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Vulnerability of Junos OS: Cross Site Scripting via J-Web

Synthesis of the vulnerability 

An attacker can trigger a Cross Site Scripting via J-Web of Junos OS, in order to run JavaScript code in the context of the web site.
Vulnerable systems: Juniper EX-Series, Juniper J-Series, Junos OS, MX-Series, SRX-Series.
Severity of this threat: 2/4.
Creation date: 09/01/2020.
Références of this weakness: CERTFR-2020-AVI-015, CVE-2020-1607, JSA10986, VIGILANCE-VUL-31280.

Description of the vulnerability 

The Junos OS product offers a web service.

However, it does not filter received data via J-Web before inserting them in generated HTML documents.

An attacker can therefore trigger a Cross Site Scripting via J-Web of Junos OS, in order to run JavaScript code in the context of the web site.
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This cybersecurity weakness impacts software or systems such as Juniper EX-Series, Juniper J-Series, Junos OS, MX-Series, SRX-Series.

Our Vigil@nce team determined that the severity of this security vulnerability is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this vulnerability bulletin.

Solutions for this threat 

Junos OS: fixed versions for J-Web.
Fixed versions are indicated in information sources.
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