Juniper ScreenOS is prone to multiple HTML-injection vulnerabilities.
Successful exploits will allow attacker-supplied HTML and script code to run in the context of the affected browser, potentially allowing the attacker to steal cookie-based authentication credentials or control how the site is rendered to the user. Other attacks are also possible.
Information
CVE-2017-2336
CVE-2017-2337
CVE-2017-2338
CVE-2017-2339
Juniper screenos 6.3.0r21
Juniper screenos 6.3.0r20
Juniper screenos 6.3.0r19
Juniper screenos 6.3.0R13
Juniper screenos 6.3.0R12
Exploit
Attackers can exploit these issues using browser.
References: