CVE-2020-26574
Leostream Connection Broker 8.2.x is affected by stored XSS.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.12%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 9.6 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- EPSS
- 2.12% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- leostream/connection broker
- Source
- cve@mitre.org
References
- https://adepts.of0x.cc/leostream-xss-to-rce/Exploit, Third Party Advisory
- https://www.leostream.com/resources/product-lifecycle/Release Notes, Vendor Advisory
- https://adepts.of0x.cc/leostream-xss-to-rce/Exploit, Third Party Advisory
- https://www.leostream.com/resources/product-lifecycle/Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.