CVE-2020-11711 Cross-site scripting in n/a
Authenticated stored XSS in Stormshield SNS admin panel allows attackers to steal SSL VPN credentials via malicious disclaimer files.
- 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-2020-11711?
CVE-2020-11711 is a medium-severity cross-site scripting vulnerability in n/a, published on 25 Aug 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
An issue was discovered in Stormshield SNS 3.8.0. Authenticated Stored XSS in the admin login panel leads to SSL VPN credential theft. A malicious disclaimer file can be uploaded from the admin panel. The resulting file is rendered on the authentication interface of the admin panel. It is possible to inject malicious HTML content in order to execute JavaScript inside a victim's browser. This results in a stored XSS on the authentication interface of the admin panel. Moreover, an unsecured authentication form is present on the authentication interface of the SSL VPN captive portal. Users are allowed to save their credentials inside the browser. If an administrator saves his credentials through this unsecured form, these credentials could be stolen via the stored XSS on the admin panel without user interaction. Another possible exploitation would be modification of the authentication form of the admin panel into a malicious form.
Weakness: CWE-79
Which versions are affected by CVE-2020-11711?
It affects 1 product.
Products include Stormshield Stormshield Network Security.
How do I fix CVE-2020-11711?
No fix has been published for CVE-2020-11711 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-2020-11711 being exploited?
There is no known exploitation of CVE-2020-11711 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-v87h-6qr6-59fx.