CVE-2020-26574 Cross-site scripting in n/a
Unauthenticated attackers can inject JavaScript via User-Agent headers, leading to admin session hijacking and root code execution in unsupported Leostream Connection Broker versions.
- 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-2020-26574?
CVE-2020-26574 is a critical cross-site scripting vulnerability in n/a, published on 6 Oct 2020. 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
Leostream Connection Broker 8.2.x is affected by stored XSS. An unauthenticated attacker can inject arbitrary JavaScript code via the webquery.pl User-Agent HTTP header. It is rendered by the admins the next time they log in. The JavaScript injected can be used to force the admin to upload a malicious Perl script that will be executed as root via libMisc::browser_client. NOTE: This vulnerability only affects products that are no longer supported by the maintainer
Weakness: CWE-79
Which versions are affected by CVE-2020-26574?
It affects 1 product.
Products include Leostream Connection Broker.
How do I fix CVE-2020-26574?
No fix has been published for CVE-2020-26574 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-2020-26574 being exploited?
There is no known exploitation of CVE-2020-26574 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-fgqf-9xqq-px3h.