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in paste allows remote attackers to place Javascript into SVG files. This issue affects: openSUSE paste paste version b57b9f87e303a3db9465776e657378e96845493b and prior versions.
Weakness: CWE-79
Which versions are affected by CVE-2022-21948?
It affects 1 product.
Products include Opensuse Paste.
How do I fix CVE-2022-21948?
No fix has been published for CVE-2022-21948 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-2022-21948 being exploited?
There is no known exploitation of CVE-2022-21948 in the wild and no public exploit code.
Sources
Also known as GHSA-v8jx-vx6h-6c48.