CVE-2017-8839 Cross-site scripting in n/a

Medium 6.1 Published 5 Jun 2017 Updated 5 Aug 2024

Cross-site scripting vulnerability in Peplink Balance routers allows attackers to inject malicious scripts via the orig_url parameter in the guest preview interface.

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-2017-8839?

CVE-2017-8839 is a medium-severity cross-site scripting vulnerability in n/a, published on 5 Jun 2017. 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

XSS via orig_url exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before fw-b305hw2_380hw6_580hw2_710hw3_1350hw2_2500-7.0.1-build2093. The affected script is guest/preview.cgi.

Weakness: CWE-79

Which versions are affected by CVE-2017-8839?

It affects 6 products.

Products include Peplink 1350hw2 Firmware, Peplink 2500 Firmware, Peplink 380hw6 Firmware, Peplink 580hw2 Firmware, Peplink 710hw3 Firmware, Peplink B305hw2 Firmware.

How do I fix CVE-2017-8839?

No fix has been published for CVE-2017-8839 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-2017-8839 being exploited?

There is no known exploitation of CVE-2017-8839 in the wild and no public exploit code.

Public exploit code: 3 Exploit-DB entries.

Sources

Also known as GHSA-qrf5-g9cq-r2h6.