Vulnerability 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
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Leostream | Connection Broker | >= 8.2.15, <= 8.2.73 |
Related Weaknesses (CWE)
References
- https://adepts.of0x.cc/leostream-xss-to-rce/ExploitThird Party Advisory
- https://www.leostream.com/resources/product-lifecycle/Release NotesVendor Advisory
- https://adepts.of0x.cc/leostream-xss-to-rce/ExploitThird Party Advisory
- https://www.leostream.com/resources/product-lifecycle/Release NotesVendor Advisory
FAQ
What is CVE-2020-26574?
CVE-2020-26574 is a vulnerability with a CVSS score of 9.6 (CRITICAL). 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 t...
How severe is CVE-2020-26574?
CVE-2020-26574 has been rated CRITICAL with a CVSS base score of 9.6/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2020-26574?
Check the references section above for vendor advisories and patch information. Affected products include: Leostream Connection Broker.